Security reinforcement for Cisco4506
1. Start SSH Login
Ct1__snl_00006in (config) # ip domain-name n4506
Ct1__snl_00006in (config) # ip ssh time-out 60
Ct10000_snl_rj6in (config) # ip ssh authentication-retries 5
Ct1__snl_00006in (config) # access-list 1302 permit 134.96.82.250 log
Ct1__snl_rj6in (config) # access-list 1302 permit 192.98.100.45
Ct10000_snl_rj6in (config) # access-list 1302 permit 192.96.70.48
Ct1__snl_rj6in (config) # access-list 1302 permit 192.96.70.49
Ct1__snl_00006in (config) # line vty 0 4
Ct1__snl_00006in (config-line) # transport input ssh
Ct1__snl_00006in (config-line) # login
Ct1__snl_00006in (config-line) # end
Ct10000_snl_rj6in (config) # aaa new-model
Ct10000_snl_rj6in (config) # aaa authentication login default local
Ct1__snl_rj6in (config) # username hx10 pass asei4n123a98w4
Ct1__snl_00006in (config) # line vty
Ct1__snl_00006in (config) # line vty 0 4
Ct1__snl_00006in (config-line) # login authentication default
Ct1__snl_00006in (config-line) # access-class 1302 in
Ct1__snl_00006in (config-line) # end
Ct1__snl_00006in (config) # no ip source-route
Ct10000_snl_rj6in (config) # no ip http server
Ct1__snl_rj6in (config) # no cdp run
Ct1__snl_00006in (config) # ntp server 192.168.0.22
Ct10000_snl_rj6in (config) # no service tcp-small-servers
Ct10000_snl_rj6in (config) # no service udp-small-servers
Ct10000_snl_rj6in (config) # no service finger
Ct10000_snl_rj6in (config) # banner exec c
Enter TEXT message. End with the character 'C '.
Your IP Address has been logged, if you are not administrator, please leave now !!! C
Ct1__snl_rj6in (config) # int range vlan 5, vlan 10, vlan 25, vlan 30
Ct1__snl_00006in (config-if-range) # no ip directed-broadcast
Ct1__snl_rj6in (config-if-range) # no ip proxy-arp
Logging on
Logging facility local7
Logging 192.168.0.121
3750 if the vswitch does not have ssh, you can enable the AAA and source address logon restrictions.
Login block-for 60 attempts 5 within 60 network device lock settings
Spanning-tree vlan xx root primary switch device stp Optimization