Port 29118 (sgsap)

IANA assigns port 29118 to sgsap: SGsAP in 3GPP.

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference

sgsap SCTP SGsAP in 3GPP 3GPP Specifications -

Registry dates for this port: registered 2009-06-11.

Linux: is anything listening on TCP 29118?

sudo ss -tlnp 'sport = :29118'

Linux / macOS: which process owns the port

sudo lsof -nP -i :29118

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':29118 '

Windows (Command Prompt)

netstat -ano | findstr :29118

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 29118 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 29118

From Windows

Test-NetConnection HOST -Port 29118

ufw

sudo ufw deny 29118/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 29118 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 29118 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 29118' -Direction Inbound -Protocol TCP -LocalPort 29118 -Action Block

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