Port 49 · TACACS+

Port 49 is TACACS+, TCP.

Terminal Access Controller Access Control System Plus — AAA for network devices. Encrypts the full payload (unlike RADIUS which only encrypts the password).

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-49 protocol tcp port 49

set rulebase security rules <rule-name> from <from-zone> to <to-zone> source any destination any application tacacs-plus service tcp-49 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 :49
• PowerShell Test-NetConnection <host> -Port 49
• nmap nmap -p 49 <host>

Related ports

• 1812 RADIUS Auth
• 2055 NetFlow
• 69 TFTP
• 88 Kerberos
• 514 Syslog
• 1813 RADIUS Accounting

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