All ports
Port27442/UDP
jesmsjcPort
27442
Protocol
UDP
Category
Registered
Service
jesmsjc
What is port 27442?
Port 27442/UDP is a Registered port, registered with IANA for specific applications. It is associated with the jesmsjc service.
Job controller service
Useful commands
nmapnmap -p 27442 -sV example.comnetcatnc -zv example.com 27442curlcurl -v http://example.com:27442/telnettelnet example.com 27442bash(echo > /dev/udp/example.com/27442) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 27442/udpDeny
sudo ufw deny 27442/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 27442 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 27442 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=27442/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 27442" dir=in action=allow protocol=UDP localport=27442Security Risks
- Unauthorized access to the service
- Data exposure if the service is unauthenticated
- Outdated versions with vulnerabilities
- Incorrect service configuration
Frequently Asked Questions
What service runs on port 27442/UDP?
Port 27442/UDP is associated with the jesmsjc service. Job controller service
Is it safe to expose port 27442 to the Internet?
It depends on the service and configuration. Port 27442 (jesmsjc) is a Registered port. If you need to expose it, keep the service updated, use strong authentication, and configure a firewall. It's always recommended to restrict access by IP when possible.
How do I check if port 27442 is open?
You can use nmap: `nmap -p 27442 -sV example.com`, netcat: `nc -zv example.com 27442`, or the bash command: `(echo > /dev/udp/example.com/27442) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 27442 on my firewall?
On Linux with UFW: `sudo ufw allow 27442/udp` (open) or `sudo ufw deny 27442/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 27442 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 27442" dir=in action=allow protocol=UDP localport=27442`.
What applications and services use port 27442?
Port 27442/UDP is used by the jesmsjc service. Specific uses depend on the software and configuration. Check our related tools section for more information.