CyberHunter
LinkedIn profile - Bastien Cordier Email: contact@bastiencordier.pro
// Other services

Port 211: Texas Instruments 914C/G Terminal IANA assigned this well-formed service name as a replacement for "914c/g".

Port 211 is assigned by IANA to 914c-g (Texas Instruments 914C/G Terminal IANA assigned this well-formed service name as a replacement for "914c/g".), 914c/g (Texas Instruments 914C/G Terminal).

211

How 914c-g works

Other services
client:211914c-gresponse client:211914c-gresponse

The client sends a request to port 211 and the 914c-g service answers.

Transport
TCP · UDP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned2 registered services
Range
Well-known (0-1023)
Category
Other services
01 Security

Is port 211 dangerous?

We have no specific security note for port 211. 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 211

ServicePortTransportDescriptionReferenceUpdated
914c-g 211 TCP, UDP Texas Instruments 914C/G Terminal IANA assigned this well-formed service name as a replacement for "914c/g". - -
914c/g 211 TCP, UDP Texas Instruments 914C/G Terminal - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 211, and is it reachable?

Linux

sudo ss -ltnup 'sport = :211'      # process listening on 211
sudo lsof -nP -i :211

macOS

sudo lsof -nP -i :211

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 211 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 211
netstat -ano | findstr :211

From another machine

nmap -p 211 -sV <host>
sudo nmap -sU -p 211 <host>
nc -zv <host> 211

Block it in the firewall

sudo ufw deny 211/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 211" -Direction Inbound -LocalPort 211 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 211 used for?

Port 211 is assigned by IANA to 914c-g (Texas Instruments 914C/G Terminal IANA assigned this well-formed service name as a replacement for "914c/g".), 914c/g (Texas Instruments 914C/G Terminal).

Is port 211 TCP or UDP?

Port 211 is registered for TCP and UDP.

Is it safe to open port 211?

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 211 is open?

On Linux run "ss -ltnup 'sport = :211'", on macOS "lsof -nP -i :211", and on Windows "netstat -ano | findstr :211" to see the local process. From another machine, "nmap -p 211 <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