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// Other services

Port 2849: FXP

Port 2849 is assigned by IANA to fxp (FXP).

2849

How fxp works

Other services
client:2849fxpresponse client:2849fxpresponse

The client sends a request to port 2849 and the fxp 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 2849 dangerous?

We have no specific security note for port 2849. 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 2849

ServicePortTransportDescriptionReferenceUpdated
fxp 2849 TCP, UDP FXP - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2849, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2849'      # process listening on 2849
sudo lsof -nP -i :2849

macOS

sudo lsof -nP -i :2849

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2849 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2849
netstat -ano | findstr :2849

From another machine

nmap -p 2849 -sV <host>
sudo nmap -sU -p 2849 <host>
nc -zv <host> 2849

Block it in the firewall

sudo ufw deny 2849/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2849" -Direction Inbound -LocalPort 2849 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2849 used for?

Port 2849 is assigned by IANA to fxp (FXP).

Is port 2849 TCP or UDP?

Port 2849 is registered for TCP and UDP.

Is it safe to open port 2849?

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 2849 is open?

On Linux run "ss -ltnup 'sport = :2849'", on macOS "lsof -nP -i :2849", and on Windows "netstat -ano | findstr :2849" to see the local process. From another machine, "nmap -p 2849 <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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