Port 6343 · sFlow

Port 6343 is sFlow, UDP.

sFlow — packet and interface counter sampling from switches and routers. Vendor-neutral alternative to NetFlow.

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 udp-6343 protocol udp port 6343

set rulebase security rules <rule-name> from <from-zone> to <to-zone> source any destination any application sflow service udp-6343 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 -ulnp | grep :6343
• nmap nmap -sU -p 6343 <host>

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