Port 8301 (Consul Serf LAN)

Consul LAN gossip between agents (8302 is WAN gossip, 8300 server RPC).

Registered (user) port, 1024-49151 TCPUDP Network infrastructure Do not expose to the internet

What port 8301 is used for

Consul LAN gossip between agents (8302 is WAN gossip, 8300 server RPC).

Do not expose to the internet. Enable gossip encryption; agents only.

Service nameProtoDescriptionAssigneeReference

amberon TCP Amberon PPC/PPS Ronald Snyder -

amberon UDP Amberon PPC/PPS Ronald Snyder -

Registry dates for this port: registered 2006-03.

Linux: is anything listening on TCP 8301?

sudo ss -tlnp 'sport = :8301'

Linux: UDP 8301

sudo ss -ulnp 'sport = :8301'

Linux / macOS: which process owns the port

sudo lsof -nP -i :8301

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':8301 '

Windows (Command Prompt)

netstat -ano | findstr :8301

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 8301 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 8301

From Windows

Test-NetConnection HOST -Port 8301

UDP probe (no reply does not prove it is closed)

nc -vzu -w 5 HOST 8301

ufw

sudo ufw deny 8301/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 8301 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 8301 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 8301' -Direction Inbound -Protocol TCP -LocalPort 8301 -Action Block

ufw

sudo ufw deny 8301/udp

iptables

sudo iptables -A INPUT -p udp --dport 8301 -j DROP

nftables

sudo nft add rule inet filter input udp dport 8301 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block UDP 8301' -Direction Inbound -Protocol UDP -LocalPort 8301 -Action Block

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.