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Port 2064 (icg-iprelay)

IANA assigns port 2064 to icg-iprelay: ICG IP Relay Port.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
icg-iprelay TCP ICG IP Relay Port Steve Quintana -
icg-iprelay UDP ICG IP Relay Port Steve Quintana -

Check what is listening on port 2064

Linux: is anything listening on TCP 2064?
sudo ss -tlnp 'sport = :2064'
Linux: UDP 2064
sudo ss -ulnp 'sport = :2064'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2064
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2064 '
Windows (Command Prompt)
netstat -ano | findstr :2064
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2064 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2064
From Windows
Test-NetConnection HOST -Port 2064
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2064

Block port 2064 in the firewall

ufw
sudo ufw deny 2064/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2064 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2064 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2064' -Direction Inbound -Protocol TCP -LocalPort 2064 -Action Block
ufw
sudo ufw deny 2064/udp
iptables
sudo iptables -A INPUT -p udp --dport 2064 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2064 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2064' -Direction Inbound -Protocol UDP -LocalPort 2064 -Action Block

Related ports

2062icg-swp2063icg-bridge2065dlsrpn2066aura

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