All ports
Port190/UDP
gacpPort
190
Protocol
UDP
Category
Well-Known
Service
gacp
What is port 190?
Port 190/UDP is a Well-Known port, assigned by IANA for widely recognized services. It is associated with the gacp service.
Gateway Access Control Protocol
Useful commands
nmapnmap -p 190 -sV example.comnetcatnc -zv example.com 190curlcurl -v http://example.com:190/telnettelnet example.com 190bash(echo > /dev/udp/example.com/190) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 190/udpDeny
sudo ufw deny 190/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 190 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 190 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=190/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 190" dir=in action=allow protocol=UDP localport=190Security 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- Outdated versions with vulnerabilities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 190/UDP?
Port 190/UDP is associated with the gacp service. Gateway Access Control Protocol
Is it safe to expose port 190 to the Internet?
It depends on the service and configuration. Port 190 (gacp) 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 190 is open?
You can use nmap: `nmap -p 190 -sV example.com`, netcat: `nc -zv example.com 190`, or the bash command: `(echo > /dev/udp/example.com/190) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 190 on my firewall?
On Linux with UFW: `sudo ufw allow 190/udp` (open) or `sudo ufw deny 190/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 190 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 190" dir=in action=allow protocol=UDP localport=190`.
What applications and services use port 190?
Port 190/UDP is used by the gacp service. Specific uses depend on the software and configuration. Check our related tools section for more information.