1、关闭未用服务
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undo dhcp enable
undo ip http server enable
undo ip https server enable
undo ndp 
undo ftp server port
undo tftp client-source
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2、设置banner
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header  login  information  % %
header  shell  information   % %
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3、不存在默认路由
删除默认路由,配置明细路由
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 undo ip route-static 0.0.0.0 0.0.0.0 *****
 ip route-static X.X.0.0 255.255.0.0 ****
 ip route-static X.0.0.0 255.0.0.0 ******
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4、创建ssh用户,创建源限制登录acl,在接口下应用用户绑定acl,设置con口
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aaa
 local-user *** password cipher ***
 local-user *** privilege level 15
 local-user *** service-type terminal ssh
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 ssh server enable 或 stelnet server enable
 ssh user *** authentication-type password
 rsa local-key-pair create
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acl number 3500
rule 5 permit ip source **** 0
 rule 20 deny ip
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ssh server acl 3500      #应用acl或在用户接口下应用
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user-interface vty 0 15
 undo set authentication password
 authentication-mode aaa
 user privilege level 3
 idle-timeout 5 0
 protocol inbound ssh
 acl 3500 inbound
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user-interface aux 0
 authentication-mode aaa 
 idle-timeout 5 0
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账号创建完成,通过ssh登录后:
undo telnet server enable   #关闭telnet功能
aaa
undo local-user admin      #注销原来账号
undo ssh user admin        #注销原来的ssh
5、日志记录:
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display logbuffer   #查询存在日志信息即可:
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6.时钟
ntp-service  unicast-server **** source-interface  Vlanif 10/20
undo ntp-service  server  disable 
clock timezone  beijing add 08:00:00
7、业务访问控制列表
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acl number 3000(acl明细参考访问控制列表细化,厂站不同,acl不同)
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业务acl创建完成,需应用于厂站交换机业务接口(交换机上行互联口不可应用)
#例:
interface GigabitEthernet1/0/1
 packet-filter 3000 inbound
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8、空闲端口关闭
#例:
interface GigabitEthernet1/0/1
 shutdown
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加固完成进行配置保存:save
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