[clamav-users] [OT] ClamAV® blog: ClamAV 0.104.0 Release Candidate is here!

[Gene Heskett]

On Thursday 29 July 2021 14:45:28 G.W. Haywood via clamav-users wrote:

> Hi there,
>
> On Thu, 29 Jul 2021, Paul Kosinski via clamav-users wrote:
> > My current firewall, which also does inter-LAN routing with iptables
> > filtering, has six (6) gigabit Ethernet ports on it (including one
> > 4-port Intel card in a PCIe-x4 slot). Which model Raspberry Pi
> > should I use?
>
> From my experience I would say avoid the 4B if you value stability.

From here, and I'm running a linuxcnc buildbot on my 2gig 4b, all it 
needs is adequate cooling, in my case the 4 little bitty heat sinks AND 
a stolen 12 volt video card fan running on 5 volts blowing rather 
leasurely on them.  And it runs from power outage to power outage, which 
I have to create by shutting off the power strip its running on as I 
have a standby that starts in about 4 seconds, and its on a 650 WA UPS 
with a 2 minute shutdown I can't change.

It just works. For months and months.

> You'd probably want to use USB-Ethernet adaptors.  You could have more
> or less as many as you like.  I'm using Ethernet over USB with several
> little Pi Zeros.  No actual physical Ethernet hardware, but a network
> stack etc. in the applications.  The Zero has no Ethernet port at all
> but some of the things we're running on them expect you to have one.
> You can comfortably watch movies on the Pi Zero.  It's amazing such a
> tiny thing can do that, at least it is when you're as old as I am and
> the first CPU youactually handled was a 1MHz (ONE MegaHertz) Motorola
> 6800, and you had to wear ear defenders for programming it via ASR33.
>
> Without knowing more about the performance you'd need I couldn't say
> whether one Pi or another would do the job, but unless you're a very
> heavy user of bandwidth I'd be surprised if you'd stress the quad core
> 1.4 GHz CPU of a Pi 3B+ in a firewall just filtering packets.  To be
> honest, the few times that I've run CPU stats on my firewalls, the CPU
> usage has been so low that it hasn't really made an impression.  I've
> just checked our perimeter firewall, CPU is hovering about 99.6% idle.
> As I said this isn't a Pi, it's an ALIX board which is a single-core,
> 32 bit AMD 'Geode' at 500MHz.  Never seen one crash.
>
> Straying back somewhere near the topic, I think you'd need the Pi4B
> with probably 4G of RAM to run clamd or clamscan.  I run clamd on one
> but that's all it does.  It crashes occasionally, last time was 6.5
> days ago.  My money's on power supply problems.  I don't think it's
> temperature related, it was running at about 65C when it crashed last,
> it redlines at 85C.  It's supposed to throttle itself when it gets up
> there but I haven't any done real stress testing like I have with some
> other devices.  Most of our 4Bs are in at least 50% glazed offices and
> despite being in England it can get very warm in there sometimes.  In
> summer they're often operating in the 70s without any trouble.  We fit
> the CPUs with heat sinks, but no fan.
>
> You might be able to run a local ClamAV mirror with only a Pi 3B+ with
> its roughly 850M available RAM - I'll give that a try someday.


Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/gene>