Port 548 · AFP

Port 548 is AFP, TCP.

Apple Filing Protocol — macOS network file sharing, legacy. Modern Macs prefer SMB.

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-548 protocol tcp port 548

set rulebase security rules <rule-name> from <from-zone> to <to-zone> source any destination any application afp service tcp-548 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 :548
• PowerShell Test-NetConnection <host> -Port 548
• nmap nmap -p 548 <host>

Related ports

• 445 SMB
• 2049 NFS
• 19 Chargen
• 23 Telnet
• 42 WINS
• 110 POP3

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