- Patch VPN gateways quickly: they are a top initial access target.
- Use certificates or MFA rather than shared secrets.
- Investigate unexpected tunnels and proxies: they are also attacker tools.
Port 2790: PLG Proxy
Port 2790 is assigned by IANA to plgproxy (PLG Proxy).
2790
How plgproxy works
VPN, tunnels & proxiesTraffic is wrapped in a tunnel between the two ends, so the network in between only sees the tunnel.
- Transport
- TCP · UDP
- Exposure risk
- not rated depends on the program listening
- Encryption
- Unknownnot stated by the registry
- IANA status
- Assigned1 registered service
- Range
- Registered (1024-49151)
- Category
- VPN, tunnels & proxies
Is port 2790 dangerous?
We have no specific security note for port 2790. Its risk depends on the program actually listening on it. General advice for vpn, tunnels & proxies services:
IANA registry entries for port 2790
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| plgproxy | 2790 | TCP, UDP | PLG Proxy | - | - |
// source: IANA service name and port number registry
Which program uses port 2790, and is it reachable?
Linux
sudo ss -ltnup 'sport = :2790' # process listening on 2790
sudo lsof -nP -i :2790macOS
sudo lsof -nP -i :2790
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2790 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 2790 netstat -ano | findstr :2790
From another machine
nmap -p 2790 -sV <host> sudo nmap -sU -p 2790 <host> nc -zv <host> 2790
Block it in the firewall
sudo ufw deny 2790/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 2790" -Direction Inbound -LocalPort 2790 -Protocol TCP -Action Block # Windows
What is port 2790 used for?
Port 2790 is assigned by IANA to plgproxy (PLG Proxy).
Is port 2790 TCP or UDP?
Port 2790 is registered for TCP and UDP.
Is it safe to open port 2790?
It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Patch VPN gateways quickly: they are a top initial access target.
How do I check if port 2790 is open?
On Linux run "ss -ltnup 'sport = :2790'", on macOS "lsof -nP -i :2790", and on Windows "netstat -ano | findstr :2790" to see the local process. From another machine, "nmap -p 2790 <host>" shows whether it is reachable.