All ports
Port390/TCP
uisPort
390
Protocol
TCP
Category
Well-Known
Service
uis
What is port 390?
Port 390/TCP is a Well-Known port, assigned by IANA for widely recognized services. It is associated with the uis service.
UIS
Useful commands
nmapnmap -p 390 -sV example.comnetcatnc -zv example.com 390curlcurl -v http://example.com:390/telnettelnet example.com 390bash(echo > /dev/tcp/example.com/390) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 390/tcpDeny
sudo ufw deny 390/tcpiptablesAllow
sudo iptables -A INPUT -p tcp --dport 390 -j ACCEPTDeny
sudo iptables -D INPUT -p tcp --dport 390 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=390/tcpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 390" dir=in action=allow protocol=TCP localport=390Security 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- Outdated versions with vulnerabilities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 390/TCP?
Port 390/TCP is associated with the uis service. UIS
Is it safe to expose port 390 to the Internet?
It depends on the service and configuration. Port 390 (uis) 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 390 is open?
You can use nmap: `nmap -p 390 -sV example.com`, netcat: `nc -zv example.com 390`, or the bash command: `(echo > /dev/tcp/example.com/390) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 390 on my firewall?
On Linux with UFW: `sudo ufw allow 390/tcp` (open) or `sudo ufw deny 390/tcp` (close). With iptables: `sudo iptables -A INPUT -p tcp --dport 390 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 390" dir=in action=allow protocol=TCP localport=390`.
What applications and services use port 390?
Port 390/TCP is used by the uis service. Specific uses depend on the software and configuration. Check our related tools section for more information.