All ports
Port135/UDP
epmapPort
135
Protocol
UDP
Category
Well-Known
Service
epmap
What is port 135?
Port 135/UDP is a Well-Known port, assigned by IANA for widely recognized services. It is associated with the epmap service.
DCE endpoint resolution
Useful commands
nmapnmap -p 135 -sV example.comnetcatnc -zv example.com 135curlcurl -v http://example.com:135/telnettelnet example.com 135bash(echo > /dev/udp/example.com/135) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 135/udpDeny
sudo ufw deny 135/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 135 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 135 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=135/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 135" dir=in action=allow protocol=UDP localport=135Security 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- Outdated versions with vulnerabilities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 135/UDP?
Port 135/UDP is associated with the epmap service. DCE endpoint resolution
Is it safe to expose port 135 to the Internet?
It depends on the service and configuration. Port 135 (epmap) is a Well-Known 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 135 is open?
You can use nmap: `nmap -p 135 -sV example.com`, netcat: `nc -zv example.com 135`, or the bash command: `(echo > /dev/udp/example.com/135) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 135 on my firewall?
On Linux with UFW: `sudo ufw allow 135/udp` (open) or `sudo ufw deny 135/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 135 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 135" dir=in action=allow protocol=UDP localport=135`.
What applications and services use port 135?
Port 135/UDP is used by the epmap service. Specific uses depend on the software and configuration. Check our related tools section for more information.