Junior — Middle

How can you determine which ports are available for incoming connections on the current server or computer?

sobes.tech AI

Answer from AI

To determine which ports are available for incoming connections on the current server or computer, you can use the following tools and commands:

netstat (Linux/Windows): shows open ports and related processes.
```
netstat -tuln
```
Options: -t — TCP -u — UDP -l — listening ports -n — show port numbers and IPs without resolving names
ss (Linux): a modern alternative to netstat.
```
ss -tuln
```
lsof (Linux): shows open files and ports.
```
lsof -i -P -n | grep LISTEN
```
PowerShell (Windows):
```
Get-NetTCPConnection -State Listen
```

These commands will help you see which ports are listening for incoming connections, i.e., available for connection.