Reduction in throughput (MB) when traffic passes through the firewall

[JenniferYado]

Hi,

I have the following network where a certain amount of 150MB was contracted on the L2L link.
Servers> Switch > FW > L2L link > FW > Switch > Servers

We performed throughput tests and noticed that the total MB is reduced to 60MB when the traffic passes through the FWs:Server > Switch > FW > L2L link > FW > Switch > Servers

We performed another test removing the FWs and noticed that the total 150MB is what we should have:
Server > Switch > L2L link > Switch > Servers

Therefore we conclude that the problem is in the FW since when the traffic passes through there we see a decrease in MB.
We have checked that the interfaces do not have problems at layer 1 level.

Any idea what's going on?

[the_rock]

I would start with cpview and see if there is anything unusual there. If not, run ethtool -S and also see from ifconfig output what errors show. You can also see this from interface config in web UI, just click on advanced or monitoring in upper right (cant recall the exact wording now).

Andy

[JenniferYado]

We have reviewed everything you mentioned but everything is fine in this part

[Chris_Atkinson]

How is the test being performed - are multiple concurrent connections used?

Which appliance do you have and which version/JHF?

What security blades are enabled, do you observe high CPU?

[JenniferYado]

It is a dedicated link. At the request of a third-party provider, they need the bandwidth to be 150 MB and to go through an encrypted channel.

This channel is only used for a synchronization of database servers. On the channel it goes like this:
Server -> SW -> FW -> L2L link -> FW -> SW -> Server

The problem is that when traffic goes through the VPN, throughput is significantly reduced. Better said, when it passes through the FW it decreases since tests were also carried out where they sent the traffic through another interface that does not use VPN and the traffic continues to decrease.

If they "remove the fw" by directly passing the traffic through the switch, something like this:
Server -> SW -> L2L link -> SW -> Server
It is seen that the throughput increases.

They have R81.20 JHF76 and it is a 7000 appliance 

It is not observed that the CPU is high.

[the_rock]

I see the point Chris made...can you send us output of enabled_blades from the fw, like below?

Andy

[Expert@CP-GW:0]# enabled_blades
fw vpn cvpn urlf appi ips identityServer anti_bot content_awareness qos mon
[Expert@CP-GW:0]#

[JenniferYado]

I don't have access to the FWs. I only have the cpinfo for these, but it seems to me that with the following we can see which blades are activated:

 

[AkosBakos]

Hi @JenniferYado 

And the third tip is the MTU. Tipically the MTU is 1500 on the interfaces. Do you have the same setting?

A

[JenniferYado]

Yes, I have the same setting 

[the_rock]

Also, see if below may help.

Andy

https://community.checkpoint.com/t5/Security-Gateways/81-20-Performance-CPU-issue/td-p/214709

[the_rock]

Maybe worth mentioning, if VPN tunnels are involved, below also would be relevant.

Andy

https://support.checkpoint.com/results/sk/sk73980