[clamav-users] Clam updates failing

Joel Esler (jesler) jesler at cisco.com
Fri Oct 22 18:47:01 UTC 2021



> On Oct 22, 2021, at 14:16, Paul Kosinski via clamav-users <clamav-users at lists.clamav.net> wrote:
> 
> On Fri, 22 Oct 2021 13:27:46 +0000
> "Joel Esler \(jesler\) via clamav-users" <clamav-users at lists.clamav.net> wrote:
> 
>>> On Oct 21, 2021, at 18:55, Kenneth Porter <shiva at sewingwitch.com> wrote:
>>> 
>>> On 10/21/2021 10:14 AM, Paul Kosinski via clamav-users wrote:  
>>>> I've never seen a DNS age warning, but that might be because, for several years now, I only run freshclam when the DNS TXT record (which I check hourly) says there is a new signature available compared to a local file's version number (in its header).  
>>> 
>>> I thought freshclam did the DNS check itself. Why do it again before running freshclam?  
>> 
>> It does.  No need to do an extra check.
> 
> 
> Since checking the DNS TXT record costs almost nothing (and is UDP), I figure I can do it more often than running freshclam without ever risking triggering Cloudflare's bandwidth limits. And, although I currently do it only once per hour, if there ever was something like a SANS Threat Level RED, I could up the frequency to get the latest sigs ASAP.
> 
> 

DNS is unrestricted.  That’s why I am saying it’s unnecessary.  The restrictions are on the files themselves.  


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