cisco-banner配置

设置登录时显示的警示性信息-bannerCisco配置banner消息旗标（banner）消息可以用来警示入侵者。Router(config)#banner?LINEcbanner-textc,where'c'isadelimitingcharacterexecSetEXECprocesscreationbannerincomingSetincomingterminallinebannerloginSetloginbannermotdSetMessageoftheDaybannerprompt-timeoutSetMessageforloginauthenticationtimeoutslip-pppSetMessageforSLIP/PPP缺省时旗标是关闭的。旗标命令一般包括5个不同的命令：●bannerexec－－规定并启用一个消息，当在路由器上创建一个EXEC过程时显示（当用户认证成功登陆后显示）。●bannerincoming－－规定并启用一个旗标，当有来自网络中某台主机连接到终端链路时显示。●bannerlogin－－规定并启用一个旗标，在用户名和口令登录提示之前显示。●bannermotd－－规定并启用一个MOTD（message-of-the-day）旗标。●bannerslip-ppp－－规定并启用一个旗标，当SLIP或PPP连接建立时显示。login和motd的banner只需要做一个，exec在认证成功后显示配置:Router(config)#bannermotd#warning.-----------------------------------------------------------------------WARNING:Youareconnectedtotheciscosystems,Incorporatednetwork.Unauthorizedaccessanduseofthisnetworkwillbevigorouslyprosecuted.-----------------------------------------------------------------------#Router1#configureterminalEnterconfigurationcommands,oneperline.EndwithCNTL/Z.Router1(config)#bannerexec#Thisisanexecbanner#Router1(config)#bannerlogin#Thisisaloginbanner#Router1(config)#bannermotd$Thisisamotdbanner$Router1(config)#endRouter1#注释不用使用welcome之类的字样，下面是一个路由器登录banner做参考bannermotd#*************************************************************WARNING!***WARNING!***WARNING!***WARNING!***WARNING!*************************************************************#显示的区别CISCO(config)#bannerexec#EnterTEXTmessage.Endwiththecharacter'#'.It'sexec#GOAL(config)#bannerlogin#EnterTEXTmessage.Endwiththecharacter'#'.It'slogin#GOAL(config)#bannermotd#EnterTEXTmessage.Endwiththecharacter'#'.It'smotd#It'smotdIt'sloginUserAccessVerificationPassword:Password:It'sexecWISCOMenPassword:WISCOM#