- 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 1234: Infoseek Search Agent
Port 1234 is assigned by IANA to search-agent (Infoseek Search Agent).
1234
How search-agent works
Other servicesThe client sends a request to port 1234 and the search-agent 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
Is port 1234 dangerous?
We have no specific security note for port 1234. Its risk depends on the program actually listening on it. General advice for other services services:
IANA registry entries for port 1234
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| search-agent | 1234 | TCP, UDP | Infoseek Search Agent | - | - |
// source: IANA service name and port number registry
Which program uses port 1234, and is it reachable?
Linux
sudo ss -ltnup 'sport = :1234' # process listening on 1234
sudo lsof -nP -i :1234macOS
sudo lsof -nP -i :1234
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1234 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 1234 netstat -ano | findstr :1234
From another machine
nmap -p 1234 -sV <host> sudo nmap -sU -p 1234 <host> nc -zv <host> 1234
Block it in the firewall
sudo ufw deny 1234/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 1234" -Direction Inbound -LocalPort 1234 -Protocol TCP -Action Block # Windows
What is port 1234 used for?
Port 1234 is assigned by IANA to search-agent (Infoseek Search Agent).
Is port 1234 TCP or UDP?
Port 1234 is registered for TCP and UDP.
Is it safe to open port 1234?
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 1234 is open?
On Linux run "ss -ltnup 'sport = :1234'", on macOS "lsof -nP -i :1234", and on Windows "netstat -ano | findstr :1234" to see the local process. From another machine, "nmap -p 1234 <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