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Port 116 (ansanotify)

IANA assigns port 116 to ansanotify: ANSA REX Notify.

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

IANA assignment

Service nameProtoDescriptionAssigneeReference
ansanotify TCP ANSA REX Notify Nicola J Howarth -
ansanotify UDP ANSA REX Notify Nicola J Howarth -

Check what is listening on port 116

Linux: is anything listening on TCP 116?
sudo ss -tlnp 'sport = :116'
Linux: UDP 116
sudo ss -ulnp 'sport = :116'
Linux / macOS: which process owns the port
sudo lsof -nP -i :116
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':116 '
Windows (Command Prompt)
netstat -ano | findstr :116
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 116 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 116
From Windows
Test-NetConnection HOST -Port 116
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 116

Block port 116 in the firewall

ufw
sudo ufw deny 116/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 116 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 116 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 116' -Direction Inbound -Protocol TCP -LocalPort 116 -Action Block
ufw
sudo ufw deny 116/udp
iptables
sudo iptables -A INPUT -p udp --dport 116 -j DROP
nftables
sudo nft add rule inet filter input udp dport 116 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 116' -Direction Inbound -Protocol UDP -LocalPort 116 -Action Block

Related ports

113Ident115sftp117uucp-path118sqlserv

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