1242ap开启SSH

xiaoxiao2021-02-27  431

① 配置hostname和ip domain-name:Router#configure terminal Router(config)#hostname TEST-GSR12008TEST-GSR12008(config)#ip domain-name jx.cn.net② 配置登录用户名和密码(以本地认证为例):TEST-GSR12008(config)#username test password 0 test注:添加一个用户:test,口令:testTEST-GSR12008(config)#line vty 0 4TEST-GSR12008(config-line)#login local在这两部分做完以后,用show run命令就能够看到:hostname TEST-GSR12008!boot system flash gsr-k3p-mz.120-14.S.binenable secret 5 $1$DMyW$gdSIOkCr7p8ytwcRwtnJG.enable password 7 094F47C31A0A!username test password 7 0835495D1Dclock timezone PRC 16redundancymain-cpuauto-sync startup-config!!!!ip subnet-zerono ip fingerip domain-name jx.cn.netip name-server 202.101.224.68ip name-server 202.101.226.68!③ 配置SSH服务:TEST-GSR12008(config)#crypto key generate rsaThe name for the keys will be: TEST-GSR12008.jx.cn.net注:SSH的关键字名就是hostname + . +ip domain-nameChoose the size of the key modulus in the range of 360 to 2048 for yourGeneral Purpose Keys. Choosing a key modulus greater than 512 may takea few minutes.How many bits in the modulus [512]: 注:选择加密位数,用默认就行了Generating RSA keys ...[OK]TEST-GSR12008(config)#endTEST-GSR12008#writeBuilding configuration...这时候用show run命令可以看到:ip subnet-zerono ip fingerip domain-name jx.cn.netip name-server 202.101.224.68ip name-server 202.101.226.68ip ssh time-out 120ip ssh authentication-retries 3!用命令show ip ssh也能看到:SSH Enabled - version 1.5Authentication timeout: 120 secs; Authentication retries: 3现在SSH服务已经启动,如果需要停止SSH服务,用以下命令:TEST-GSR12008(config)#crypto key zeroize rsa④设置SSH参数配置好了SSH之后,通过show run命令我们看到SSH默认的参数:超时限定为120秒,认证重试次数为3次,可以通过下面命令进行修改:TEST-GSR12008(config)#ip ssh {[time-out seconds]} | [authentication-retries interger]}如果要把超时限定改为180秒,则应该用:TEST-GSR12008(config)# ip ssh time-out 180如果要把重试次数改成5次,则应该用:TEST-GSR12008(config)# ip ssh authentication-retries 5这样,SSH已经在路由器上配置成功了,就能够通过SSH进行安全登录了。
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