What Program Has This Port Open
How do I associate an open port with a running program?
eg: what is listening on port 22?# lsof -i :22 COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME sshd 1318 root 3u IPv4 2444 TCP *:ssh (LISTEN) sshd 7665 root 4u IPv4 166534123 TCP netbackup:ssh->router:918 (ESTABLISHED) sshd 19710 root 4u IPv4 554877146 TCP netbackup:ssh->router:853 (ESTABLISHED)
# lsof -i :smtp COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME sendmail 25860 root 4u IPv4 66767220 TCP *:smtp (LISTEN)
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List Connected Users- Test TLS version
- Fix Problems
- Microsoft Teams
- failed to load driver: swrast
- List Logged In Users On Remote System
- List Servers in an AD
- iPerf3 Client
- Useful tshark Examples
- Top Talkers
- Displaying Logs From Console
- pubkey
- Permanent Static Routing
- Add IP Information To issue File
- SSH Pubkey doesn't work
- VM under VMWare Player won't resize screen on drag
- Looping Over Files With Spaces In Their Names
- DHCP Reservations
- PHP 7
- Find Transparent Proxy Systems
- Active Directory with SSSD
- Could Not Format Alternate Root
- Use User's Password As Enable Password
- VPN Status
- Startup Control
- nbtstat for Linux
- Additional Disk
- SSH pubkey authentication
- CLI Restore Configuration
- Example nmcli Commands
Editing: snipsnap-help, Image Macro(Et auditum est, et idcirco ego nunc simulare)
This is a collection of techical information, much of it learned the hard way. Consider it a lab book or a /info directory. I doubt much of it will be of use to anyone else.