The problem with our using a Web proxy is that it too cached stale CVDs
if it was using the BOS Cloudflare server. That is, the DNS TXT record
reported a new CVD, but the proxy couldn't deliver it. I considered
using a proxy on our offsite domain host (which happened not to use
BOS), but that seemed to be too complicated, considering our small LAN.

What I finally did was have each machine on our LAN point freshclam 
directly at Cloudflare, *but* I modified our firewall to let the file
server access *only* the two Cloudflare IP addresses at port 80 and
nothing else. (Why do computers always need so many special case
workarounds?)


On Wed, 31 Jul 2019 08:52:49 -0500
"J.R. via clamav-users" <clamav-users@lists.clamav.net> wrote:

> > Then, when we had trouble with Cloudflare's BOS server often being
> > out of sync (for CVDs) with the DNS TXT record, I removed it. Now,
> > I am dismayed that I have to give our file server a bit of Internet
> > access so that it can directly download the CDIFFs.
> 
> I remember issue where some proxy was caching stale copies of
> daily.cvd...
> 
> If you don't want to let your file server access the internet
> directly, did you ever try setting up a proxy server (and configure
> freshclam to use it)? That would solve the direct access dilemma, and
> also cache cdiff (and other) files locally to save bandwidth.

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