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// Network services

Port 8899: ospf-lite

Port 8899 is assigned by IANA to ospf-lite (ospf-lite).

8899

How ospf-lite works

Network services
client:8899ospf-literesponse client:8899ospf-literesponse

The client sends a request to port 8899 and the ospf-lite service answers.

Transport
TCP · UDP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned1 registered service
Range
Registered (1024-49151)
Category
Network services
01 Security

Is port 8899 dangerous?

We have no specific security note for port 8899. Its risk depends on the program actually listening on it. General advice for network services services:

  • Answer only the networks that need the service (no open resolvers, relays or reflectors).
  • UDP services can be abused for DDoS amplification: rate-limit or block them at the edge.
  • Disable legacy test services that have no use in production.
02 Registry

IANA registry entries for port 8899

ServicePortTransportDescriptionReferenceUpdated
ospf-lite 8899 TCP, UDP ospf-lite - 2008-01-07

// source: IANA service name and port number registry

03 Check it

Which program uses port 8899, and is it reachable?

Linux

sudo ss -ltnup 'sport = :8899'      # process listening on 8899
sudo lsof -nP -i :8899

macOS

sudo lsof -nP -i :8899

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 8899 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 8899
netstat -ano | findstr :8899

From another machine

nmap -p 8899 -sV <host>
sudo nmap -sU -p 8899 <host>
nc -zv <host> 8899

Block it in the firewall

sudo ufw deny 8899/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 8899" -Direction Inbound -LocalPort 8899 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 8899 used for?

Port 8899 is assigned by IANA to ospf-lite (ospf-lite).

Is port 8899 TCP or UDP?

Port 8899 is registered for TCP and UDP.

Is it safe to open port 8899?

It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Answer only the networks that need the service (no open resolvers, relays or reflectors).

How do I check if port 8899 is open?

On Linux run "ss -ltnup 'sport = :8899'", on macOS "lsof -nP -i :8899", and on Windows "netstat -ano | findstr :8899" to see the local process. From another machine, "nmap -p 8899 <host>" shows whether it is reachable.

05 Related
:53 DNS tcp · udp · moderate risk :135 MS RPC tcp · udp · high risk :123 NTP udp · tcp · moderate risk :67 DHCP server udp · tcp · moderate risk :111 rpcbind tcp · udp · high risk :9100 Raw printing (JetDirect) tcp · udp · high risk :631 IPP / CUPS tcp · udp · high risk :5353 mDNS udp · tcp · moderate risk

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