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Port 5425 (br-channel)

IANA assigns port 5425 to br-channel: Beyond Remote Command Channel.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
br-channel TCP Beyond Remote Command Channel Michael Berg -
br-channel UDP Beyond Remote Command Channel Michael Berg -

Registry dates for this port: registered 2005-08.

Check what is listening on port 5425

Linux: is anything listening on TCP 5425?
sudo ss -tlnp 'sport = :5425'
Linux: UDP 5425
sudo ss -ulnp 'sport = :5425'
Linux / macOS: which process owns the port
sudo lsof -nP -i :5425
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':5425 '
Windows (Command Prompt)
netstat -ano | findstr :5425
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5425 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 5425
From Windows
Test-NetConnection HOST -Port 5425
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 5425

Block port 5425 in the firewall

ufw
sudo ufw deny 5425/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 5425 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 5425 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 5425' -Direction Inbound -Protocol TCP -LocalPort 5425 -Action Block
ufw
sudo ufw deny 5425/udp
iptables
sudo iptables -A INPUT -p udp --dport 5425 -j DROP
nftables
sudo nft add rule inet filter input udp dport 5425 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 5425' -Direction Inbound -Protocol UDP -LocalPort 5425 -Action Block

Related ports

5423virtualuser5424beyond-remote5426devbasic5427sco-peer-tta

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