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Port 3155 (jpegmpeg)

IANA assigns port 3155 to jpegmpeg: JpegMpeg Port.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
jpegmpeg TCP JpegMpeg Port Richard Bassous -
jpegmpeg UDP JpegMpeg Port Richard Bassous -

Check what is listening on port 3155

Linux: is anything listening on TCP 3155?
sudo ss -tlnp 'sport = :3155'
Linux: UDP 3155
sudo ss -ulnp 'sport = :3155'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3155
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3155 '
Windows (Command Prompt)
netstat -ano | findstr :3155
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3155 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3155
From Windows
Test-NetConnection HOST -Port 3155
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3155

Block port 3155 in the firewall

ufw
sudo ufw deny 3155/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3155 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3155 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3155' -Direction Inbound -Protocol TCP -LocalPort 3155 -Action Block
ufw
sudo ufw deny 3155/udp
iptables
sudo iptables -A INPUT -p udp --dport 3155 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3155 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3155' -Direction Inbound -Protocol UDP -LocalPort 3155 -Action Block

Related ports

3153s8-client-port3154ccmrmi3156indura3157lsa-comm

All port numbers · Open port checker
Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.