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Port 9617 (erunbook-server, erunbook_server)

IANA assigns port 9617 to erunbook-server, erunbook_server: eRunbook Server IANA assigned this well-formed service name as a replacement for "erunbook_server"..

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference
erunbook-server TCP eRunbook Server IANA assigned this well-formed service name as a replacement for "erunbook_server". Gerhard Wagner -
erunbook_server TCP eRunbook Server
This entry is an alias to "erunbook-server". 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 9617

Linux: is anything listening on TCP 9617?
sudo ss -tlnp 'sport = :9617'
Linux / macOS: which process owns the port
sudo lsof -nP -i :9617
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':9617 '
Windows (Command Prompt)
netstat -ano | findstr :9617
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 9617 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 9617
From Windows
Test-NetConnection HOST -Port 9617

Block port 9617 in the firewall

ufw
sudo ufw deny 9617/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 9617 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 9617 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 9617' -Direction Inbound -Protocol TCP -LocalPort 9617 -Action Block

Related ports

9614iadt-tls9616erunbook-agent, erunbook_agent9618condor9628odbcpathway

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