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Port 9616 (erunbook-agent, erunbook_agent)

IANA assigns port 9616 to erunbook-agent, erunbook_agent: eRunbook Agent IANA assigned this well-formed service name as a replacement for "erunbook_agent"..

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference
erunbook-agent TCP eRunbook Agent IANA assigned this well-formed service name as a replacement for "erunbook_agent". Gerhard Wagner -
erunbook_agent TCP eRunbook Agent
This entry is an alias to "erunbook-agent". This entry is now historic, not usable for use with many common service discovery mechanisms. Gerhard Wagner -

Registry dates for this port: registered 2009-03-10.

Check what is listening on port 9616

Linux: is anything listening on TCP 9616?
sudo ss -tlnp 'sport = :9616'
Linux / macOS: which process owns the port
sudo lsof -nP -i :9616
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':9616 '
Windows (Command Prompt)
netstat -ano | findstr :9616
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 9616 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 9616
From Windows
Test-NetConnection HOST -Port 9616

Block port 9616 in the firewall

ufw
sudo ufw deny 9616/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 9616 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 9616 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 9616' -Direction Inbound -Protocol TCP -LocalPort 9616 -Action Block

Related ports

9612streamcomm-ds9614iadt-tls9617erunbook-server, erunbook_server9618condor

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