- 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 3190: ConServR Proxy
Port 3190 is assigned by IANA to csvr-proxy (ConServR Proxy).
3190
How csvr-proxy 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 3190 dangerous?
We have no specific security note for port 3190. Its risk depends on the program actually listening on it. General advice for vpn, tunnels & proxies services:
IANA registry entries for port 3190
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| csvr-proxy | 3190 | TCP, UDP | ConServR Proxy | - | - |
// source: IANA service name and port number registry
Which program uses port 3190, and is it reachable?
Linux
sudo ss -ltnup 'sport = :3190' # process listening on 3190
sudo lsof -nP -i :3190macOS
sudo lsof -nP -i :3190
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3190 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 3190 netstat -ano | findstr :3190
From another machine
nmap -p 3190 -sV <host> sudo nmap -sU -p 3190 <host> nc -zv <host> 3190
Block it in the firewall
sudo ufw deny 3190/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 3190" -Direction Inbound -LocalPort 3190 -Protocol TCP -Action Block # Windows
What is port 3190 used for?
Port 3190 is assigned by IANA to csvr-proxy (ConServR Proxy).
Is port 3190 TCP or UDP?
Port 3190 is registered for TCP and UDP.
Is it safe to open port 3190?
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 3190 is open?
On Linux run "ss -ltnup 'sport = :3190'", on macOS "lsof -nP -i :3190", and on Windows "netstat -ano | findstr :3190" to see the local process. From another machine, "nmap -p 3190 <host>" shows whether it is reachable.