It's much better than having no antivirus.At the moment as a primary engine we use Avira. Avira had really good rankings on the latest results by independent organisations
Hi, AV scanning is not necessarily the issue or cause of slow http proxy websurfing.
You need to do some investigation into log files to see whether it is the IPS or your link speed. Basically each url is checked against a list. You can see the response time in the proxy log with the servers in ascending order. URL checking is more than likely your issue than anti-virus checking.
Transparent: In transparent mode, all connections made by client browser applications on port 80 (port 443, respectively, if SSL is used) are intercepted and redirected to the proxy without client-side configuration. The client is entirely unaware of the proxy server. The advantage of this mode is that no additional administration or client-side configuration is necessary, the disadvantage however is that only HTTP (port 80) requests can be processed. Thus, when you select Transparent as mode, the client's proxy settings will become ineffective.
Full Transparent Mode (optional): Select the checkbox Full Transparent Mode to preserve the client source IP instead of replacing it by the firewall's IP. This is useful if your clients use public IP addresses that should not be disguised by the proxy.
"Transparent" and "Full Transparent" are two different things. I assume you mean "Transparent" and did not also select the other.
In this mode, your computer resolves the server IP in a URL, so the DNS settings in your PC are important. How is that set?
I thought you were doing this at home - do you have an AD and an internal DNS in your network?
