Configuración de la asignación LDAP de AnyConnect en Firepower Threat Defense (FTD)
Contenido
Introducción
Este documento proporciona un ejemplo de configuración de la asignación del protocolo ligero de acceso a directorios (LDAP) para usuarios de AnyConnect en Firepower Threat Defense (FTD) mediante una política FlexConfig de Firepower Management Center (FMC). Esta configuración se utiliza para permitir que usuarios específicos que pertenecen a un grupo de Active Directory (AD) establezcan una conexión de red privada virtual (VPN). Los usuarios de diferentes grupos AD no definidos en el mapa no podrán conectarse con el mismo perfil.
Prerequisites
Requirements
Cisco recomienda que conozca estos temas:
- Configuración de rango AD en FMC
- Windows Active Directory
- Configuración de AnyConnect (SSLVPN) en FMC
- Conocimiento básico de los objetos FlexConfig en FMC
Componentes Utilizados
- FirePower Manager Center (FMC) versión 6.2.3 y 6.5.0
- FirePower Threat Defense (FTD) versión 6.2.3 y 6.5.0
- Windows Server con Active Directory
Configurar
Configuración en el FTD
En este ejemplo, los usuarios que pertenecen al Grupo AD1 utilizan una configuración de túnel completo y los usuarios que pertenecen al Grupo AD2 tienen acceso limitado a hosts específicos. Los demás usuarios que no pertenecen a estos grupos no pueden ser autenticados.
Paso 1. Configure AnyConnect mediante la autenticación LDAP e implemente los cambios. Se puede encontrar un ejemplo en esta guía.
Paso 2. Vaya a Devices > Remote Access > Edit AnyConnect Policy > Advanced > Group Policies .
Paso 3. Cree 3 políticas de grupo diferentes:
- Group1 con la configuración de Tunelización Dividida configurada para Permitir todo el tráfico sobre el túnel.
- Grupo 2 con la configuración de Tunelización Dividida establecida en Dividir.
- grupo NOACCESS para usuarios que no pertenecen a ninguno de los grupos anteriores. El campo Inicio de sesión simultáneo por usuario debe establecerse en 0.
Paso 4. Asigne la política de grupo de NOACCESS al perfil de conexión.
Paso 5. Vaya a Object > Object Management t> FlexConfig > FlexConfig Object > Add FlexConfig Object.
Paso 6. Agregue el miembro necesario de los valores necesarios para la configuración del mapa de atributos LDAP. Para obtener el DN de grupo del servidor, puede utilizar el comando "dsquery samid -group <group-name>".
La implementación debe establecerse como Once y Type como Prepend.
Consejo: Los nombres y valores de atributos distinguen entre mayúsculas y minúsculas. Si el mapping no ocurre correctamente, asegúrese de que se haya utilizado la ortografía y la capitalización correctas en el mapa de atributos LDAP para los nombres y valores de atributos de Cisco y LDAP.
Paso 7. Crear otro FlexConfig (objeto) denominado AAAserverLDAPmapping. Este objeto asocia el mapa de atributos a la configuración aaa-server.
Los valores de implementación deben establecerse como Everytime y Type como Append.
Paso 8. Vaya a Devices > FlexConfig > Edit Current FlexConfig. Asegúrese de que el orden de los objetos FlexConfig en la política FlexConfig sea primero el objeto FlexConfig del mapa de atributos LDAP seguido del objeto AAA-server.
Paso 9. Implemente la configuración en el dispositivo para enviar esta configuración al dispositivo administrado.
Para agregar una entrada adicional en el mapa LDAP, modifique el objeto FlexConfig LDAPAtributoMAP existente para incluir SOLAMENTE el nuevo valor de mapa.
Verificación
Conéctese al FTD CLISH y ejecute estos comandos para asegurarse de que los usuarios de los grupos definidos puedan conectarse.
> show vpn-sessiondb anyconnect Session Type: AnyConnect Username : cisco1 Index : 25 Assigned IP : 10.10.10.1 Public IP : 192.168.109.80 Protocol : AnyConnect-Parent SSL-Tunnel DTLS-Tunnel License : AnyConnect Premium Encryption : AnyConnect-Parent: (1)none SSL-Tunnel: (1)AES-GCM-256 DTLS-Tunnel: (1)AES256 Hashing : AnyConnect-Parent: (1)none SSL-Tunnel: (1)SHA384 DTLS-Tunnel: (1)SHA1 Bytes Tx : 15820 Bytes Rx : 160 Group Policy : Group1 Tunnel Group : AnyConnect Login Time : 16:02:45 UTC Tue Oct 9 2018 Duration : 0h:00m:38s Inactivity : 0h:00m:00s VLAN Mapping : N/A VLAN : none Audt Sess ID : 00000000000190005bbcd125 Security Grp : none Tunnel Zone : 0 > show vpn-sessiondb anyconnect Session Type: AnyConnect Username : cisco2 Index : 26 Assigned IP : 11.11.11.1 Public IP : 192.168.109.80 Protocol : AnyConnect-Parent SSL-Tunnel DTLS-Tunnel License : AnyConnect Premium Encryption : AnyConnect-Parent: (1)none SSL-Tunnel: (1)AES-GCM-256 DTLS-Tunnel: (1)AES256 Hashing : AnyConnect-Parent: (1)none SSL-Tunnel: (1)SHA384 DTLS-Tunnel: (1)SHA1 Bytes Tx : 15820 Bytes Rx : 442 Group Policy : Group2 Tunnel Group : AnyConnect Login Time : 16:04:12 UTC Tue Oct 9 2018 Duration : 0h:00m:14s Inactivity : 0h:00m:00s VLAN Mapping : N/A VLAN : none Audt Sess ID : 000000000001a0005bbcd17c Security Grp : none Tunnel Zone : 0
Troubleshoot
Depuraciones:
Para verificar la transacción LDAP, puede utilizar estos comandos debug.
> system support diagnostic-cli
debug ldap 250
debug aaa common 250
Estos son ejemplos de resultados exitosos para cada comando debug.
firepower# debug ldap 250
debug ldap enabled at level 250
firepower#
[49] Session Start
[49] New request Session, context 0x00002aaad332f100, reqType = Authentication
[49] Fiber started
[49] Creating LDAP context with uri=ldap://192.168.109.29:389
[49] Connect to LDAP server: ldap://192.168.109.29:389, status = Successful
[49] supportedLDAPVersion: value = 3
[49] supportedLDAPVersion: value = 2
[49] LDAP server 192.168.109.29 is Active directory
[49] Binding as AdminFTD
[49] Performing Simple authentication for AdminFTD to 192.168.109.29
[49] LDAP Search:
Base DN = [DC=cisco,DC=com]
Filter = [samaccountname=cisco1]
Scope = [SUBTREE]
[49] User DN = [CN=cisco1,CN=Users,DC=cisco,DC=com]
[49] Talking to Active Directory server 192.168.109.29
[49] Reading password policy for cisco1, dn:CN=cisco1,CN=Users,DC=cisco,DC=com
[49] Read bad password count 1
[49] Binding as cisco1
[49] Performing Simple authentication for cisco1 to 192.168.109.29
[49] Processing LDAP response for user cisco1
[49] Message (cisco1):
[49] Authentication successful for cisco1 to 192.168.109.29
[49] Retrieved User Attributes:
[49] objectClass: value = top
[49] objectClass: value = person
[49] objectClass: value = organizationalPerson
[49] objectClass: value = user
[49] cn: value = cisco1
[49] givenName: value = cisco1
[49] distinguishedName: value = CN=cisco1,CN=Users,DC=cisco,DC=com
[49] instanceType: value = 4
[49] whenCreated: value = 20181009153032.0Z
[49] whenChanged: value = 20181009154032.0Z
[49] displayName: value = cisco1
[49] uSNCreated: value = 856333
[49] memberOf: value = CN=group1,CN=Users,DC=cisco,DC=com
[49] mapped to Group-Policy: value = Group1
[49] mapped to LDAP-Class: value = Group1
[49] uSNChanged: value = 856372
[49] name: value = cisco1
[49] objectGUID: value = .K.'..3N....Q...
[49] userAccountControl: value = 66048
[49] badPwdCount: value = 1
[49] codePage: value = 0
[49] countryCode: value = 0
[49] badPasswordTime: value = 131835752510299209
[49] lastLogoff: value = 0
[49] lastLogon: value = 131835733331105504
[49] pwdLastSet: value = 131835726324409149
[49] primaryGroupID: value = 513
[49] objectSid: value = ............E1.E.G..9..@s...
[49] adminCount: value = 1
[49] accountExpires: value = 9223372036854775807
[49] logonCount: value = 0
[49] sAMAccountName: value = cisco1
[49] sAMAccountType: value = 805306368
[49] userPrincipalName: value = cisco1@cisco.com
[49] objectCategory: value = CN=Person,CN=Schema,CN=Configuration,DC=cisco,DC=com
[49] dSCorePropagationData: value = 20181009153316.0Z
[49] dSCorePropagationData: value = 16010101000000.0Z
[49] lastLogonTimestamp: value = 131835732321783732
[49] Fiber exit Tx=551 bytes Rx=2628 bytes, status=1
[49] Session End
firepower# debug aaa common 250 debug aaa common enabled at level 250 firepower# AAA API: In aaa_open AAA session opened: handle = 31 AAA API: In aaa_process_async aaa_process_async: sending AAA_MSG_PROCESS AAA task: aaa_process_msg(0x00002b4ad7423b20) received message type 0 [31] AAA FSM: In AAA_StartAAATransaction [31] AAA FSM: In AAA_InitTransaction Initiating authentication to primary server (Svr Grp: LDAP-29) ------------------------------------------------ [31] AAA FSM: In AAA_BindServer [31] AAA_BindServer: Using server: 192.168.109.29 [31] AAA FSM: In AAA_SendMsg User: cisco1 Resp: callback_aaa_task: status = 1, msg = [31] AAA FSM: In aaa_backend_callback aaa_backend_callback: Handle = 31, pAcb = 0x00002aaad352bc80 AAA task: aaa_process_msg(0x00002b4ad7423b20) received message type 1 [31] AAA FSM: In AAA_ProcSvrResp Back End response: ------------------ Authentication Status: 1 (ACCEPT) [31] AAA FSM: In AAA_NextFunction AAA_NextFunction: i_fsm_state = IFSM_PRIM_AUTHENTICATE, auth_status = ACCEPT AAA_NextFunction: authen svr = LDAP-29, author svr = <none>, user pol = Group1, tunn pol = NOACCESS AAA_NextFunction: New i_fsm_state = IFSM_USER_GRP_POLICY, [31] AAA FSM: In AAA_InitTransaction aaai_policy_name_to_server_id(Group1) Got server ID 0 for group policy DB Initiating user group policy lookup (Svr Grp: GROUP_POLICY_DB) ------------------------------------------------ [31] AAA FSM: In AAA_BindServer [31] AAA_BindServer: Using server: <Internal Server> [31] AAA FSM: In AAA_SendMsg User: Group1 Resp: grp_policy_ioctl(0x00002b4ad31fd460, 114698, 0x00002b4ad7423430) grp_policy_ioctl: Looking up Group1 callback_aaa_task: status = 1, msg = [31] AAA FSM: In aaa_backend_callback aaa_backend_callback: Handle = 31, pAcb = 0x00002aaad352bc80 AAA task: aaa_process_msg(0x00002b4ad7423b20) received message type 1 [31] AAA FSM: In AAA_ProcSvrResp Back End response: ------------------ User Group Policy Status: 1 (ACCEPT) [31] AAA FSM: In AAA_NextFunction AAA_NextFunction: i_fsm_state = IFSM_USER_GRP_POLICY, auth_status = ACCEPT AAA_NextFunction: New i_fsm_state = IFSM_TUNN_GRP_POLICY, [31] AAA FSM: In AAA_InitTransaction aaai_policy_name_to_server_id(NOACCESS) Got server ID 0 for group policy DB Initiating tunnel group policy lookup (Svr Grp: GROUP_POLICY_DB) ------------------------------------------------ [31] AAA FSM: In AAA_BindServer [31] AAA_BindServer: Using server: <Internal Server> [31] AAA FSM: In AAA_SendMsg User: NOACCESS Resp: grp_policy_ioctl(0x00002b4ad31fd460, 114698, 0x00002b4ad7423430) grp_policy_ioctl: Looking up NOACCESS callback_aaa_task: status = 1, msg = [31] AAA FSM: In aaa_backend_callback aaa_backend_callback: Handle = 31, pAcb = 0x00002aaad352bc80 AAA task: aaa_process_msg(0x00002b4ad7423b20) received message type 1 [31] AAA FSM: In AAA_ProcSvrResp Back End response: ------------------ Tunnel Group Policy Status: 1 (ACCEPT) [31] AAA FSM: In AAA_NextFunction AAA_NextFunction: i_fsm_state = IFSM_TUNN_GRP_POLICY, auth_status = ACCEPT dACL processing skipped: no ATTR_FILTER_ID found AAA_NextFunction: New i_fsm_state = IFSM_DONE, [31] AAA FSM: In AAA_ProcessFinal Checking simultaneous login restriction (max allowance=3) for user cisco1 Class attribute created from LDAP-Class attribute [31] AAA FSM: In AAA_Callback user attributes: 1 User-Name(1) 6 "cisco1" 2 User-Password(2) 13 (hidden) 3 Group-Policy(4121) 6 "Group1" 4 AAA-AVP-Table(4243) 1639 "g[06][00][00]$[00][00][00]x[01][00][00][8F][01][00][00]" 5 DAP class attribute required(20510) 4 1 6 LDAP-Class(20520) 7 "Group1[00]" User Access-Lists: user_acl[0] = NULL user_acl[1] = NULL user policy attributes: <--- Group-Policy Configuration (Group1) 1 Filter-Id(11) 8 "" 2 Session-Timeout(27) 4 0 3 Idle-Timeout(28) 4 30 4 Simultaneous-Logins(4098) 4 3 5 Primary-DNS(4101) 4 IP: 0.0.0.0 6 Secondary-DNS(4102) 4 IP: 0.0.0.0 7 Primary-WINS(4103) 4 IP: 0.0.0.0 8 Secondary-WINS(4104) 4 IP: 0.0.0.0 9 Tunnelling-Protocol(4107) 4 96 10 Banner(4111) 0 0x00002aaad49daa38 ** Unresolved Attribute ** 11 Split-Tunnel-Inclusion-List(4123) 8 "" 12 Default-Domain-Name(4124) 0 0x00002aaad49daa41 ** Unresolved Attribute ** 13 Secondary-Domain-Name-List(4125) 0 0x00002aaad49daa42 ** Unresolved Attribute ** 14 Split-Tunneling-Policy(4151) 4 0 15 Group-giaddr(4157) 4 IP: 0.0.0.0 16 WebVPN SVC Keepalive interval(4203) 4 20 17 WebVPN SVC Client DPD period(4204) 4 30 18 WebVPN SVC Gateway DPD period(4205) 4 30 19 WebVPN SVC Rekey period(4206) 4 0 20 WebVPN SVC Rekey method(4207) 4 0 21 WebVPN SVC Compression(4208) 4 0 22 WebVPN SVC Firewall Rule(4211) 17 "public#,private#," 23 WebVPN SVC DTLS Compression(4213) 4 0 24 WebVPN SVC DTLS enable(4219) 4 1 25 WebVPN SVC MTU(4221) 4 1406 26 CVC-Modules(4223) 4 "dart" 27 CVC-Profile(4224) 11 "FTD03#user," 28 CVC-Ask(4227) 4 2 29 CVC-Ask-Timeout(4228) 4 0 30 VLAN ID(4236) 4 0 31 WebVPN Idle timeout alert interval(4244) 4 1 32 WebVPN Session timeout alert interval(4245) 4 1 33 List of address pools to assign addresses from(4313) 3 "SSL" 34 SVC ignore DF bit(4326) 4 0 35 Configure the behaviour of DNS queries by the client when Split tunneling is enabled(4328) 4 0 36 Primary-IPv6-DNS(4329) 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 37 Secondary-IPv6-DNS(4330) 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 38 Client Bypass Protocol(4331) 4 0 39 IPv6-Split-Tunneling-Policy(4332) 4 0 User Policy Access-Lists: user_acl[0] = NULL user_acl[1] = NULL tunnel policy attributes: <--- Default Group-Policy attributes (NOACCESS) 1 Filter-Id(11) 8 "" 2 Session-Timeout(27) 4 0 3 Idle-Timeout(28) 4 30 4 Simultaneous-Logins(4098) 4 0 5 Primary-DNS(4101) 4 IP: 0.0.0.0 6 Secondary-DNS(4102) 4 IP: 0.0.0.0 7 Primary-WINS(4103) 4 IP: 0.0.0.0 8 Secondary-WINS(4104) 4 IP: 0.0.0.0 9 Tunnelling-Protocol(4107) 4 96 10 Banner(4111) 0 0x00002aaad2580328 ** Unresolved Attribute ** 11 Group-Policy(4121) 8 "NOACCESS" 12 Split-Tunnel-Inclusion-List(4123) 8 "" 13 Default-Domain-Name(4124) 0 0x00002aaad2580331 ** Unresolved Attribute ** 14 Secondary-Domain-Name-List(4125) 0 0x00002aaad2580332 ** Unresolved Attribute ** 15 Split-Tunneling-Policy(4151) 4 0 16 Group-giaddr(4157) 4 IP: 0.0.0.0 17 WebVPN SVC Keepalive interval(4203) 4 20 18 WebVPN SVC Client DPD period(4204) 4 30 19 WebVPN SVC Gateway DPD period(4205) 4 30 20 WebVPN SVC Rekey period(4206) 4 0 21 WebVPN SVC Rekey method(4207) 4 0 22 WebVPN SVC Compression(4208) 4 0 23 WebVPN SVC Firewall Rule(4211) 17 "public#,private#," 24 WebVPN SVC DTLS Compression(4213) 4 0 25 WebVPN SVC DTLS enable(4219) 4 1 26 WebVPN SVC MTU(4221) 4 1406 27 CVC-Modules(4223) 4 "dart" 28 CVC-Profile(4224) 11 "FTD03#user," 29 CVC-Ask(4227) 4 2 30 CVC-Ask-Timeout(4228) 4 0 31 VLAN ID(4236) 4 0 32 WebVPN Idle timeout alert interval(4244) 4 1 33 WebVPN Session timeout alert interval(4245) 4 1 34 SVC ignore DF bit(4326) 4 0 35 Configure the behaviour of DNS queries by the client when Split tunneling is enabled(4328) 4 0 36 Primary-IPv6-DNS(4329) 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 37 Secondary-IPv6-DNS(4330) 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 38 Client Bypass Protocol(4331) 4 0 39 IPv6-Split-Tunneling-Policy(4332) 4 0 Tunnel Policy Access-Lists: user_acl[0] = NULL user_acl[1] = NULL Auth Status = ACCEPT aaai_internal_cb: handle is 31, pAcb is 0x00002aaad352bc80, pAcb->tq.tqh_first is 0x0000000000000000 AAA API: In aaa_close Checking simultaneous login restriction (max allowance=3) for user cisco1 AAA task: aaa_process_msg(0x00002b4ad7423b20) received message type 2 In aaai_close_session (31) AAA API: In aaa_send_acct_start
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