Esempio di configurazione di IKEv1/IKEv2 tra Cisco IOS e strongSwan
Sommario
Introduzione
Questo documento offre un esempio di configurazione di una VPN da LAN a LAN (L2L) tra Cisco IOS® e strongSwan. Vengono presentate entrambe le configurazioni IKEv1 (Internet Key Exchange versione 1) e IKEv2 (Internet Key Exchange versione 2).
Prerequisiti
Requisiti
Cisco raccomanda la conoscenza dei seguenti argomenti:
- Conoscenze base delle configurazioni Linux
- Conoscenze delle configurazioni VPN su Cisco IOS
- Informazioni sui protocolli:
- IKEv1
- IKEv2
- IPSec (Internet Protocol Security)
Componenti usati
Le informazioni di questo documento si basano sulle seguenti versioni software:
- Cisco IOS release 15.3T
- strongSwan 5.0.4
- Linux kernel 3.2.12
Configurazione
Esempio di rete
La topologia è la stessa per entrambi gli esempi, ossia un tunnel L2L tra Cisco IOS e strongSwan.
Il traffico è protetto tra 192.168.1.0/24<->192.168.2.0/24.
VPN IPSec L2L open-source
Esistono diversi progetti Open Source che utilizzano i protocolli IKE (Internet Key Exchange) e IPSec per creare tunnel L2L sicuri:
Free Secure Wide-Area Networking (freeS/WAN): storia, non attivamente mantenuta
strumenti ipsec: racoon - non supporta IKEv2, kernel Linux precedenti 2.6
Openswan Supporto IKEv2 di base, kernel Linux 2.6 e API precedenti non gestiti attivamente
cigno forte: supporta le estensioni IKEv2 e EAP/mobility, i nuovi kernel Linux 3.x e versioni successive che utilizzano l'API NETKEY (il nome dell'implementazione IPSec nativa nel kernel 2.6 e versioni successive), attivamente gestita e ben documentata
Attualmente, la scelta migliore è solitamente strongSwan. È simile nella configurazione a Openswan ma ci sono diverse differenze minori. La presente guida si concentra su strongSwan e sulla configurazione di Cisco IOS.
IKEv1 tra Cisco IOS e strongSwan
Configurazione di Cisco IOS
crypto isakmp policy 10
encr aes
authentication pre-share
group 5
crypto isakmp key cisco address 172.16.10.2
crypto ipsec transform-set TS esp-aes esp-sha-hmac
mode tunnel
crypto map cmap 10 ipsec-isakmp
set peer 172.16.10.2
set transform-set TS
match address cryptoacl
interface Ethernet0/1
ip address 192.168.1.1 255.255.255.0
interface Ethernet0/0
ip address 172.16.10.1 255.255.255.0
crypto map cmap
ip access-list extended cryptoacl
permit ip 192.168.1.0 0.0.0.255 192.168.2.0 0.0.0.255
Configurazione strongSwan
Il lato sinistro è relativo a strongSwan e il lato destro è remoto (Cisco IOS in questo esempio).
/etc/ipsec.conf
config setup
# strictcrlpolicy=yes
# uniqueids = no
conn %default
ikelifetime=1440m
keylife=60m
rekeymargin=3m
keyingtries=1
keyexchange=ikev1
authby=secret
conn ciscoios
left=172.16.10.2 #strongswan outside address
leftsubnet=192.168.2.0/24 #network behind strongswan
leftid=172.16.10.2 #IKEID sent by strongswan
leftfirewall=yes
right=172.16.10.1 #IOS outside address
rightsubnet=192.168.1.0/24 #network behind IOS
rightid=172.16.10.1 #IKEID sent by IOS
auto=add
ike=aes128-md5-modp1536 #P1: modp1536 = DH group 5
esp=aes128-sha1 #P2
Per impostazione predefinita, Cisco IOS utilizza l'indirizzo come ID IKE, ovvero gli indirizzi sono stati utilizzati come 'rightid' e "leftid". strongSwan, come Cisco IOS, supporta la crittografia di nuova generazione (Suite B), pertanto è possibile utilizzare le chiavi Diffie-Hellman (DH) 4096 insieme a AES256 e SHA512.
Per il parametro auto è stato utilizzato l'argomento "add". Questo fa salire in aria il tunnel dopo che riceve traffico interessante. Per avviarlo immediatamente, è possibile utilizzare l'argomento "start".
/etc/ipsec.secrets
172.16.10.2 172.16.10.1 : PSK cisco
Per IKEv1 entrambi i tasti devono essere uguali, in questo esempio "cisco".
IKEv2 tra Cisco IOS e strongSwan
Configurazione di Cisco IOS
crypto ikev2 proposal ikev2proposal
encryption aes-cbc-128
integrity sha1
group 5
crypto ikev2 policy ikev2policy
match fvrf any
proposal ikev2proposal
crypto ikev2 keyring keys
peer strongswan
address 172.16.10.2
pre-shared-key local cisco
pre-shared-key remote cisco
crypto ikev2 profile ikev2profile
match identity remote address 172.16.10.2 255.255.255.255
authentication remote pre-share
authentication local pre-share
keyring local keys
crypto ipsec transform-set TS esp-aes esp-sha-hmac
mode tunnel
crypto map cmap 10 ipsec-isakmp
set peer 172.16.10.2
set transform-set TS
set ikev2-profile ikev2profile
match address cryptoacl
interface Ethernet0/1
ip address 192.168.1.1 255.255.255.0
interface Ethernet0/0
ip address 172.16.10.1 255.255.255.0
crypto map cmap
ip access-list extended cryptoacl
permit ip 192.168.1.0 0.0.0.255 192.168.2.0 0.0.0.255
Configurazione strongSwan
Rispetto a IKEv1 sono state apportate solo due modifiche: keyexchange ed eventualmente chiavi.
/etc/ipsec.conf
config setup
# strictcrlpolicy=yes
# uniqueids = no
conn %default
ikelifetime=1440m
keylife=60m
rekeymargin=3m
keyingtries=1
keyexchange=ikev1
authby=secret
conn ciscoios
left=172.16.10.2
leftsubnet=192.168.2.0/24
leftid=172.16.10.2
leftfirewall=yes
right=172.16.10.1
rightsubnet=192.168.1.0/24
rightid=172.16.10.1
auto=add
ike=aes128-sha1-modp1536
esp=aes128-sha1
keyexchange=ikev2
/etc/ipsec.secrets
172.16.10.2 : PSK "cisco"
172.16.10.1 : PSK "cisco"
In IKEv2 le chiavi di ogni sito possono essere diverse.
Verifica
Per le procedure di verifica, vedere la sezione Risoluzione dei problemi.
Risoluzione dei problemi
Le informazioni contenute in questa sezione permettono di risolvere i problemi relativi alla configurazione.
IKEv1 tra Cisco IOS e strongSwan
Cisco IOS
R1#ping 192.168.2.1 source e0/1 repeat 1
Definizione del tunnel attivata da Cisco IOS
*May 24 18:02:48.464: IPSEC(sa_request): ,
(key eng. msg.) OUTBOUND local= 172.16.10.1:500, remote= 172.16.10.2:500,
local_proxy= 192.168.1.0/255.255.255.0/256/0,
remote_proxy= 192.168.2.0/255.255.255.0/256/0,
protocol= ESP, transform= esp-aes esp-sha-hmac (Tunnel),
lifedur= 3600s and 4608000kb,
spi= 0x0(0), conn_id= 0, keysize= 128, flags= 0x0
*May 24 18:02:48.465: ISAKMP:(0): SA request profile is (NULL)
*May 24 18:02:48.465: ISAKMP: Created a peer struct for 172.16.10.2, peer port 500
*May 24 18:02:48.465: ISAKMP: New peer created peer = 0xF334E7E0 peer_handle =
0x80000006
*May 24 18:02:48.465: ISAKMP: Locking peer struct 0xF334E7E0, refcount 1 for
isakmp_initiator
*May 24 18:02:48.465: ISAKMP: local port 500, remote port 500
*May 24 18:02:48.465: ISAKMP: set new node 0 to QM_IDLE
*May 24 18:02:48.465: ISAKMP: Find a dup sa in the avl tree during calling
isadb_insert sa = F49C9890
*May 24 18:02:48.465: ISAKMP:(0):Can not start Aggressive mode, trying Main mode.
*May 24 18:02:48.465: ISAKMP:(0):found peer pre-shared key matching 172.16.10.2
*May 24 18:02:48.465: ISAKMP:(0): constructed NAT-T vendor-rfc3947 ID
*May 24 18:02:48.465: ISAKMP:(0): constructed NAT-T vendor-07 ID
*May 24 18:02:48.465: ISAKMP:(0): constructed NAT-T vendor-03 ID
*May 24 18:02:48.465: ISAKMP:(0): constructed NAT-T vendor-02 ID
*May 24 18:02:48.465: ISAKMP:(0):Input = IKE_MESG_FROM_IPSEC, IKE_SA_REQ_MM
*May 24 18:02:48.465: ISAKMP:(0):Old State = IKE_READY New State = IKE_I_MM1
*May 24 18:02:48.465: ISAKMP:(0): beginning Main Mode exchange
*May 24 18:02:48.465: ISAKMP:(0): sending packet to 172.16.10.2 my_port 500
peer_port 500 (I) MM_NO_STATE
*May 24 18:02:48.465: ISAKMP:(0):Sending an IKE IPv4 Packet.
*May 24 18:02:48.466: ISAKMP (0): received packet from 172.16.10.2 dport 500
sport 500 Global (I) MM_NO_STATE
*May 24 18:02:48.466: ISAKMP:(0):Input = IKE_MESG_FROM_PEER, IKE_MM_EXCH
*May 24 18:02:48.466: ISAKMP:(0):Old State = IKE_I_MM1 New State = IKE_I_MM2
*May 24 18:02:48.466: ISAKMP:(0): processing SA payload. message ID = 0
*May 24 18:02:48.466: ISAKMP:(0): processing vendor id payload
*May 24 18:02:48.466: ISAKMP:(0): vendor ID seems Unity/DPD but major 215 mismatch
*May 24 18:02:48.466: ISAKMP:(0): vendor ID is XAUTH
*May 24 18:02:48.466: ISAKMP:(0): processing vendor id payload
*May 24 18:02:48.466: ISAKMP:(0): vendor ID is DPD
*May 24 18:02:48.466: ISAKMP:(0): processing vendor id payload
*May 24 18:02:48.466: ISAKMP:(0): vendor ID seems Unity/DPD but major 69 mismatch
*May 24 18:02:48.466: ISAKMP (0): vendor ID is NAT-T RFC 3947
*May 24 18:02:48.466: ISAKMP:(0):found peer pre-shared key matching 172.16.10.2
*May 24 18:02:48.466: ISAKMP:(0): local preshared key found
*May 24 18:02:48.466: ISAKMP : Scanning profiles for xauth ...
*May 24 18:02:48.466: ISAKMP:(0):Checking ISAKMP transform 1 against priority
10 policy
*May 24 18:02:48.466: ISAKMP: encryption AES-CBC
*May 24 18:02:48.466: ISAKMP: keylength of 128
*May 24 18:02:48.466: ISAKMP: hash SHA
*May 24 18:02:48.466: ISAKMP: default group 5
*May 24 18:02:48.466: ISAKMP: auth pre-share
*May 24 18:02:48.466: ISAKMP: life type in seconds
*May 24 18:02:48.466: ISAKMP: life duration (VPI) of 0x0 0x1 0x51 0x80
*May 24 18:02:48.466: ISAKMP:(0):atts are acceptable. Next payload is 0
*May 24 18:02:48.466: ISAKMP:(0):Acceptable atts:actual life: 0
*May 24 18:02:48.466: ISAKMP:(0):Acceptable atts:life: 0
*May 24 18:02:48.466: ISAKMP:(0):Fill atts in sa vpi_length:4
*May 24 18:02:48.466: ISAKMP:(0):Fill atts in sa life_in_seconds:86400
*May 24 18:02:48.466: ISAKMP:(0):Returning Actual lifetime: 86400
*May 24 18:02:48.466: ISAKMP:(0)::Started lifetime timer: 86400.
*May 24 18:02:48.466: ISAKMP:(0): processing vendor id payload
*May 24 18:02:48.466: ISAKMP:(0): vendor ID seems Unity/DPD but major 215 mismatch
*May 24 18:02:48.466: ISAKMP:(0): vendor ID is XAUTH
*May 24 18:02:48.466: ISAKMP:(0): processing vendor id payload
*May 24 18:02:48.466: ISAKMP:(0): vendor ID is DPD
*May 24 18:02:48.466: ISAKMP:(0): processing vendor id payload
*May 24 18:02:48.466: ISAKMP:(0): vendor ID seems Unity/DPD but major 69 mismatch
*May 24 18:02:48.466: ISAKMP (0): vendor ID is NAT-T RFC 3947
*May 24 18:02:48.466: ISAKMP:(0):Input = IKE_MESG_INTERNAL, IKE_PROCESS_MAIN_MODE
*May 24 18:02:48.466: ISAKMP:(0):Old State = IKE_I_MM2 New State = IKE_I_MM2
*May 24 18:02:48.466: ISAKMP:(0): sending packet to 172.16.10.2 my_port 500
peer_port 500 (I) MM_SA_SETUP
*May 24 18:02:48.466: ISAKMP:(0):Sending an IKE IPv4 Packet.
*May 24 18:02:48.466: ISAKMP:(0):Input = IKE_MESG_INTERNAL, IKE_PROCESS_COMPLETE
*May 24 18:02:48.466: ISAKMP:(0):Old State = IKE_I_MM2 New State = IKE_I_MM3
*May 24 18:02:48.474: ISAKMP (0): received packet from 172.16.10.2 dport 500 sport
500 Global (I) MM_SA_SETUP
*May 24 18:02:48.474: ISAKMP:(0):Input = IKE_MESG_FROM_PEER, IKE_MM_EXCH
*May 24 18:02:48.474: ISAKMP:(0):Old State = IKE_I_MM3 New State = IKE_I_MM4
*May 24 18:02:48.474: ISAKMP:(0): processing KE payload. message ID = 0
*May 24 18:02:48.482: ISAKMP:(0): processing NONCE payload. message ID = 0
*May 24 18:02:48.482: ISAKMP:(0):found peer pre-shared key matching 172.16.10.2
*May 24 18:02:48.482: ISAKMP:received payload type 20
*May 24 18:02:48.482: ISAKMP (1003): His hash no match - this node outside NAT
*May 24 18:02:48.482: ISAKMP:received payload type 20
*May 24 18:02:48.482: ISAKMP (1003): No NAT Found for self or peer
*May 24 18:02:48.482: ISAKMP:(1003):Input = IKE_MESG_INTERNAL, IKE_PROCESS_MAIN_MODE
*May 24 18:02:48.482: ISAKMP:(1003):Old State = IKE_I_MM4 New State = IKE_I_MM4
*May 24 18:02:48.482: ISAKMP:(1003):Send initial contact
*May 24 18:02:48.482: ISAKMP:(1003):SA is doing pre-shared key authentication using
id type ID_IPV4_ADDR
*May 24 18:02:48.482: ISAKMP (1003): ID payload
next-payload : 8
type : 1
address : 172.16.10.1
protocol : 17
port : 500
length : 12
*May 24 18:02:48.482: ISAKMP:(1003):Total payload length: 12
*May 24 18:02:48.482: ISAKMP:(1003): sending packet to 172.16.10.2 my_port 500
peer_port 500 (I) MM_KEY_EXCH
*May 24 18:02:48.482: ISAKMP:(1003):Sending an IKE IPv4 Packet.
*May 24 18:02:48.482: ISAKMP:(1003):Input = IKE_MESG_INTERNAL, IKE_PROCESS_COMPLETE
*May 24 18:02:48.482: ISAKMP:(1003):Old State = IKE_I_MM4 New State = IKE_I_MM5
*May 24 18:02:48.483: ISAKMP (1003): received packet from 172.16.10.2 dport 500
sport 500 Global (I) MM_KEY_EXCH
*May 24 18:02:48.483: ISAKMP:(1003): processing ID payload. message ID = 0
*May 24 18:02:48.483: ISAKMP (1003): ID payload
next-payload : 8
type : 1
address : 172.16.10.2
protocol : 0
port : 0
length : 12
*May 24 18:02:48.483: ISAKMP:(0):: peer matches *none* of the profiles
*May 24 18:02:48.483: ISAKMP:(1003): processing HASH payload. message ID = 0
*May 24 18:02:48.483: ISAKMP:(1003):SA authentication status:
authenticated
*May 24 18:02:48.483: ISAKMP:(1003):SA has been authenticated with 172.16.10.2
*May 24 18:02:48.483: ISAKMP: Trying to insert a peer 172.16.10.1/172.16.10.2/500/,
and inserted successfully F334E7E0.
*May 24 18:02:48.483: ISAKMP:(1003):Input = IKE_MESG_FROM_PEER, IKE_MM_EXCH
*May 24 18:02:48.483: ISAKMP:(1003):Old State = IKE_I_MM5 New State = IKE_I_MM6
*May 24 18:02:48.483: ISAKMP:(1003):Input = IKE_MESG_INTERNAL, IKE_PROCESS_MAIN_MODE
*May 24 18:02:48.483: ISAKMP:(1003):Old State = IKE_I_MM6 New State = IKE_I_MM6
*May 24 18:02:48.487: ISAKMP:(1003):Input = IKE_MESG_INTERNAL, IKE_PROCESS_COMPLETE
*May 24 18:02:48.487: ISAKMP:(1003):Old State = IKE_I_MM6 New State = IKE_P1_COMPLETE
*May 24 18:02:48.487: ISAKMP:(1003):beginning Quick Mode exchange, M-ID of 2605730229
*May 24 18:02:48.487: ISAKMP:(1003):QM Initiator gets spi
*May 24 18:02:48.487: ISAKMP:(1003): sending packet to 172.16.10.2 my_port 500
peer_port 500 (I) QM_IDLE
*May 24 18:02:48.487: ISAKMP:(1003):Sending an IKE IPv4 Packet.
*May 24 18:02:48.488: ISAKMP:(1003):Node 2605730229, Input = IKE_MESG_INTERNAL,
IKE_INIT_QM
*May 24 18:02:48.488: ISAKMP:(1003):Old State = IKE_QM_READY New State = IKE_QM_I_QM1
*May 24 18:02:48.488: ISAKMP:(1003):Input = IKE_MESG_INTERNAL, IKE_PHASE1_COMPLETE
*May 24 18:02:48.488: ISAKMP:(1003):Old State = IKE_P1_COMPLETE New State =
IKE_P1_COMPLETE
*May 24 18:02:48.488: ISAKMP (1003): received packet from 172.16.10.2 dport 500
sport 500 Global (I) QM_IDLE
*May 24 18:02:48.488: ISAKMP:(1003): processing HASH payload. message ID = 2605730229
*May 24 18:02:48.488: ISAKMP:(1003): processing SA payload. message ID = 2605730229
*May 24 18:02:48.488: ISAKMP:(1003):Checking IPSec proposal 1
*May 24 18:02:48.488: ISAKMP: transform 1, ESP_AES
*May 24 18:02:48.488: ISAKMP: attributes in transform:
*May 24 18:02:48.488: ISAKMP: key length is 128
*May 24 18:02:48.488: ISAKMP: authenticator is HMAC-SHA
*May 24 18:02:48.488: ISAKMP: encaps is 1 (Tunnel)
*May 24 18:02:48.488: ISAKMP: SA life type in seconds
*May 24 18:02:48.488: ISAKMP: SA life duration (basic) of 3600
*May 24 18:02:48.488: ISAKMP: SA life type in kilobytes
*May 24 18:02:48.488: ISAKMP: SA life duration (VPI) of 0x0 0x46 0x50 0x0
*May 24 18:02:48.488: ISAKMP:(1003):atts are acceptable.
*May 24 18:02:48.488: IPSEC(validate_proposal_request): proposal part #1
*May 24 18:02:48.488: IPSEC(validate_proposal_request): proposal part #1,
(key eng. msg.) INBOUND local= 172.16.10.1:0, remote= 172.16.10.2:0,
local_proxy= 192.168.1.0/255.255.255.0/256/0,
remote_proxy= 192.168.2.0/255.255.255.0/256/0,
protocol= ESP, transform= NONE (Tunnel),
lifedur= 0s and 0kb,
spi= 0x0(0), conn_id= 0, keysize= 128, flags= 0x0
*May 24 18:02:48.488: Crypto mapdb : proxy_match
src addr : 192.168.1.0
dst addr : 192.168.2.0
protocol : 0
src port : 0
dst port : 0
*May 24 18:02:48.488: ISAKMP:(1003): processing NONCE payload. message ID = 2605730229
*May 24 18:02:48.488: ISAKMP:(1003): processing ID payload. message ID = 2605730229
*May 24 18:02:48.488: ISAKMP:(1003): processing ID payload. message ID = 2605730229
*May 24 18:02:48.488: ISAKMP:(1003):Node 2605730229, Input = IKE_MESG_FROM_PEER,
IKE_QM_EXCH
*May 24 18:02:48.488: ISAKMP:(1003):Old State = IKE_QM_I_QM1 New State =
IKE_QM_IPSEC_INSTALL_AWAIT
*May 24 18:02:48.488: IPSEC(key_engine): got a queue event with 1 KMI message(s)
*May 24 18:02:48.488: Crypto mapdb : proxy_match
src addr : 192.168.1.0
dst addr : 192.168.2.0
protocol : 256
src port : 0
dst port : 0
*May 24 18:02:48.488: IPSEC(crypto_ipsec_create_ipsec_sas): Map found cmap
*May 24 18:02:48.489: IPSEC(crypto_ipsec_sa_find_ident_head): reconnecting with the
same proxies and peer 172.16.10.2
*May 24 18:02:48.489: IPSEC(create_sa): sa created,
(sa) sa_dest= 172.16.10.1, sa_proto= 50,
sa_spi= 0x4C0D0EF0(1275924208),
sa_trans= esp-aes esp-sha-hmac , sa_conn_id= 7
sa_lifetime(k/sec)= (4608000/3600)
*May 24 18:02:48.489: IPSEC(create_sa): sa created,
(sa) sa_dest= 172.16.10.2, sa_proto= 50,
sa_spi= 0xC72072C6(3340792518),
sa_trans= esp-aes esp-sha-hmac , sa_conn_id= 8
sa_lifetime(k/sec)= (4608000/3600)
In entrambe le fasi, l'associazione di protezione Internet e il protocollo ISAKMP (Key Management Protocol) e IPSec sono attivi.
Cisco IOS: Verifica contatori IPSec
R1#show crypto session detail
Crypto session current status
Code: C - IKE Configuration mode, D - Dead Peer Detection
K - Keepalives, N - NAT-traversal, T - cTCP encapsulation
X - IKE Extended Authentication, F - IKE Fragmentation
Interface: Ethernet0/0
Uptime: 00:00:05
Session status: UP-ACTIVE
Peer: 172.16.10.2 port 500 fvrf: (none) ivrf: (none)
Phase1_id: 172.16.10.2
Desc: (none)
IKEv1 SA: local 172.16.10.1/500 remote 172.16.10.2/500 Active
Capabilities:(none) connid:1003 lifetime:23:59:54
IPSEC FLOW: permit ip 192.168.1.0/255.255.255.0 192.168.2.0/255.255.255.0
Active SAs: 2, origin: crypto map
Inbound: #pkts dec'ed 0 drop 0 life (KB/Sec) 4164218/3594
Outbound: #pkts enc'ed 0 drop 0 life (KB/Sec) 4164218/3594A
Dopo l'invio dei 100 pacchetti:
R1#ping 192.168.2.1 source e0/1 repeat 100
Type escape sequence to abort.
Sending 100, 100-byte ICMP Echos to 192.168.2.1, timeout is 2 seconds:
Packet sent with a source address of 192.168.1.1
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Success rate is 100 percent (100/100), round-trip min/avg/max = 4/4/5 ms
R1#
R1#show crypto session detail
Crypto session current status
Code: C - IKE Configuration mode, D - Dead Peer Detection
K - Keepalives, N - NAT-traversal, T - cTCP encapsulation
X - IKE Extended Authentication, F - IKE Fragmentation
Interface: Ethernet0/0
Uptime: 00:00:09
Session status: UP-ACTIVE
Peer: 172.16.10.2 port 500 fvrf: (none) ivrf: (none)
Phase1_id: 172.16.10.2
Desc: (none)
IKEv1 SA: local 172.16.10.1/500 remote 172.16.10.2/500 Active
Capabilities:(none) connid:1003 lifetime:23:59:50
IPSEC FLOW: permit ip 192.168.1.0/255.255.255.0 192.168.2.0/255.255.255.0
Active SAs: 2, origin: crypto map
Inbound: #pkts dec'ed 100 drop 0 life (KB/Sec) 4164202/3590
Outbound: #pkts enc'ed 100 drop 0 life (KB/Sec) 4164202/3590
Cisco IOS: Verifica parametri IKEv1 e IPSec
R1#show crypto isakmp sa detail
Codes: C - IKE configuration mode, D - Dead Peer Detection
K - Keepalives, N - NAT-traversal
T - cTCP encapsulation, X - IKE Extended Authentication
psk - Preshared key, rsig - RSA signature
renc - RSA encryption
IPv4 Crypto ISAKMP SA
C-id Local Remote I-VRF Status Encr Hash Auth DH Lifetime Cap.
1003 172.16.10.1 172.16.10.2 ACTIVE aes sha psk 5 23:59:35
Engine-id:Conn-id = SW:3
R1#show crypto ipsec sa
interface: Ethernet0/0
Crypto map tag: cmap, local addr 172.16.10.1
protected vrf: (none)
local ident (addr/mask/prot/port): (192.168.1.0/255.255.255.0/0/0)
remote ident (addr/mask/prot/port): (192.168.2.0/255.255.255.0/0/0)
current_peer 172.16.10.2 port 500
PERMIT, flags={origin_is_acl,}
#pkts encaps: 100, #pkts encrypt: 100, #pkts digest: 100
#pkts decaps: 100, #pkts decrypt: 100, #pkts verify: 100
#pkts compressed: 0, #pkts decompressed: 0
#pkts not compressed: 0, #pkts compr. failed: 0
#pkts not decompressed: 0, #pkts decompress failed: 0
#send errors 0, #recv errors 0
local crypto endpt.: 172.16.10.1, remote crypto endpt.: 172.16.10.2
plaintext mtu 1438, path mtu 1500, ip mtu 1500, ip mtu idb Ethernet0/0
current outbound spi: 0xC72072C6(3340792518)
PFS (Y/N): N, DH group: none
inbound esp sas:
spi: 0x4C0D0EF0(1275924208)
transform: esp-aes esp-sha-hmac ,
in use settings ={Tunnel, }
conn id: 7, flow_id: SW:7, sibling_flags 80000040, crypto map: cmap
sa timing: remaining key lifetime (k/sec): (4164202/3562)
IV size: 16 bytes
replay detection support: Y
Status: ACTIVE(ACTIVE)
inbound ah sas:
inbound pcp sas:
outbound esp sas:
spi: 0xC72072C6(3340792518)
transform: esp-aes esp-sha-hmac ,
in use settings ={Tunnel, }
conn id: 8, flow_id: SW:8, sibling_flags 80000040, crypto map: cmap
sa timing: remaining key lifetime (k/sec): (4164202/3562)
IV size: 16 bytes
replay detection support: Y
Status: ACTIVE(ACTIVE)
outbound ah sas:
outbound pcp sas:
Entrambe le fasi sono attive. IPSec Security Parameter Index (SPI) viene negoziato. Il contatore è aumentato a 100 dopo l'invio di 100 pacchetti.
cigno forte: Definizione tunnel
pluton# /etc/init.d/ipsec start
May 24 20:02:48 localhost charon: 10[NET] received packet: from 172.16.10.1[500]
to 172.16.10.2[500] (168 bytes)
May 24 20:02:48 localhost charon: 10[ENC] parsed ID_PROT request 0 [ SA V V V V ]
May 24 20:02:48 localhost charon: 10[IKE] received NAT-T (RFC 3947) vendor ID
May 24 20:02:48 localhost charon: 10[IKE] received draft-ietf-ipsec-nat-t-ike-07
vendor ID
May 24 20:02:48 localhost charon: 10[IKE] received draft-ietf-ipsec-nat-t-ike-03
vendor ID
May 24 20:02:48 localhost charon: 10[IKE] received draft-ietf-ipsec-nat-t-ike-02\n
vendor ID
May 24 20:02:48 localhost charon: 10[IKE] 172.16.10.1 is initiating a Main Mode IKE_SA
May 24 20:02:48 localhost charon: 10[IKE] 172.16.10.1 is initiating a Main Mode IKE_SA
May 24 20:02:48 localhost charon: 10[ENC] generating ID_PROT response 0 [ SA V V V ]
May 24 20:02:48 localhost charon: 10[NET] sending packet: from 172.16.10.2[500] to
172.16.10.1[500] (140 bytes)
May 24 20:02:48 localhost charon: 11[NET] received packet: from 172.16.10.1[500] to
172.16.10.2[500] (348 bytes)
May 24 20:02:48 localhost charon: 11[ENC] parsed ID_PROT request 0
[ KE No V V V NAT-D NAT-D ]
May 24 20:02:48 localhost charon: 11[ENC] generating ID_PROT response 0
[ KE No NAT-D NAT-D ]
May 24 20:02:48 localhost charon: 11[NET] sending packet: from 172.16.10.2[500]
to 172.16.10.1[500] (308 bytes)
May 24 20:02:48 localhost charon: 12[NET] received packet: from 172.16.10.1[500]
to 172.16.10.2[500] (108 bytes)
May 24 20:02:48 localhost charon: 12[ENC] parsed ID_PROT request 0
[ ID HASH N(INITIAL_CONTACT) ]
May 24 20:02:48 localhost charon: 12[CFG] looking for pre-shared key peer configs
matching 172.16.10.2...172.16.10.1[172.16.10.1]
May 24 20:02:48 localhost charon: 12[CFG] selected peer config "ciscoios"
May 24 20:02:48 localhost charon: 12[IKE] IKE_SA ciscoios[2] established between
172.16.10.2[172.16.10.2]...172.16.10.1[172.16.10.1]
May 24 20:02:48 localhost charon: 12[IKE] IKE_SA ciscoios[2] established between
172.16.10.2[172.16.10.2]...172.16.10.1[172.16.10.1]
May 24 20:02:48 localhost charon: 12[IKE] scheduling reauthentication in 3289s
May 24 20:02:48 localhost charon: 12[IKE] maximum IKE_SA lifetime 3469s
May 24 20:02:48 localhost charon: 12[ENC] generating ID_PROT response 0 [ ID HASH ]
May 24 20:02:48 localhost charon: 12[NET] sending packet: from 172.16.10.2[500] to
172.16.10.1[500] (76 bytes)
May 24 20:02:48 localhost charon: 14[NET] received packet: from 172.16.10.1[500] to
172.16.10.2[500] (188 bytes)
May 24 20:02:48 localhost charon: 14[ENC] parsed QUICK_MODE request 2605730229
[ HASH SA No ID ID ]
May 24 20:02:48 localhost charon: 14[IKE] received 3600s lifetime, configured 1200s
May 24 20:02:48 localhost charon: 14[IKE] received 4608000000 lifebytes, configured 0
May 24 20:02:48 localhost charon: 14[ENC] generating QUICK_MODE response 2605730229
[ HASH SA No ID ID ]
May 24 20:02:48 localhost charon: 14[NET] sending packet: from 172.16.10.2[500] to
172.16.10.1[500] (188 bytes)
May 24 20:02:48 localhost charon: 15[NET] received packet: from 172.16.10.1[500] to
172.16.10.2[500] (60 bytes)
May 24 20:02:48 localhost charon: 15[ENC] parsed QUICK_MODE request 2605730229 [ HASH ]
May 24 20:02:48 localhost charon: 15[IKE] CHILD_SA ciscoios{2} established with SPIs
c72072c6_i 4c0d0ef0_o and TS 192.168.2.0/24 === 192.168.1.0/24
May 24 20:02:48 localhost charon: 15[IKE] CHILD_SA ciscoios{2} established with SPIs
c72072c6_i 4c0d0ef0_o and TS 192.168.2.0/24 === 192.168.1.0/24
May 24 20:02:48 localhost vpn: + 172.16.10.1 192.168.1.0/24 == 172.16.10.1 --
172.16.10.2 == 192.168.2.0/24
Entrambe le fasi sono attive. Vengono negoziati gli SPI corretti che proteggono il traffico tra i siti 192.168.2.0/24 e 192.168.1.0/24.
cigno forte: Verifica dello stato della connessione IPSec
pluton ~ # ipsec statusall
Status of IKE charon daemon (strongSwan 5.0.4, Linux 3.2.12-gentoo, x86_64):
uptime: 4 minutes, since May 24 20:02:15 2013
malloc: sbrk 393216, mmap 0, used 274064, free 119152
worker threads: 8 of 16 idle, 7/1/0/0 working, job queue: 0/0/0/0, scheduled: 4
loaded plugins: charon mysql sqlite aes des sha1 sha2 md5 random nonce x509
revocation constraints pubkey pkcs1 pkcs8 pgp dnskey pem openssl gcrypt fips-prf
gmp xcbc cmac hmac attr kernel-netlink resolve socket-default stroke updown
eap-identity eap-sim eap-aka eap-aka-3gpp2 eap-simaka-pseudonym eap-simaka-reauth
eap-md5 eap-gtc eap-mschapv2 eap-radius xauth-generic
Listening IP addresses:
10.0.0.100
192.168.10.1
172.16.10.2
192.168.2.1
Connections:
ciscoios: 172.16.10.2...172.16.10.1 IKEv1
ciscoios: local: [172.16.10.2] uses pre-shared key authentication
ciscoios: remote: [172.16.10.1] uses pre-shared key authentication
ciscoios: child: 192.168.2.0/24 === 192.168.1.0/24 TUNNEL
Security Associations (1 up, 0 connecting):
ciscoios[2]: ESTABLISHED 4 minutes ago, 172.16.10.2[172.16.10.2]...
172.16.10.1[172.16.10.1]
ciscoios[2]: IKEv1 SPIs: 278f22e3c3e5f606_i dbb5a27f3e0eccd1_r*,
pre-shared key reauthentication in 50 minutes
ciscoios[2]: IKE proposal: AES_CBC_128/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_1536
ciscoios{2}: INSTALLED, TUNNEL, ESP SPIs: c72072c6_i 4c0d0ef0_o
ciscoios{2}: AES_CBC_128/HMAC_SHA1_96, 10000 bytes_i (100 pkts, 255s ago),
10000 bytes_o (100 pkts, 255s ago), rekeying in 11 minutes
ciscoios{2}: 192.168.2.0/24 === 192.168.1.0/24
Sono disponibili informazioni dettagliate sui parametri ISAKMP e IPSec negoziati.
cigno forte: Verifica criterio IPSec
pluton ~ # ip -s xfrm policy
src 192.168.1.0/24 dst 192.168.2.0/24 uid 0
dir fwd action allow index 258 priority 1859 share any flag (0x00000000)
lifetime config:
limit: soft (INF)(bytes), hard (INF)(bytes)
limit: soft (INF)(packets), hard (INF)(packets)
expire add: soft 0(sec), hard 0(sec)
expire use: soft 0(sec), hard 0(sec)
lifetime current:
0(bytes), 0(packets)
add 2013-05-24 20:02:48 use -
tmpl src 172.16.10.1 dst 172.16.10.2
proto esp spi 0x00000000(0) reqid 2(0x00000002) mode tunnel
level required share any
enc-mask ffffffff auth-mask ffffffff comp-mask ffffffff
src 192.168.1.0/24 dst 192.168.2.0/24 uid 0
dir in action allow index 248 priority 1859 share any flag (0x00000000)
lifetime config:
limit: soft (INF)(bytes), hard (INF)(bytes)
limit: soft (INF)(packets), hard (INF)(packets)
expire add: soft 0(sec), hard 0(sec)
expire use: soft 0(sec), hard 0(sec)
lifetime current:
0(bytes), 0(packets)
add 2013-05-24 20:02:48 use 2013-05-24 20:02:56
tmpl src 172.16.10.1 dst 172.16.10.2
proto esp spi 0x00000000(0) reqid 2(0x00000002) mode tunnel
level required share any
enc-mask ffffffff auth-mask ffffffff comp-mask ffffffff
src 192.168.2.0/24 dst 192.168.1.0/24 uid 0
dir out action allow index 241 priority 1859 share any flag (0x00000000)
lifetime config:
limit: soft (INF)(bytes), hard (INF)(bytes)
limit: soft (INF)(packets), hard (INF)(packets)
expire add: soft 0(sec), hard 0(sec)
expire use: soft 0(sec), hard 0(sec)
lifetime current:
0(bytes), 0(packets)
add 2013-05-24 20:02:48 use 2013-05-24 20:02:56
tmpl src 172.16.10.2 dst 172.16.10.1
proto esp spi 0x00000000(0) reqid 2(0x00000002) mode tunnel
level required share any
enc-mask ffffffff auth-mask ffffffff comp-mask ffffffff
I dettagli precedenti comprendono tabelle di politica interna.
IKEv2 tra Cisco IOS e strongSwan
Cisco IOS
R1#ping 192.168.2.1 source e0/1 repeat 1
Definizione del tunnel attivata da Cisco IOS
*May 24 19:14:10.485: IPSEC(sa_request): ,
(key eng. msg.) OUTBOUND local= 172.16.10.1:500, remote= 172.16.10.2:500,
local_proxy= 192.168.1.0/255.255.255.0/256/0,
remote_proxy= 192.168.2.0/255.255.255.0/256/0,
protocol= ESP, transform= esp-aes esp-sha-hmac (Tunnel),
lifedur= 3600s and 4608000kb,
spi= 0x0(0), conn_id= 0, keysize= 128, flags= 0x0
*May 24 19:14:10.486: IKEv2:% Getting preshared key from profile keyring keys
*May 24 19:14:10.486: IKEv2:% Matched peer block 'strongswan'
*May 24 19:14:10.486: IKEv2:Searching Policy with fvrf 0, local address 172.16.10.1
*May 24 19:14:10.486: IKEv2:Found Policy 'ikev2policy'
*May 24 19:14:10.486: IKEv2:(SA ID = 1):[IKEv2 -> Crypto Engine] Computing DH public
key, DH Group 5
*May 24 19:14:10.486: IKEv2:(SA ID = 1):[Crypto Engine -> IKEv2] DH key Computation
PASSED
*May 24 19:14:10.486: IKEv2:(SA ID = 1):Request queued for computation of DH key
*May 24 19:14:10.486: IKEv2:IKEv2 initiator - no config data to send in IKE_SA_INIT exch
*May 24 19:14:10.486: IKEv2:(SA ID = 1):Generating IKE_SA_INIT message
*May 24 19:14:10.486: IKEv2:(SA ID = 1):IKE Proposal: 1, SPI size: 0
(initial negotiation),
Num. transforms: 4
AES-CBC SHA1 SHA96 DH_GROUP_1536_MODP/Group 5
*May 24 19:14:10.486: IKEv2:(SA ID = 1):Sending Packet [To 172.16.10.2:500/From
172.16.10.1:500/VRF i0:f0]
Initiator SPI : 9FFC38791FFEF212 - Responder SPI : 0000000000000000 Message id: 0
IKEv2 IKE_SA_INIT Exchange REQUEST
Payload contents:
SA KE N VID VID NOTIFY(NAT_DETECTION_SOURCE_IP) NOTIFY(NAT_DETECTION_DESTINATION_IP)
*May 24 19:14:10.486: IKEv2:(SA ID = 1):Insert SA
*May 24 19:14:10.495: IKEv2:(SA ID = 1):Received Packet [From 172.16.10.2:500/To
172.16.10.1:500/VRF i0:f0]
Initiator SPI : 9FFC38791FFEF212 - Responder SPI : 6CDC17F5B0B10C1A Message id: 0
IKEv2 IKE_SA_INIT Exchange RESPONSE
Payload contents:
SA KE N NOTIFY(NAT_DETECTION_SOURCE_IP) NOTIFY(NAT_DETECTION_DESTINATION_IP)
NOTIFY(Unknown - 16404)
*May 24 19:14:10.495: IKEv2:(SA ID = 1):Processing IKE_SA_INIT message
*May 24 19:14:10.495: IKEv2:(SA ID = 1):Verify SA init message
*May 24 19:14:10.495: IKEv2:(SA ID = 1):Processing IKE_SA_INIT message
*May 24 19:14:10.495: IKEv2:(SA ID = 1):Checking NAT discovery
*May 24 19:14:10.495: IKEv2:(SA ID = 1):NAT not found
*May 24 19:14:10.495: IKEv2:(SA ID = 1):[IKEv2 -> Crypto Engine] Computing DH
secret key, DH Group 5
*May 24 19:14:10.504: IKEv2:(SA ID = 1):[Crypto Engine -> IKEv2] DH key Computation
PASSED
*May 24 19:14:10.504: IKEv2:(SA ID = 1):Request queued for computation of DH secret
*May 24 19:14:10.504: IKEv2:(SA ID = 1):[IKEv2 -> Crypto Engine] Calculate SKEYSEED
and create rekeyed IKEv2 SA
*May 24 19:14:10.504: IKEv2:(SA ID = 1):[Crypto Engine -> IKEv2] SKEYSEED
calculation and creation of
rekeyed IKEv2 SA PASSED
*May 24 19:14:10.504: IKEv2:(SA ID = 1):Completed SA init exchange
*May 24 19:14:10.504: IKEv2:(SA ID = 1):Check for EAP exchange
*May 24 19:14:10.504: IKEv2:(SA ID = 1):Generate my authentication data
*May 24 19:14:10.504: IKEv2:(SA ID = 1):Use preshared key for id 172.16.10.1,
key len 5
*May 24 19:14:10.504: IKEv2:[IKEv2 -> Crypto Engine] Generate IKEv2 authentication
data
*May 24 19:14:10.504: IKEv2:[Crypto Engine -> IKEv2] IKEv2 authentication data
generation PASSED
*May 24 19:14:10.504: IKEv2:(SA ID = 1):Get my authentication method
*May 24 19:14:10.504: IKEv2:(SA ID = 1):My authentication method is 'PSK'
*May 24 19:14:10.504: IKEv2:(SA ID = 1):Check for EAP exchange
*May 24 19:14:10.504: IKEv2:(SA ID = 1):Generating IKE_AUTH message
*May 24 19:14:10.504: IKEv2:(SA ID = 1):Constructing IDi payload: '172.16.10.1'
of type 'IPv4 address'
*May 24 19:14:10.504: IKEv2:(SA ID = 1):ESP Proposal: 1, SPI size: 4
(IPSec negotiation),
Num. transforms: 3
AES-CBC SHA96 Don't use ESN
*May 24 19:14:10.504: IKEv2:(SA ID = 1):Building packet for encryption.
Payload contents:
VID IDi AUTH SA TSi TSr NOTIFY(INITIAL_CONTACT) NOTIFY(SET_WINDOW_SIZE)
NOTIFY(ESP_TFC_NO_SUPPORT) NOTIFY(NON_FIRST_FRAGS)
*May 24 19:14:10.505: IKEv2:(SA ID = 1):Sending Packet
[To 172.16.10.2:500/From 172.16.10.1:500/VRF i0:f0]
Initiator SPI : 9FFC38791FFEF212 - Responder SPI : 6CDC17F5B0B10C1A Message id: 1
IKEv2 IKE_AUTH Exchange REQUEST
Payload contents:
ENCR
*May 24 19:14:10.522: IKEv2:(SA ID = 1):Received Packet
[From 172.16.10.2:500/To 172.16.10.1:500/VRF i0:f0]
Initiator SPI : 9FFC38791FFEF212 - Responder SPI : 6CDC17F5B0B10C1A Message id: 1
IKEv2 IKE_AUTH Exchange RESPONSE
Payload contents:
IDr AUTH SA TSi TSr NOTIFY(Unknown - 16403)
*May 24 19:14:10.522: IKEv2:(SA ID = 1):Process auth response notify
*May 24 19:14:10.522: IKEv2:(SA ID = 1):Searching policy based on peer's
identity '172.16.10.2' of type 'IPv4 address'
*May 24 19:14:10.522: IKEv2:Searching Policy with fvrf 0, local address 172.16.10.1
*May 24 19:14:10.522: IKEv2:Found Policy 'ikev2policy'
*May 24 19:14:10.522: IKEv2:(SA ID = 1):Verify peer's policy
*May 24 19:14:10.522: IKEv2:(SA ID = 1):Peer's policy verified
*May 24 19:14:10.522: IKEv2:(SA ID = 1):Get peer's authentication method
*May 24 19:14:10.522: IKEv2:(SA ID = 1):Peer's authentication method is 'PSK'
*May 24 19:14:10.522: IKEv2:(SA ID = 1):Get peer's preshared key for 172.16.10.2
*May 24 19:14:10.522: IKEv2:(SA ID = 1):Verify peer's authentication data
*May 24 19:14:10.522: IKEv2:(SA ID = 1):Use preshared key for id 172.16.10.2, key len 5
*May 24 19:14:10.522: IKEv2:[IKEv2 -> Crypto Engine] Generate IKEv2 authentication data
*May 24 19:14:10.522: IKEv2:[Crypto Engine -> IKEv2] IKEv2 authentication data
generation PASSED
*May 24 19:14:10.522: IKEv2:(SA ID = 1):Verification of peer's authenctication data
PASSED
*May 24 19:14:10.522: IKEv2:(SA ID = 1):Check for EAP exchange
*May 24 19:14:10.522: IKEv2:(SA ID = 1):Processing IKE_AUTH message
*May 24 19:14:10.522: IKEv2:KMI/verify policy/sending to IPSec:
prot: 3 txfm: 12 hmac 2 flags 8177 keysize 128 IDB 0x0
*May 24 19:14:10.522: IPSEC(validate_proposal_request): proposal part #1
*May 24 19:14:10.522: IPSEC(validate_proposal_request): proposal part #1,
(key eng. msg.) INBOUND local= 172.16.10.1:0, remote= 172.16.10.2:0,
local_proxy= 192.168.1.0/255.255.255.0/256/0,
remote_proxy= 192.168.2.0/255.255.255.0/256/0,
protocol= ESP, transform= NONE (Tunnel),
lifedur= 0s and 0kb,
spi= 0x0(0), conn_id= 0, keysize= 128, flags= 0x0
*May 24 19:14:10.522: Crypto mapdb : proxy_match
src addr : 192.168.1.0
dst addr : 192.168.2.0
protocol : 0
src port : 0
dst port : 0
*May 24 19:14:10.522: IKEv2:(SA ID = 1):IKEV2 SA created; inserting SA into database.
SA lifetime timer (86400 sec) started
*May 24 19:14:10.522: IKEv2:(SA ID = 1):Session with IKE ID PAIR
(172.16.10.2, 172.16.10.1) is UP
*May 24 19:14:10.522: IKEv2:IKEv2 MIB tunnel started, tunnel index 1
*May 24 19:14:10.522: IKEv2:(SA ID = 1):Load IPSEC key material
*May 24 19:14:10.522: IKEv2:(SA ID = 1):[IKEv2 -> IPsec] Create IPsec SA into
IPsec database
*May 24 19:14:10.522: IKEv2:(SA ID = 1):Asynchronous request queued
*May 24 19:14:10.522: IKEv2:(SA ID = 1):
*May 24 19:14:10.523: IPSEC(key_engine): got a queue event with 1 KMI message(s)
*May 24 19:14:10.523: Crypto mapdb : proxy_match
src addr : 192.168.1.0
dst addr : 192.168.2.0
protocol : 256
src port : 0
dst port : 0
*May 24 19:14:10.523: IPSEC(crypto_ipsec_create_ipsec_sas): Map found cmap
*May 24 19:14:10.523: IPSEC(crypto_ipsec_sa_find_ident_head): reconnecting with
the same proxies and peer 172.16.10.2
*May 24 19:14:10.523: IPSEC(create_sa): sa created,
(sa) sa_dest= 172.16.10.1, sa_proto= 50,
sa_spi= 0xDF405365(3745534821),
sa_trans= esp-aes esp-sha-hmac , sa_conn_id= 6
sa_lifetime(k/sec)= (4608000/3600)
*May 24 19:14:10.523: IPSEC(create_sa): sa created,
(sa) sa_dest= 172.16.10.2, sa_proto= 50,
sa_spi= 0xC0CC116C(3234599276),
sa_trans= esp-aes esp-sha-hmac , sa_conn_id= 5
sa_lifetime(k/sec)= (4608000/3600)
*May 24 19:14:10.523: IPSEC: Expand action denied, notify RP
*May 24 19:14:10.523: IKEv2:(SA ID = 1):[IPsec -> IKEv2] Creation of IPsec
SA into IPsec database PASSED
La sessione IKEv2 è attiva ed è stata creata l'associazione di protezione IPSec per la protezione del traffico tra i percorsi 192.168.1.0/24 e 192.168.2.0/24.
Cisco IOS: Verifica contatori IPSec
R1#show crypto session detail
Crypto session current status
Code: C - IKE Configuration mode, D - Dead Peer Detection
K - Keepalives, N - NAT-traversal, T - cTCP encapsulation
X - IKE Extended Authentication, F - IKE Fragmentation
Interface: Ethernet0/0
Uptime: 00:00:09
Session status: UP-ACTIVE
Peer: 172.16.10.2 port 500 fvrf: (none) ivrf: (none)
Phase1_id: 172.16.10.2
Desc: (none)
IKEv2 SA: local 172.16.10.1/500 remote 172.16.10.2/500 Active
Capabilities:(none) connid:1 lifetime:23:59:51
IPSEC FLOW: permit ip 192.168.1.0/255.255.255.0 192.168.2.0/255.255.255.0
Active SAs: 2, origin: crypto map
Inbound: #pkts dec'ed 0 drop 0 life (KB/Sec) 4375820/3590
Outbound: #pkts enc'ed 0 drop 0 life (KB/Sec) 4375820/3590
Dopo l'invio dei 100 pacchetti:
R1#ping 192.168.2.1 source 192.168.1.1 repeat 100
Type escape sequence to abort.
Sending 100, 100-byte ICMP Echos to 192.168.2.1, timeout is 2 seconds:
Packet sent with a source address of 192.168.1.1
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Success rate is 100 percent (100/100), round-trip min/avg/max = 1/4/5 ms
R1#
R1#show crypto session detail
Crypto session current status
Code: C - IKE Configuration mode, D - Dead Peer Detection
K - Keepalives, N - NAT-traversal, T - cTCP encapsulation
X - IKE Extended Authentication, F - IKE Fragmentation
Interface: Ethernet0/0
Uptime: 00:00:15
Session status: UP-ACTIVE
Peer: 172.16.10.2 port 500 fvrf: (none) ivrf: (none)
Phase1_id: 172.16.10.2
Desc: (none)
IKEv2 SA: local 172.16.10.1/500 remote 172.16.10.2/500 Active
Capabilities:(none) connid:1 lifetime:23:59:45
IPSEC FLOW: permit ip 192.168.1.0/255.255.255.0 192.168.2.0/255.255.255.0
Active SAs: 2, origin: crypto map
Inbound: #pkts dec'ed 100 drop 0 life (KB/Sec) 4375803/3585
Outbound: #pkts enc'ed 100 drop 0 life (KB/Sec) 4375803/3585
Il contatore è aumentato di 100.
Cisco IOS: Verifica parametri IKEv2 e IPSec
Cisco IOS ha statistiche/dettagli molto interessanti per la sessione IKEv2:
R1#show crypto ikev2 sa detailed
IPv4 Crypto IKEv2 SA
Tunnel-id Local Remote fvrf/ivrf Status
1 172.16.10.1/500 172.16.10.2/500 none/none READY
Encr: AES-CBC, keysize: 128, Hash: SHA96, DH Grp:5, Auth sign: PSK, Auth verify: PSK
Life/Active Time: 86400/152 sec
CE id: 1019, Session-id: 3
Status Description: Negotiation done
Local spi: 9FFC38791FFEF212 Remote spi: 6CDC17F5B0B10C1A
Local id: 172.16.10.1
Remote id: 172.16.10.2
Local req msg id: 2 Remote req msg id: 0
Local next msg id: 2 Remote next msg id: 0
Local req queued: 2 Remote req queued: 0
Local window: 5 Remote window: 1
DPD configured for 0 seconds, retry 0
Fragmentation not configured.
Extended Authentication not configured.
NAT-T is not detected
Cisco Trust Security SGT is disabled
Initiator of SA : Yes
IPv6 Crypto IKEv2 SA
R1#show crypto ipsec sa
interface: Ethernet0/0
Crypto map tag: cmap, local addr 172.16.10.1
protected vrf: (none)
local ident (addr/mask/prot/port): (192.168.1.0/255.255.255.0/0/0)
remote ident (addr/mask/prot/port): (192.168.2.0/255.255.255.0/0/0)
current_peer 172.16.10.2 port 500
PERMIT, flags={origin_is_acl,}
#pkts encaps: 100, #pkts encrypt: 100, #pkts digest: 100
#pkts decaps: 100, #pkts decrypt: 100, #pkts verify: 100
#pkts compressed: 0, #pkts decompressed: 0
#pkts not compressed: 0, #pkts compr. failed: 0
#pkts not decompressed: 0, #pkts decompress failed: 0
#send errors 0, #recv errors 0
local crypto endpt.: 172.16.10.1, remote crypto endpt.: 172.16.10.2
plaintext mtu 1438, path mtu 1500, ip mtu 1500, ip mtu idb Ethernet0/0
current outbound spi: 0xC0CC116C(3234599276)
PFS (Y/N): N, DH group: none
inbound esp sas:
spi: 0xDF405365(3745534821)
transform: esp-aes esp-sha-hmac ,
in use settings ={Tunnel, }
conn id: 6, flow_id: SW:6, sibling_flags 80000040, crypto map: cmap
sa timing: remaining key lifetime (k/sec): (4375803/3442)
IV size: 16 bytes
replay detection support: Y
Status: ACTIVE(ACTIVE)
inbound ah sas:
inbound pcp sas:
outbound esp sas:
spi: 0xC0CC116C(3234599276)
transform: esp-aes esp-sha-hmac ,
in use settings ={Tunnel, }
conn id: 5, flow_id: SW:5, sibling_flags 80000040, crypto map: cmap
sa timing: remaining key lifetime (k/sec): (4375803/3442)
IV size: 16 bytes
replay detection support: Y
Status: ACTIVE(ACTIVE)
outbound ah sas:
outbound pcp sas:
cigno forte: Definizione tunnel
May 24 21:14:10 localhost charon: 08[NET] received packet: from 172.16.10.1[500]
to 172.16.10.2[500] (400 bytes)
May 24 21:14:10 localhost charon: 08[ENC] parsed IKE_SA_INIT request 0
[ SA KE No V V N(NATD_S_IP) N(NATD_D_IP) ]
May 24 21:14:10 localhost charon: 08[ENC] received unknown vendor
ID: 43:49:53:43:4f:2d:44:45:4c:45:54:45:2d:52:45:41:53:4f:4e
May 24 21:14:10 localhost charon: 08[ENC] received unknown vendor ID:
46:4c:45:58:56:50:4e:2d:53:55:50:50:4f:52:54:45:44
May 24 21:14:10 localhost charon: 08[IKE] 172.16.10.1 is initiating an IKE_SA
May 24 21:14:10 localhost charon: 08[IKE] 172.16.10.1 is initiating an IKE_SA
May 24 21:14:10 localhost charon: 08[ENC] generating IKE_SA_INIT response 0
[ SA KE No N(NATD_S_IP) N(NATD_D_IP) N(MULT_AUTH) ]
May 24 21:14:10 localhost charon: 08[NET] sending packet: from 172.16.10.2[500]
to 172.16.10.1[500] (376 bytes)
May 24 21:14:10 localhost charon: 07[NET] received packet: from 172.16.10.1[500]
to 172.16.10.2[500] (284 bytes)
May 24 21:14:10 localhost charon: 07[ENC] parsed IKE_AUTH request 1 [ V IDi AUTH
SA TSi TSr N(INIT_CONTACT) N(SET_WINSIZE) N(ESP_TFC_PAD_N) N(NON_FIRST_FRAG) ]
May 24 21:14:10 localhost charon: 07[CFG] looking for peer configs matching
172.16.10.2[%any]...172.16.10.1[172.16.10.1]
May 24 21:14:10 localhost charon: 07[CFG] selected peer config 'ciscoios'
May 24 21:14:10 localhost charon: 07[IKE] authentication of '172.16.10.1' with
pre-shared key successful
May 24 21:14:10 localhost charon: 07[IKE] received ESP_TFC_PADDING_NOT_SUPPORTED,
not using ESPv3 TFC padding
May 24 21:14:10 localhost charon: 07[IKE] authentication of '172.16.10.2' (myself)
with pre-shared key
May 24 21:14:10 localhost charon: 07[IKE] IKE_SA ciscoios[2] established between
172.16.10.2[172.16.10.2]...172.16.10.1[172.16.10.1]
May 24 21:14:10 localhost charon: 07[IKE] IKE_SA ciscoios[2] established between
172.16.10.2[172.16.10.2]...172.16.10.1[172.16.10.1]
May 24 21:14:10 localhost charon: 07[IKE] scheduling reauthentication in 3247s
May 24 21:14:10 localhost charon: 07[IKE] maximum IKE_SA lifetime 3427s
May 24 21:14:10 localhost charon: 07[IKE] CHILD_SA ciscoios{2} established with
SPIs c0cc116c_i df405365_o and TS 192.168.2.0/24 === 192.168.1.0/24
May 24 21:14:10 localhost charon: 07[IKE] CHILD_SA ciscoios{2} established with
SPIs c0cc116c_i df405365_o and TS 192.168.2.0/24 === 192.168.1.0/24
May 24 21:14:10 localhost vpn: + 172.16.10.1 192.168.1.0/24 == 172.16.10.1 --
172.16.10.2 == 192.168.2.0/24
I dettagli di impostazione del tunnel sono simili a quelli di IKEv1.
cigno forte: Verifica dello stato della connessione IPSec
pluton ~ # ipsec statusall
Status of IKE charon daemon (strongSwan 5.0.4, Linux 3.2.12-gentoo, x86_64):
uptime: 2 minutes, since May 24 21:13:27 2013
malloc: sbrk 393216, mmap 0, used 274864, free 118352
worker threads: 8 of 16 idle, 7/1/0/0 working, job queue: 0/0/0/0, scheduled: 4
loaded plugins: charon mysql sqlite aes des sha1 sha2 md5 random nonce x509
revocation constraints pubkey pkcs1 pkcs8 pgp dnskey pem openssl gcrypt
fips-prf gmp xcbc cmac hmac attr kernel-netlink resolve socket-default
stroke updown eap-identity eap-sim eap-aka eap-aka-3gpp2 eap-simaka-pseudonym
eap-simaka-reauth eap-md5 eap-gtc eap-mschapv2 eap-radius xauth-generic
Listening IP addresses:
10.0.0.100
192.168.10.1
192.168.2.1
172.16.10.2
Connections:
ciscoios: 172.16.10.2...172.16.10.1 IKEv2
ciscoios: local: [172.16.10.2] uses pre-shared key authentication
ciscoios: remote: [172.16.10.1] uses pre-shared key authentication
ciscoios: child: 192.168.2.0/24 === 192.168.1.0/24 TUNNEL
Security Associations (1 up, 0 connecting):
ciscoios[2]: ESTABLISHED 116 seconds ago, 172.16.10.2[172.16.10.2]...
172.16.10.1[172.16.10.1]
ciscoios[2]: IKEv2 SPIs: 12f2fe1f7938fc9f_i 1a0cb1b0f517dc6c_r*,
pre-shared key reauthentication in 52 minutes
ciscoios[2]: IKE proposal: AES_CBC_128/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_1536
ciscoios{2}: INSTALLED, TUNNEL, ESP SPIs: c0cc116c_i df405365_o
ciscoios{2}: AES_CBC_128/HMAC_SHA1_96, 10000 bytes_i (100 pkts, 102s ago),
10000 bytes_o (100 pkts, 102s ago), rekeying in 12 minutes
ciscoios{2}: 192.168.2.0/24 === 192.168.1.0/24
cigno forte: Verifica criterio IPSec
pluton ~ # ip -s xfrm policy
src 192.168.1.0/24 dst 192.168.2.0/24 uid 0
dir fwd action allow index 1154 priority 1859 share any flag (0x00000000)
lifetime config:
limit: soft (INF)(bytes), hard (INF)(bytes)
limit: soft (INF)(packets), hard (INF)(packets)
expire add: soft 0(sec), hard 0(sec)
expire use: soft 0(sec), hard 0(sec)
lifetime current:
0(bytes), 0(packets)
add 2013-05-24 21:14:10 use -
tmpl src 172.16.10.1 dst 172.16.10.2
proto esp spi 0x00000000(0) reqid 2(0x00000002) mode tunnel
level required share any
enc-mask ffffffff auth-mask ffffffff comp-mask ffffffff
src 192.168.1.0/24 dst 192.168.2.0/24 uid 0
dir in action allow index 1144 priority 1859 share any flag (0x00000000)
lifetime config:
limit: soft (INF)(bytes), hard (INF)(bytes)
limit: soft (INF)(packets), hard (INF)(packets)
expire add: soft 0(sec), hard 0(sec)
expire use: soft 0(sec), hard 0(sec)
lifetime current:
0(bytes), 0(packets)
add 2013-05-24 21:14:10 use 2013-05-24 21:14:23
tmpl src 172.16.10.1 dst 172.16.10.2
proto esp spi 0x00000000(0) reqid 2(0x00000002) mode tunnel
level required share any
enc-mask ffffffff auth-mask ffffffff comp-mask ffffffff
src 192.168.2.0/24 dst 192.168.1.0/24 uid 0
dir out action allow index 1137 priority 1859 share any flag (0x00000000)
lifetime config:
limit: soft (INF)(bytes), hard (INF)(bytes)
limit: soft (INF)(packets), hard (INF)(packets)
expire add: soft 0(sec), hard 0(sec)
expire use: soft 0(sec), hard 0(sec)
lifetime current:
0(bytes), 0(packets)
add 2013-05-24 21:14:10 use 2013-05-24 21:14:23
tmpl src 172.16.10.2 dst 172.16.10.1
proto esp spi 0x00000000(0) reqid 2(0x00000002) mode tunnel
level required share any
enc-mask ffffffff auth-mask ffffffff comp-mask ffffffff
Informazioni correlate
Cronologia delle revisioni
| Revisione | Data di pubblicazione | Commenti |
|---|---|---|
1.0 |
27-Jan-2014 |
Versione iniziale |
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