Add visual guardrails to destructive keywords to force a second look before pressing Enter: reload delete write erase crypto key zeroize shutdown
: \b(?:[0-9]1,3\.)3[0-9]1,3\b (Highlights any standard IP address in your configurations). xshell highlight sets cisco
| | Regex Pattern | Color Style | | :--- | :--- | :--- | | Private IP | \b(10\.\d1,3\.\d1,3\.\d1,3)\b | White on Dark Blue | | Public IP | \b(?!(10\.|172\.(1[6-9]|2[0-9]|3[0-1])\.|192\.168\.))(\d1,3\.\d1,3\.\d1,3\.\d1,3)\b | White on Red | Add visual guardrails to destructive keywords to force