HTTPfy

Port 2655 (unglue)

IANA assigns port 2655 to unglue: UNIX Nt Glue.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
unglue TCP UNIX Nt Glue Peter Santoro -
unglue UDP UNIX Nt Glue Peter Santoro -

Check what is listening on port 2655

Linux: is anything listening on TCP 2655?
sudo ss -tlnp 'sport = :2655'
Linux: UDP 2655
sudo ss -ulnp 'sport = :2655'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2655
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2655 '
Windows (Command Prompt)
netstat -ano | findstr :2655
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2655 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2655
From Windows
Test-NetConnection HOST -Port 2655
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2655

Block port 2655 in the firewall

ufw
sudo ufw deny 2655/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2655 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2655 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2655' -Direction Inbound -Protocol TCP -LocalPort 2655 -Action Block
ufw
sudo ufw deny 2655/udp
iptables
sudo iptables -A INPUT -p udp --dport 2655 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2655 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2655' -Direction Inbound -Protocol UDP -LocalPort 2655 -Action Block

Related ports

2653sonus2654corel-vncadmin, corel_vncadmin2656kana2657sns-dispatcher

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