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Web Application Firewall - Slow With Firewall Profile

jon8145
I have a number of web applications published (websites, RDS) which work fine.

However, if I then add a firewall profile to them the page load times go up dramatically - 30 seconds or more. I've tried various settings within the firewall profiles but even with the most minimal settings the problem occurs.

Anyone know what could be causing this?


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  • 0 in reply to BrucekConvergent
    Have a look here:  https://community.sophos.com/products/unified-threat-management/astaroorg/f/57/t/50273


    Thanks - looks like it's the same issue as I'm getting the dns lookup errors.

    I'll follow the other thread.
  • 0 in reply to jon8145
    I'm running 9.307-6 on a UTM 220. When block clients with bad reputation is enabled my WAF protected sites are EXTREMELY slow (more than 1 min) to load. If I disable "block clients with bad rep as suggested in the above link, my sites are speedy again.

    I'm also having an issue with my WAN interfaces going into "ERROR" link state, they go down and then come back up 10+ times per day. I have uplink balancing enabled on both wan connections. Sophos support looked into it said it was a DNS issue and that it was on the ISPs side however enabling\disabling the interfaces resolves the problem. Testing outside of the UTM on the ISP's end proves no problems there.

    I suspect something is amiss with DNS here.
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