Grupo de Tarefas Somente Leitura
Configuração
Para criar usuários no Aggregation Services Router 9000 (ASR9K) com acesso somente leitura, precisamos definir um grupo de tarefas com privilégios somente leitura, criar um grupo de usuários com esse grupo de tarefas e, em seguida, anexar o grupo recém-criado aos usuários.
Criar o Grupo de Tarefas
Estas são as tarefas para as quais o usuário tem permissão para executar 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 !
Criar o grupo de usuários
Os grupos de tarefas são aplicados aos grupos de usuários. Eu criei um grupo de usuários chamado usergroup_read_only
RP/0/RSP1/CPU0:ASR9000# show run usergroup usergroup_read_only usergroup usergroup_ready_only taskgroup taskgroup_read_only ! end-group
Opção 1. Criar um usuário local
Crie um usuário local e aplique o grupo de usuários.
RP/0/RSP1/CPU0:ASR9000# show run username tyler username tyler group usergroup_read_only secret 5 $1$wTwU$CdHKzfRJlJ7kDvJa7NWdi. !
Verificação
Comandos show funcionam
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]
Falha nas tentativas de configuração
Não é possível bloquear o acesso à configuração, mas qualquer tentativa de configuração falhará.
Uma configuração básica como a criação de uma interface de loopback falha.
RP/0/RSP1/CPU0:ASR9000# conf t
RP/0/RSP1/CPU0:ASR9000(config)# int loopback 103
% This command is not authorized
A remoção do BGP também falha.
RP/0/RSP1/CPU0:ASR9000# configure
RP/0/RSP1/CPU0:ASR9000(config)# no router bgp 65530
% This command is not authorized
Verificando Atribuição de Grupo
O usuário conectado é membro de usergroup_read_only
RP/0/RSP1/CPU0:ASR9000# show user group usergroup_read_only
Verificando Atribuição de Tarefa
Este usuário tem acesso somente ao READ para as tarefas 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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