What happens if Dynamic Block List server is inaccessible?

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L4 Transporter

What happens if Dynamic Block List server is inaccessible?

If we are retrieving a list of IP's via Dynamic Block List to Allow and/or Deny traffic, what would happen if the web server hosting the .txt file is inaccessible during a refresh? Would the DBL object lose all of the IP addresses and render the rule using it useless?

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L5 Sessionator

Re: What happens if Dynamic Block List server is inaccessible?

Hello,

No, it'll use the previous refresh output results(If that was successful) or the previous cached output.

Regards,

Hari Yadavalli

L6 Presenter

Re: What happens if Dynamic Block List server is inaccessible?

Hi Jambulo,

It will use old cached entries if web-server doesnt respond

Regards,

Hardik SHah

L7 Applicator

Re: What happens if Dynamic Block List server is inaccessible?

The Palo Alto tech doc noting the cache usage behavior.

What Happens if the Server Configured for Dynamic Block Lists Becomes Unreachable?

Working with External Block List (EBL) Formats and Limitations

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
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