CyberHunter
Local dataset, no network
// Other services

Port 208: AppleTalk Unused

Port 208 is assigned by IANA to at-8 (AppleTalk Unused).

208

How at-8 works

Other services
client:208at-8response client:208at-8response

The client sends a request to port 208 and the at-8 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
Well-known (0-1023)
Category
Other services
01 Security

Is port 208 dangerous?

We have no specific security note for port 208. 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 208

ServicePortTransportDescriptionReferenceUpdated
at-8 208 TCP, UDP AppleTalk Unused - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 208, and is it reachable?

Linux

sudo ss -ltnup 'sport = :208'      # process listening on 208
sudo lsof -nP -i :208

macOS

sudo lsof -nP -i :208

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 208 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 208
netstat -ano | findstr :208

From another machine

nmap -p 208 -sV <host>
sudo nmap -sU -p 208 <host>
nc -zv <host> 208

Block it in the firewall

sudo ufw deny 208/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 208" -Direction Inbound -LocalPort 208 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 208 used for?

Port 208 is assigned by IANA to at-8 (AppleTalk Unused).

Is port 208 TCP or UDP?

Port 208 is registered for TCP and UDP.

Is it safe to open port 208?

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 208 is open?

On Linux run "ss -ltnup 'sport = :208'", on macOS "lsof -nP -i :208", and on Windows "netstat -ano | findstr :208" to see the local process. From another machine, "nmap -p 208 <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

Latest vulnerability news

All news