Anti-Virus
Anti-Virus can scan incoming http (web) documents, ftp downloads, email and email attachments for viruses.
Figure 3.15: Anti-virus protects your network from invasion by infections outside the firewall.
Anti-Virus will work only on those connections visible in ConnectionView. In other words, connections made through the NAT will not be scanned by Anti-Virus. Classic or Transparent Proxy connections, each visible in the main WinProxy window, will be scanned.
You can enable scanning for the supported protocols on the Anti-Virus page. Once enabled, scanning works for all client computers connecting through WinProxy; you cannot exempt any machines. To ensure that scanning works for applications on the WinProxy machine itself, we recommend that you set up those applications to use Classic Proxy whenever possible.
When a virus is found within an http document, the download will fail. Users trying to reach the site again will instead receive a WinProxy browser document explaining that a virus was found in one of the files.
Email and email attachments are scanned completely before being passed on to the email program. If you have large attachments on a slow connection, users will notice that the "working" icon on the mail program spins endlessly; nothing seems to be happening-until the email is passed on all at once. If a virus is found, the infected email or attachment is discarded. Text explaining that a virus was found is added to the email message.
When doing ftp downloads using an ftp program (instead of a browser), the download appears to work fine for most of the file-but will then fail with several KB of the file undelivered. No other indication will be visible within the ftp program.
A fully-functioning version of Anti-Virus is included in WinProxy's 30-day trial version. When you purchase the software, Anti-Virus will be enabled for six months. During this period, WinProxy will download anti-virus pattern files once a week as a background operation. Anti-Virus works only during the licensed period. Thereafter, licenses must be purchased for additional time periods and upgrades. If the license lapses, you'll no longer be able to use the old filter list for access control. Licenses can be purchased from the WinProxy website or directly from our offices.
If you've download a trial version of WinProxy, anti-virus works for the entire 30-day trial period. When the software is purchased, anti-virus is immediately enabled for six months. During this period, WinProxy will download the anti-virus pattern files once a week as a background operation. To extend anti-virus operation beyond this period, you'll need to purchase extensions from our website or from our office. Extensions are available in one-and two-year increments, priced according to the user-version you have purchased (i.e., 3, 5, 10, 25 or an unlimited number of users).
