op_mode: T6181: A feature for checking ports (backport #4038)

[mergify]

Change Summary

Added op mode command to scan specific host for open ports

execute port-scan host <target> [ <Options> ]

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Code style update (formatting, renaming)
• Refactoring (no functional changes)
• Migration from an old Vyatta component to vyos-1x, please link to related PR inside obsoleted component
• Other (please describe):

Related Task(s)

• https://vyos.dev/T6181

Related PR(s)

Component(s) name

op_mode: execute port-scan

Proposed changes

How to test

op mode command:

vyos@vyos:~$ execute port-scan host 192.0.2.2
Starting Nmap 7.93 ( https://nmap.org ) at 2024-09-05 08:18 UTC
Nmap scan report for 192.0.2.2
Host is up (0.0018s latency).
Not shown: 65533 closed tcp ports (conn-refused)
PORT    STATE SERVICE
22/tcp  open  ssh
443/tcp open  https

Nmap done: 1 IP address (1 host up) scanned in 17.84 seconds

With options:

vyos@vyos:~$ execute port-scan host 192.0.2.2
Possible completions:
  <Enter>               Execute the current command
  ipv6                  Port scan options
  port
  skip-ping
  tcp
  udp

vyos@vyos:~$ execute port-scan host 192.0.2.2 skip-ping tcp port 22,100-105,440-450
Starting Nmap 7.93 ( https://nmap.org ) at 2024-09-05 08:20 UTC
Nmap scan report for 192.0.2.2
Host is up (0.0010s latency).

PORT    STATE  SERVICE
22/tcp  open   ssh
100/tcp closed newacct
101/tcp closed hostname
102/tcp closed iso-tsap
103/tcp closed gppitnp
104/tcp closed acr-nema
105/tcp closed csnet-ns
440/tcp closed sgcp
441/tcp closed decvms-sysmgt
442/tcp closed cvc_hostd
443/tcp open   https
444/tcp closed snpp
445/tcp closed microsoft-ds
446/tcp closed ddm-rdb
447/tcp closed ddm-dfm
448/tcp closed ddm-ssl
449/tcp closed as-servermap
450/tcp closed tserver

Nmap done: 1 IP address (1 host up) scanned in 13.04 seconds

Smoketest result

Checklist:

• I have read the CONTRIBUTING document
• I have linked this PR to one or more Phabricator Task(s)
• I have run the components SMOKETESTS if applicable
• My commit headlines contain a valid Task id
• My change requires a change to the documentation
• I have updated the documentation accordingly

---

This is an automatic backport of pull request #4038 done by [Mergify](https://mergify.com).

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