Port 8443 · HTTPS Alternate

Port 8443 is HTTPS Alternate, TCP.

Common alternative HTTPS port, often used when 443 is taken.

Palo Alto

Create the service object for this port, then allow the App-ID on it. Restricting the rule to the port's service object keeps the rule working on a non-default port and stops the App-ID matching on other ports. Replace the placeholders with your own rule name and zones.

set service tcp-8443 protocol tcp port 8443

set rulebase security rules <rule-name> from <from-zone> to <to-zone> source any destination any application ssl service tcp-8443 action allow

Risk and exposure

Rated low risk. Even so, only expose this port to the networks and hosts that need it, and keep it patched.

Check it

• Linux ss -tlnp | grep :8443
• PowerShell Test-NetConnection <host> -Port 8443
• nmap nmap -p 8443 <host>

Related ports

• 8080 HTTP Alternate
• 443 HTTPS
• 7443 WebLogic HTTPS
• 8888 HTTP Alt / Jupyter
• 80 HTTP
• 10000 Webmin

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