- 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.
Port 11489: ASG Cypress Secure Only
Port 11489 is assigned by IANA to asgcypresstcps (ASG Cypress Secure Only).
11489
How asgcypresstcps works
Other servicesThe client sends a request to port 11489 and the asgcypresstcps service answers.
- Transport
- TCP
- 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
Is port 11489 dangerous?
We have no specific security note for port 11489. Its risk depends on the program actually listening on it. General advice for other services services:
IANA registry entries for port 11489
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| asgcypresstcps | 11489 | TCP | ASG Cypress Secure Only | - | 2010-07-01 |
| - | 11489 | - | Reserved | - | - |
// source: IANA service name and port number registry
Which program uses port 11489, and is it reachable?
Linux
sudo ss -ltnup 'sport = :11489' # process listening on 11489
sudo lsof -nP -i :11489macOS
sudo lsof -nP -i :11489
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 11489 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 11489 netstat -ano | findstr :11489
From another machine
nmap -p 11489 -sV <host> nc -zv <host> 11489
Block it in the firewall
sudo ufw deny 11489/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 11489" -Direction Inbound -LocalPort 11489 -Protocol TCP -Action Block # Windows
What is port 11489 used for?
Port 11489 is assigned by IANA to asgcypresstcps (ASG Cypress Secure Only).
Is port 11489 TCP or UDP?
Port 11489 is registered for TCP.
Is it safe to open port 11489?
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 11489 is open?
On Linux run "ss -ltnup 'sport = :11489'", on macOS "lsof -nP -i :11489", and on Windows "netstat -ano | findstr :11489" to see the local process. From another machine, "nmap -p 11489 <host>" shows whether it is reachable.
Other other services ports
: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