CyberHunter
Local dataset, no network
// Other services

Port 1598: picknfs

Port 1598 is assigned by IANA to picknfs (picknfs).

1598

How picknfs works

Other services
client:1598picknfsresponse client:1598picknfsresponse

The client sends a request to port 1598 and the picknfs 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 1598 dangerous?

We have no specific security note for port 1598. 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 1598

ServicePortTransportDescriptionReferenceUpdated
picknfs 1598 TCP, UDP picknfs - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1598, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1598'      # process listening on 1598
sudo lsof -nP -i :1598

macOS

sudo lsof -nP -i :1598

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1598 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1598
netstat -ano | findstr :1598

From another machine

nmap -p 1598 -sV <host>
sudo nmap -sU -p 1598 <host>
nc -zv <host> 1598

Block it in the firewall

sudo ufw deny 1598/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1598" -Direction Inbound -LocalPort 1598 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1598 used for?

Port 1598 is assigned by IANA to picknfs (picknfs).

Is port 1598 TCP or UDP?

Port 1598 is registered for TCP and UDP.

Is it safe to open port 1598?

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 1598 is open?

On Linux run "ss -ltnup 'sport = :1598'", on macOS "lsof -nP -i :1598", and on Windows "netstat -ano | findstr :1598" to see the local process. From another machine, "nmap -p 1598 <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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