Re: Firewall Speed

2006-05-19 Thread Josh Paetzel
On Thursday 18 May 2006 14:48, Chad Leigh -- Shire.Net LLC wrote:
 On May 18, 2006, at 12:39 PM, Giorgos Keramidas wrote:
  On 2006-05-18 11:03, bc [EMAIL PROTECTED] wrote:
  I want to run 6.1_RELEASE with Packet Filter(PF) configured as
  a gateway using 2 identical 10/100 nics, on an old 450mhz
  pentium with 256 meg ram and an 8 gig HD.
 
  In general, should I expect any speed performance issues with
  internet access base on the processor, ram and bus speeds of
  the MB?  Would the PF config cause any speed performance
  deficiencies?
 
  I had same setup as above but with IPF firewall and received
  complaints about surfing speed so I put them back on a Linksys
  router firewall.
 
  We'd have to see the ruleset to be able to reply in an informed
  manner.  I have seen firewalls doing both filtering  NAT on a
  system, with almost no overhead at all though.
 
  This top output:
 
  http://keramida.serverhive.com/pixelshow-top.txt
 
  shows that a FreeBSD 5.X system with 256 MB of physical memory is
  happily filtering the traffic and doing NAT for more than 100
  users, while still being 97% idle.

 I would think it is more than CPU speed.  The speed of the PCI bus
 and the speed and efficiency of the two network cards being used
 and their drivers may have a bit to do with latency (surfing
 speed)...

 Just a guess
 Chad


I had a dual pentium 100 with 96 megs of RAM that did ipf/ipnat for a 
10mbps connection with a couple dozen users.  CPU usage was usually 
around 1% and load averages .03 or so.  Latency and throughput were 
both acceptable.

The only reason I replaced the box was it was a single point of 
failure and the hardware was old enough that I was afraid there would 
be some sort of show stopper breakdown.

-- 
Thanks,

Josh Paetzel
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Re: Firewall Speed

2006-05-19 Thread Alexandre Biancalana

I have a Pentium III 600Mhz 720MB Ram running FreeBSD 4.10 with
IPFW+Nat+Squid+Qmail with Clamav+dnscache, routing 4 internal networks
(around 500 users), 3x 2Mbit/s links and a 1Mb internet link. Everything
works perfect !!

I will change the machine by the same problem that Josh said.

Regards,

Alexandre

On 5/19/06, Josh Paetzel [EMAIL PROTECTED] wrote:


On Thursday 18 May 2006 14:48, Chad Leigh -- Shire.Net LLC wrote:
 On May 18, 2006, at 12:39 PM, Giorgos Keramidas wrote:
  On 2006-05-18 11:03, bc [EMAIL PROTECTED] wrote:
  I want to run 6.1_RELEASE with Packet Filter(PF) configured as
  a gateway using 2 identical 10/100 nics, on an old 450mhz
  pentium with 256 meg ram and an 8 gig HD.
 
  In general, should I expect any speed performance issues with
  internet access base on the processor, ram and bus speeds of
  the MB?  Would the PF config cause any speed performance
  deficiencies?
 
  I had same setup as above but with IPF firewall and received
  complaints about surfing speed so I put them back on a Linksys
  router firewall.
 
  We'd have to see the ruleset to be able to reply in an informed
  manner.  I have seen firewalls doing both filtering  NAT on a
  system, with almost no overhead at all though.
 
  This top output:
 
  http://keramida.serverhive.com/pixelshow-top.txt
 
  shows that a FreeBSD 5.X system with 256 MB of physical memory is
  happily filtering the traffic and doing NAT for more than 100
  users, while still being 97% idle.

 I would think it is more than CPU speed.  The speed of the PCI bus
 and the speed and efficiency of the two network cards being used
 and their drivers may have a bit to do with latency (surfing
 speed)...

 Just a guess
 Chad


I had a dual pentium 100 with 96 megs of RAM that did ipf/ipnat for a
10mbps connection with a couple dozen users.  CPU usage was usually
around 1% and load averages .03 or so.  Latency and throughput were
both acceptable.

The only reason I replaced the box was it was a single point of
failure and the hardware was old enough that I was afraid there would
be some sort of show stopper breakdown.

--
Thanks,

Josh Paetzel
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Re: Firewall Speed

2006-05-18 Thread Giorgos Keramidas
On 2006-05-18 11:03, bc [EMAIL PROTECTED] wrote:
 I want to run 6.1_RELEASE with Packet Filter(PF) configured as
 a gateway using 2 identical 10/100 nics, on an old 450mhz
 pentium with 256 meg ram and an 8 gig HD.

 In general, should I expect any speed performance issues with
 internet access base on the processor, ram and bus speeds of
 the MB?  Would the PF config cause any speed performance
 deficiencies?

 I had same setup as above but with IPF firewall and received
 complaints about surfing speed so I put them back on a Linksys
 router firewall.

We'd have to see the ruleset to be able to reply in an informed
manner.  I have seen firewalls doing both filtering  NAT on a
system, with almost no overhead at all though.

This top output:

http://keramida.serverhive.com/pixelshow-top.txt

shows that a FreeBSD 5.X system with 256 MB of physical memory is
happily filtering the traffic and doing NAT for more than 100
users, while still being 97% idle.

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Re: Firewall Speed

2006-05-18 Thread Chad Leigh -- Shire.Net LLC


On May 18, 2006, at 12:39 PM, Giorgos Keramidas wrote:


On 2006-05-18 11:03, bc [EMAIL PROTECTED] wrote:

I want to run 6.1_RELEASE with Packet Filter(PF) configured as
a gateway using 2 identical 10/100 nics, on an old 450mhz
pentium with 256 meg ram and an 8 gig HD.

In general, should I expect any speed performance issues with
internet access base on the processor, ram and bus speeds of
the MB?  Would the PF config cause any speed performance
deficiencies?

I had same setup as above but with IPF firewall and received
complaints about surfing speed so I put them back on a Linksys
router firewall.


We'd have to see the ruleset to be able to reply in an informed
manner.  I have seen firewalls doing both filtering  NAT on a
system, with almost no overhead at all though.

This top output:

http://keramida.serverhive.com/pixelshow-top.txt

shows that a FreeBSD 5.X system with 256 MB of physical memory is
happily filtering the traffic and doing NAT for more than 100
users, while still being 97% idle.



I would think it is more than CPU speed.  The speed of the PCI bus  
and the speed and efficiency of the two network cards being used and  
their drivers may have a bit to do with latency (surfing speed)...


Just a guess
Chad

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