InterScan Web Security Virtual Appliance (IWSVA) 6.5 performance problem

We had some trouble with IWSVA to use the full download speed from our internet connection. Downloads are limit to 5 MB per second and not faster. After contactig support and a remote session. The support send me this solution.

After this, we can use our full internet speed with IWSVA



From @sysctl.conf in CDT:

By default, in IWSVA, window scaling is disabled.


– Set the TCP Windows Scaling from 0 to 1.

  1. Login IWSVA shell


  1. Open /etc/sysctl.conf


  1. Find and change the following parameter to the coresponding value.




  1. Run command “sysctl -p”

InterScan Web Security Virtual Appliance (IWSVA) 6.5 default password

Hamdan2020 Blog

After downloading latest software and patch for TrendMicro InterScan Web Security Virtual Appliance (IWSVA) 6.5 SP2 ( latest version ) on 25 Nov 2015 at URL –>

This website actually for those have proper Trend License only.The worst case part is Trend micro itself not telling everybody about default password .BTW,

Here is default username : admin 

password is “adminIWSS85″

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