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Port 654 (aodv)

IANA assigns port 654 to aodv: AODV.

Well-known (system) port, 0-1023 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
aodv TCP AODV Charles Perkins -
aodv UDP AODV Charles Perkins -

Check what is listening on port 654

Linux: is anything listening on TCP 654?
sudo ss -tlnp 'sport = :654'
Linux: UDP 654
sudo ss -ulnp 'sport = :654'
Linux / macOS: which process owns the port
sudo lsof -nP -i :654
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':654 '
Windows (Command Prompt)
netstat -ano | findstr :654
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 654 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 654
From Windows
Test-NetConnection HOST -Port 654
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 654

Block port 654 in the firewall

ufw
sudo ufw deny 654/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 654 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 654 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 654' -Direction Inbound -Protocol TCP -LocalPort 654 -Action Block
ufw
sudo ufw deny 654/udp
iptables
sudo iptables -A INPUT -p udp --dport 654 -j DROP
nftables
sudo nft add rule inet filter input udp dport 654 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 654' -Direction Inbound -Protocol UDP -LocalPort 654 -Action Block

Related ports

652hello-port653repscmd655tinc656spmp

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