I did some further testing with netIO, here are a few numbers:

Within the Green network I get speeds of up to 110.100 KB/s.
Within the Orange network I get max speeds of 113.200 KB/s.
 From Green to Orange network with snort active 2.900 KB/s.
 From Green to Orange network with snort deactivated 43.520 KB/s.

I checked the system monitor for unusual high usage of HDD or CPU but 
didnt find anything. The CPU never spiked over 80% and the HDD also 
didnt show any unusual high activity.

I understand that having a firewall between the Orange and Green network 
will reduce the speed, but I didnt expect it to be reduced by over 50%.
43.520 KB/s from Green to Orange is something I can live with but I 
would rather keep snort activated.

Anyone has some tips why snort has such a huge effect on the speed?






Vassilis:
> Hello all!
> 
> I am having speed problems when I connect to my orange server through my 
> green workstation. FTP aswell as Netio gives me a top speed of 2MB/s 
> when I connect through the endian box, but when I connect directly the 
> orange server to the workstation (crossed cable), Netio gives me speeds 
> of up to 100MB/S.
> 
> To make a long story short, I tried every situation to find the problem 
> and found out that the problem lies within endian and specificly with 
> the intrusion detection system (snort). As soon as I disable snort, my 
> speed goes up to 40MB/s and when I activate it, the speed goes down to 
> 2MB/s.
> 
> Is that normal? Is there any way to have snort activated and keep a high 
> speed between my orange and green network?
> 
> I am using Endian 2.2 RC3, all NICs are Gigabit.
> 
> Thank you!
> 
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