ipv6 tunneled in ipv4 (protocol 41)

L1 Bithead

ipv6 tunneled in ipv4 (protocol 41)


  What application in the Palo Alto Application database matches with IP protocol 41 (used for tunneling IPv6 in IPv4?

  When doing Source NAT, is IP protocol 41 NATed?


Tags (3)
Palo Alto Networks Guru

Re: ipv6 tunneled in ipv4 (protocol 41)


We have several App-IDs that can be used to block IPv6-in-IPv4 tunneling:

1. Teredo


3. IPv6 - This will detect other forms of tunneling not identified by the above App-IDs.

These packets should be translated without modifying the IP protocol information.



Like what you see?

Show your appreciation!

Click Like if a post is helpful to you or if you just want to show your support.

Click Accept as Solution to acknowledge that the answer to your question has been provided.

The button appears next to the replies on topics you’ve started. The member who gave the solution and all future visitors to this topic will appreciate it!

These simple actions take just seconds of your time, but go a long way in showing appreciation for community members and the Live Community as a whole!

The Live Community thanks you for your participation!