How to block dodge chrome?

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How to block dodge chrome?

L1 Bithead

Hi.. all

Do you know "dodge chrome"?

This is bypass the url filtering by the modified google chrome.

(http method : get \r\n )

I do not find the related signature in palo alto applipdia.(app-id , ips , virus)

How to block dodge chrome?

1 accepted solution

Accepted Solutions

L4 Transporter

Finally found a build of DodgeChrome with some google-fu and did some testing.  Traffic generated by this client is identified as unknown-tcp by the firewall, not web-browsing.  If you block unknown-tcp the client will be unable to transfer data. 


Custom signatures will not be possible for this because the string you are looking for is less than 7 bytes, and with the session identified as unknown-tcp you can not utilize HTTP contexts for pattern matching.


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4 REPLIES 4

L7 Applicator

Hello Wooki,

Could you please go through this doc:

?

Enabling Strip X-Forward-For Feature Blocks Communications to Certain Websites

Did you try the custom signature to block this:

Creating Custom Threat Signatures

Custom Application Signatures

Thanks

L7 Applicator

You can probably do a packet capture and modify this procedure that blocks Chrome to be unique for Dodge Chrome.

How to Block Google Chrome

Steve Puluka BSEET - IP Architect - DQE Communications (Metro Ethernet/ISP)
ACE PanOS 6; ACE PanOS 7; ASE 3.0; PSE 7.0 Foundations & Associate in Platform; Cyber Security; Data Center

L4 Transporter

Finally found a build of DodgeChrome with some google-fu and did some testing.  Traffic generated by this client is identified as unknown-tcp by the firewall, not web-browsing.  If you block unknown-tcp the client will be unable to transfer data. 


Custom signatures will not be possible for this because the string you are looking for is less than 7 bytes, and with the session identified as unknown-tcp you can not utilize HTTP contexts for pattern matching.


Thanks a lot !!!!

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