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Sophos UTM 9.705-3 Intrusion Prevention

Hello,

I appear to be having some trouble with the Intrusion Prevention on my UTM. When I have Intrusion Prevention enabled, my network speeds are reduced dramatically. For example, my WAN connection; with and without Intrusion Prevention enabled:

Enabled - Download: 98Mbps
Disabled - Download: 206Mbps

I have tried changing various settings within Intrusion Prevention (whilst still having it enabled), but this made no improvement in the network speed. I had a look in the live-log whilst trying a speedtest and I had a large amount of this entry:

S5: Session exceeded configured max bytes to queue 1048576 using 1053000 bytes (client queue).

I tried doing some searches online for this but I can't seem to find anything other than it's nothing to worry about... but I'm pretty sure this is telling me what the problem is? Is it possible to increase the max bytes to queue? I'm currently using only 35% of 8GB RAM on this box.

Cheers,
Richard



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