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Port 8989 (sunwebadmins)

IANA assigns port 8989 to sunwebadmins: Sun Web Server SSL Admin Service.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
sunwebadmins TCP Sun Web Server SSL Admin Service Jyri J Virkki -
sunwebadmins UDP Sun Web Server SSL Admin Service Jyri J Virkki -

Registry dates for this port: registered 2005-12.

Check what is listening on port 8989

Linux: is anything listening on TCP 8989?
sudo ss -tlnp 'sport = :8989'
Linux: UDP 8989
sudo ss -ulnp 'sport = :8989'
Linux / macOS: which process owns the port
sudo lsof -nP -i :8989
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':8989 '
Windows (Command Prompt)
netstat -ano | findstr :8989
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 8989 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 8989
From Windows
Test-NetConnection HOST -Port 8989
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 8989

Block port 8989 in the firewall

ufw
sudo ufw deny 8989/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 8989 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 8989 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 8989' -Direction Inbound -Protocol TCP -LocalPort 8989 -Action Block
ufw
sudo ufw deny 8989/udp
iptables
sudo iptables -A INPUT -p udp --dport 8989 -j DROP
nftables
sudo nft add rule inet filter input udp dport 8989 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 8989' -Direction Inbound -Protocol UDP -LocalPort 8989 -Action Block

Related ports

8980nod-provider8981nod-client8990http-wmap8991https-wmap

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