CyberHunter
Local dataset, no network
// Other services

Port 2635: Back Burner

Port 2635 is assigned by IANA to backburner (Back Burner).

2635

How backburner works

Other services
client:2635backburnerresponse client:2635backburnerresponse

The client sends a request to port 2635 and the backburner 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
Other services
01 Security

Is port 2635 dangerous?

We have no specific security note for port 2635. Its risk depends on the program actually listening on it. General advice for other services services:

  • Close the port if nothing on the host needs it.
  • Identify the process that listens on it (commands below) before opening it in a firewall.
  • Expose a service only to the networks that use it.
02 Registry

IANA registry entries for port 2635

ServicePortTransportDescriptionReferenceUpdated
backburner 2635 TCP, UDP Back Burner - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2635, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2635'      # process listening on 2635
sudo lsof -nP -i :2635

macOS

sudo lsof -nP -i :2635

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2635 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2635
netstat -ano | findstr :2635

From another machine

nmap -p 2635 -sV <host>
sudo nmap -sU -p 2635 <host>
nc -zv <host> 2635

Block it in the firewall

sudo ufw deny 2635/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2635" -Direction Inbound -LocalPort 2635 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2635 used for?

Port 2635 is assigned by IANA to backburner (Back Burner).

Is port 2635 TCP or UDP?

Port 2635 is registered for TCP and UDP.

Is it safe to open port 2635?

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. Close the port if nothing on the host needs it.

How do I check if port 2635 is open?

On Linux run "ss -ltnup 'sport = :2635'", on macOS "lsof -nP -i :2635", and on Windows "netstat -ano | findstr :2635" to see the local process. From another machine, "nmap -p 2635 <host>" shows whether it is reachable.

05 Related
:4444 Metasploit default / krb524 tcp · udp · high risk :31337 Back Orifice / elite tcp · udp · high risk :1 TCP Port Service Multiplexer tcp · udp :5 Remote Job Entry tcp · udp :9 Discard tcp · udp · sctp · dccp :11 Active Users tcp · udp :17 Quote of the Day tcp · udp :18 Message Send Protocol (historic) tcp · udp

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