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Sample Commands

Table 10.2 is a summary of many of the security-related Cisco commands. The list in this table is by no means comprehensive.
Table 10.2 Security-Related Cisco Commands
CommandDescription
enable secretConfigure a privileged router access password.
service password-encryptionProvide a minimum level of protection for configured passwords.
no service tcp-small-servers
no service udp-small-servers
Prevent abuse of the small services for denial of service or other attacks.
no service fingerAvoid releasing user information to possible attackers.
no cdp running
no cdp enable
Avoid releasing information about the router to directly-connected devices.
no ntp enablePrevent attacks against the Network Time Protocol (NTP) service.
no ip directed-broadcast

  

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