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Port 2063 (icg-bridge)

IANA assigns port 2063 to icg-bridge: ICG Bridge Port.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
icg-bridge TCP ICG Bridge Port - -
icg-bridge UDP ICG Bridge Port - -

Check what is listening on port 2063

Linux: is anything listening on TCP 2063?
sudo ss -tlnp 'sport = :2063'
Linux: UDP 2063
sudo ss -ulnp 'sport = :2063'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2063
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2063 '
Windows (Command Prompt)
netstat -ano | findstr :2063
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2063 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2063
From Windows
Test-NetConnection HOST -Port 2063
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2063

Block port 2063 in the firewall

ufw
sudo ufw deny 2063/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2063 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2063 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2063' -Direction Inbound -Protocol TCP -LocalPort 2063 -Action Block
ufw
sudo ufw deny 2063/udp
iptables
sudo iptables -A INPUT -p udp --dport 2063 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2063 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2063' -Direction Inbound -Protocol UDP -LocalPort 2063 -Action Block

Related ports

2061netmount2062icg-swp2064icg-iprelay2065dlsrpn

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