Grupo de tareas de sólo lectura
Configuración
Para crear usuarios en el router de servicios de agregación 9000 (ASR9K) con acceso de solo lectura, necesitamos definir un grupo de tareas con privilegios de solo lectura, crear un grupo de usuarios con ese grupo de tareas y, a continuación, adjuntar el grupo recién creado a los usuarios.
Crear el grupo de tareas
Éstas son las tareas para las que el usuario puede ejecutar comandos show.
RP/0/RSP1/CPU0:ASR9000# show run taskgroup taskgroup_read_only taskgroup taskgroup_read_only task read fr task read li task read aaa task read acl task read atm task read bfd task read bgp task read cdp task read cef task read cgn task read eem task read nps task read pbr task read ppp task read qos task read rib task read rip task read sbc task read ancp task read bcdl task read boot task read diag task read dwdm task read hdlc task read hsrp task read ipv4 task read ipv6 task read isis task read lisp task read lpts task read ospf task read ouni task read rcmd task read snmp task read vlan task read vpdn task read vrrp task read admin task read eigrp task read l2vpn task read bundle task read crypto task read fabric task read static task read sysmgr task read system task read tunnel task read drivers task read logging task read monitor task read mpls-te task read netflow task read network task read pos-dpt task read firewall task read mpls-ldp task read pkg-mgmt task read call-home task read fault-mgr task read interface task read inventory task read multicast task read route-map task read sonet-sdh task read transport task read ext-access task read filesystem task read tty-access task read config-mgmt task read ip-services task read mpls-static task read route-policy task read host-services task read basic-services task read config-services task read ethernet-services !
Crear el grupo de usuarios
Los grupos de tareas se aplican a los grupos de usuarios. He creado un grupo de usuarios llamado usergroup_read_only
RP/0/RSP1/CPU0:ASR9000# show run usergroup usergroup_read_only usergroup usergroup_ready_only taskgroup taskgroup_read_only ! end-group
Opción 1. Crear un usuario local
Cree un usuario local y aplique el grupo de usuarios.
RP/0/RSP1/CPU0:ASR9000# show run username tyler username tyler group usergroup_read_only secret 5 $1$wTwU$CdHKzfRJlJ7kDvJa7NWdi. !
Verificación
Show commands work
RP/0/RSP1/CPU0:ASR9000# show clock 13:42:03.811 UTC Thu Jun 30 2016
RP/0/RSP1/CPU0:ASR9000# show run Building configuration... !! IOS XR Configuration 5.1.3 ! hostname ASR9000 [output omitted]
Fallo de intentos de configuración
No es posible bloquear el acceso para configurar, pero cualquier intento de configuración fallará.
Una configuración básica como la creación de una interfaz de loopback falla.
RP/0/RSP1/CPU0:ASR9000# conf t
RP/0/RSP1/CPU0:ASR9000(config)# int loopback 103
% This command is not authorized
La eliminación de BGP también falla.
RP/0/RSP1/CPU0:ASR9000# configure
RP/0/RSP1/CPU0:ASR9000(config)# no router bgp 65530
% This command is not authorized
Comprobación de asignación de grupo
El usuario que inició sesión es miembro de usergroup_read_only
RP/0/RSP1/CPU0:ASR9000# show user group usergroup_read_only
Comprobación de la asignación de tareas
Este usuario sólo tiene acceso a READ para las tareas especificadas.
RP/0/RSP1/CPU0:ASR9000# show user tasks Task: aaa : READ Task: acl : READ Task: admin : READ Task: ancp : READ Task: atm : READ Task: basic-services : READ Task: bcdl : READ Task: bfd : READ Task: bgp : READ Task: boot : READ Task: bundle : READ Task: call-home : READ Task: cdp : READ Task: cef : READ Task: cgn : READ Task: config-mgmt : READ Task: config-services : READ Task: crypto : READ Task: diag : READ Task: drivers : READ Task: dwdm : READ Task: eem : READ Task: eigrp : READ Task: ethernet-services : READ Task: ext-access : READ Task: fabric : READ Task: fault-mgr : READ Task: filesystem : READ Task: firewall : READ Task: fr : READ Task: hdlc : READ Task: host-services : READ Task: hsrp : READ Task: interface : READ Task: inventory : READ Task: ip-services : READ Task: ipv4 : READ Task: ipv6 : READ Task: isis : READ Task: l2vpn : READ Task: li : READ Task: lisp : READ Task: logging : READ Task: lpts : READ Task: monitor : READ Task: mpls-ldp : READ Task: mpls-static : READ Task: mpls-te : READ Task: multicast : READ Task: netflow : READ Task: network : READ Task: nps : READ Task: ospf : READ Task: ouni : READ Task: pbr : READ Task: pkg-mgmt : READ Task: pos-dpt : READ Task: ppp : READ Task: qos : READ Task: rcmd : READ Task: rib : READ Task: rip : READ Task: route-map : READ Task: route-policy : READ Task: sbc : READ Task: snmp : READ Task: sonet-sdh : READ Task: static : READ Task: sysmgr : READ Task: system : READ Task: transport : READ Task: tty-access : READ Task: tunnel : READ Task: vlan : READ Task: vpdn : READ Task: vrrp : READ
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