Port 8899 (ospf-lite)

IANA assigns port 8899 to ospf-lite.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference

ospf-lite TCP ospf-lite Matthew Thomas -

ospf-lite UDP ospf-lite Matthew Thomas -

Registry dates for this port: registered 2008-01-07.

Linux: is anything listening on TCP 8899?

sudo ss -tlnp 'sport = :8899'

Linux: UDP 8899

sudo ss -ulnp 'sport = :8899'

Linux / macOS: which process owns the port

sudo lsof -nP -i :8899

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':8899 '

Windows (Command Prompt)

netstat -ano | findstr :8899

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 8899 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 8899

From Windows

Test-NetConnection HOST -Port 8899

UDP probe (no reply does not prove it is closed)

nc -vzu -w 5 HOST 8899

ufw

sudo ufw deny 8899/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 8899 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 8899 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 8899' -Direction Inbound -Protocol TCP -LocalPort 8899 -Action Block

ufw

sudo ufw deny 8899/udp

iptables

sudo iptables -A INPUT -p udp --dport 8899 -j DROP

nftables

sudo nft add rule inet filter input udp dport 8899 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block UDP 8899' -Direction Inbound -Protocol UDP -LocalPort 8899 -Action Block

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