All ports
Port58/TCP
xns-mailPort
58
Protocol
TCP
Category
Well-Known
Service
xns-mail
What is port 58?
Port 58/TCP is a Well-Known port, assigned by IANA for widely recognized services. It is associated with the xns-mail service.
XNS Mail
Useful commands
nmapnmap -p 58 -sV example.comnetcatnc -zv example.com 58curlcurl -v http://example.com:58/telnettelnet example.com 58bash(echo > /dev/tcp/example.com/58) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 58/tcpDeny
sudo ufw deny 58/tcpiptablesAllow
sudo iptables -A INPUT -p tcp --dport 58 -j ACCEPTDeny
sudo iptables -D INPUT -p tcp --dport 58 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=58/tcpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 58" dir=in action=allow protocol=TCP localport=58Security 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 58/TCP?
Port 58/TCP is associated with the xns-mail service. XNS Mail
Is it safe to expose port 58 to the Internet?
It depends on the service and configuration. Port 58 (xns-mail) 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 58 is open?
You can use nmap: `nmap -p 58 -sV example.com`, netcat: `nc -zv example.com 58`, or the bash command: `(echo > /dev/tcp/example.com/58) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 58 on my firewall?
On Linux with UFW: `sudo ufw allow 58/tcp` (open) or `sudo ufw deny 58/tcp` (close). With iptables: `sudo iptables -A INPUT -p tcp --dport 58 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 58" dir=in action=allow protocol=TCP localport=58`.
What applications and services use port 58?
Port 58/TCP is used by the xns-mail service. Specific uses depend on the software and configuration. Check our related tools section for more information.