[Firehol-support] Recommended method to re-resolve domain names

Mitch Claborn mitch_ml at claborn.net
Tue Jul 31 23:14:54 BST 2018

I haven't found a built-in clean way to use IPSets for dynamic DNS 
entries. The ipset helper command in firehol works well for the initial 
setup, but I don't see a way to just run firehol to update the ipsets 
without also rebuilding the firewall.

I tried "ipset addfile" but it appears to ignore host names and only 
adds IP addresses. If it would handle host names then I could use "ipset 
addfile" from firehol.conf and "firehol ipset_update_from_file" from a 
script run from cron.

Another (untested) idea would be to put all of the firehol ipset helper 
commands in a single file, included with "source" in firehol.conf. I 
could then, in theory, run just that file from a cron script to update 
the ipset collections. Not sure if that will work or not, I'll try it 

I'm open to suggestions/thoughts on how to make this work.


> On 07/26/2018 12:07 AM, Phil Whineray wrote:
>> In the modern age, ipsets are the way to go [1]. Just update them from
>> crontab.

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