All ports
Port5768/TCP
openmailpxyPort
5768
Protocol
TCP
Category
Registered
Service
openmailpxy
What is port 5768?
Port 5768/TCP is a Registered port, registered with IANA for specific applications. It is associated with the openmailpxy service.
OpenMail CMTS Server
Useful commands
nmapnmap -p 5768 -sV example.comnetcatnc -zv example.com 5768curlcurl -v http://example.com:5768/telnettelnet example.com 5768bash(echo > /dev/tcp/example.com/5768) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 5768/tcpDeny
sudo ufw deny 5768/tcpiptablesAllow
sudo iptables -A INPUT -p tcp --dport 5768 -j ACCEPTDeny
sudo iptables -D INPUT -p tcp --dport 5768 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=5768/tcpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 5768" dir=in action=allow protocol=TCP localport=5768Security Risks
- Open relay used for spam
- Email spoofing
- Brute force attacks against email accounts
- Information disclosure in email headers
Frequently Asked Questions
What service runs on port 5768/TCP?
Port 5768/TCP is associated with the openmailpxy service. OpenMail CMTS Server
Is it safe to expose port 5768 to the Internet?
It depends on the service and configuration. Port 5768 (openmailpxy) 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 5768 is open?
You can use nmap: `nmap -p 5768 -sV example.com`, netcat: `nc -zv example.com 5768`, or the bash command: `(echo > /dev/tcp/example.com/5768) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 5768 on my firewall?
On Linux with UFW: `sudo ufw allow 5768/tcp` (open) or `sudo ufw deny 5768/tcp` (close). With iptables: `sudo iptables -A INPUT -p tcp --dport 5768 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 5768" dir=in action=allow protocol=TCP localport=5768`.
What applications and services use port 5768?
Port 5768/TCP is used by the openmailpxy service. Specific uses depend on the software and configuration. Check our related tools section for more information.