Command Reference Flashcards
Cisco security feature that can assist a network administrator in securing a system
auto secure
Prevents unauthorized individuals from viewing passwords in plain text in configuration files
service password-encryption
Set the minimum length of all passwords ton characters
security passwords min-length n
After n login attempts within s seconds, block further login attempts for t seconds
login block for t attempts n within s
After n minutes of idle time, the user will be logged out of VTY or console lines
exec-timeout n
Configures the router to use the local database to authenticate remote users
login local
Configures lines to only use SSH as the remote access protocol
transport input SSH
Sets the domain name to example.com on the router
ip domain-name example.com
Configures admin as the user with password cisco
username admin password cisco
note: if “most secure means” or “encrypted” requested:
username admin secret cisco
On a Cisco device, this command returns a list of hops from the source to a destination IP address 10.1.0.1
traceroute 10.1.0.1
On a Windows PC, this command returns a list of hops from the source to a destination IP address 10.1.0.1
tracert 10.1.0.1
Displays the current router configuration stored in RAM
show running-config
Displays all the interface information on the router
show interfaces
Displays the ARP cache on the router
show arp
also: show ip arp
Displays the IPv4 routing table on the router
show ip route
