CyberHunter
Local dataset, no network
// Other services

Port 1170: AT+C License Manager

Port 1170 is assigned by IANA to atc-lm (AT+C License Manager).

1170

How atc-lm works

Other services
client:1170atc-lmresponse client:1170atc-lmresponse

The client sends a request to port 1170 and the atc-lm 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 1170 dangerous?

We have no specific security note for port 1170. 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 1170

ServicePortTransportDescriptionReferenceUpdated
atc-lm 1170 TCP, UDP AT+C License Manager - 2004-02

// source: IANA service name and port number registry

03 Check it

Which program uses port 1170, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1170'      # process listening on 1170
sudo lsof -nP -i :1170

macOS

sudo lsof -nP -i :1170

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1170 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1170
netstat -ano | findstr :1170

From another machine

nmap -p 1170 -sV <host>
sudo nmap -sU -p 1170 <host>
nc -zv <host> 1170

Block it in the firewall

sudo ufw deny 1170/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1170" -Direction Inbound -LocalPort 1170 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1170 used for?

Port 1170 is assigned by IANA to atc-lm (AT+C License Manager).

Is port 1170 TCP or UDP?

Port 1170 is registered for TCP and UDP.

Is it safe to open port 1170?

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 1170 is open?

On Linux run "ss -ltnup 'sport = :1170'", on macOS "lsof -nP -i :1170", and on Windows "netstat -ano | findstr :1170" to see the local process. From another machine, "nmap -p 1170 <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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