QoS and SSL decryption questions.

cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 
Announcements
Please sign in to see details of an important advisory in our Customer Advisories area.

QoS and SSL decryption questions.

L1 Bithead

Seems some of our customers are trying to slow down youtube, facebook etc. without SSL decryption.

 

The confusing part is in the logs these show up as youtube-base, facebook-base etc but only sometimes and then other times they show up as SSL.

 

So is using the QoS feature pointless without performing SSL decryption first?

 

Ref:https://live.paloaltonetworks.com/t5/Management-Articles/Facebook-Blocked-without-SSL-Decryption-Ena...

1 accepted solution

Accepted Solutions

Cyber Elite
Cyber Elite

@AllwynMascarenhas,

Not completely, but it's also not really that effective. As you've stated without decryption the firewall does application identification based off of what it can actually see, if you aren't decrypting traffic this ability is limited. Generally if someone is trying to rate limit specific applications it would be advisable to explain that there will only be limited success, and if they aren't willing to enable decryption you can't fully accomplish this task. 

View solution in original post

3 REPLIES 3

Cyber Elite
Cyber Elite

@AllwynMascarenhas,

Not completely, but it's also not really that effective. As you've stated without decryption the firewall does application identification based off of what it can actually see, if you aren't decrypting traffic this ability is limited. Generally if someone is trying to rate limit specific applications it would be advisable to explain that there will only be limited success, and if they aren't willing to enable decryption you can't fully accomplish this task. 

But at the same time once decryption is available the firewall can succesfully achieve rate limiting most apps like youtube and facebook, right?

@AllwynMascarenhas,

Correct. 

  • 1 accepted solution
  • 4031 Views
  • 3 replies
  • 0 Likes
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 LIVEcommunity as a whole!

The LIVEcommunity thanks you for your participation!