Yes obviously it is better to have a virus scanner if you can. But I was trying to point out why they can have such a massive effect on U2 databases and why IBM don't recommend them for U2 databases.
Ideally the best way is to design your network and systems so that a virus can't reach your back end systems anyway. This is the approach that we have taken and it is very successful. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Glen B Sent: 26 August 2004 17:00 To: [EMAIL PROTECTED] Subject: RE: [U2] [UV] Anti-virus recommendations for Universe on Windows? I'd prefer the entire file to be scanned every time. You never know if a virus is slowly plugging its bits into a file. A diff check on a file will not detect a known virus signature. The signature would be spread all over the file. Look at the B1 virus. It destroys FAT partitions by taking its time and deleting a link here and there. Nothing major to start with, until your files start to blow up one by one. :P A well programmed scanner with heuristic analysis can blaze through a 200MB file. "Most virus scanners" is a harsh term, considering I've seen 100-200%+ performance difference in scanning with 3 or 4 different scanners checking the same files. Every virus scanner has a focal point. Some focus on run-time checking, while another may focus on batch scanning or protocol sniffing. I've yet to find one that does it all extremely well and doesn't interfere with performance on a regular basis. F-PROT is about the best, overall, for all platforms. AVG is a great well-rounded tool for Windows. Panda isn't bad, but I still feel it's over marketed for what's really there. I remember them badgering me @ Comdex `99, every time I walked by their booth. Maybe I'm biased now? Sophos is OK, but it's popular enough to be a direct virus target. Does Sophos have integrity measures, to assure its own files can't be changed? I don't know how many times I've had to re-install Norton AV due to direct infection. I'm sure there are some other scanners that I haven't road-tested. For the most part, I'm happy with AVG on Windows and don't wanna look any further at the moment. If I was running X-windows, I'd have F-PROT running. After all, it was one of the first scanners and they have it down to a science now. I had the free version running on DOS 6.22 for my BBS back in the early 90's. Scary eh? Glen http://picksource.com > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Adrian Matthews > Sent: Thursday, August 26, 2004 9:57 AM > To: [EMAIL PROTECTED] > Subject: RE: [U2] [UV] Anti-virus recommendations for Universe on > Windows? > > > << so it only scans files that have changed.>> > > That's the problem with most virus scanners. Consider a 200mb file with > a million records in it. What do you think the virus scanner is going to > do each time a record (even one character) is changed in that file? > > Some of them must be intelligent enough to only access the parts of the > file that have changed, such as the higher level backup programs do now. > But I bet the majority will just see the file as changed and scan the > whole thing. > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > [EMAIL PROTECTED] > Sent: 26 August 2004 13:58 > To: [EMAIL PROTECTED] > Subject: Re: [U2] [UV] Anti-virus recommendations for Universe on > Windows? > > > Date: Wed, 25 Aug 2004 09:51:36 -0700 > > From: David Scoggins <[EMAIL PROTECTED]> > > ... > > We now are considering installing McAfee AV on the Universe > > servers anyway in light of this event. Does anyone have any > > recommendations regarding how to eliminate the McAfee/UV > > conflict, or is there a better alternative - e.g. Symantec/Norton, > > AVG, F-Prot, etc? > > Consider looking at Sophos (http://www.sophos.com). You can download an > evaluation version from their website, although you do have to register > to > get it. > > I don't use U2 on Windows, but I know that Sophos takes a very > non-intrusive approach and does not affect system performance as much as > Norton. The "on access" scanner keeps track of clean files, so it only > scans files that have changed. > > --Tom Pellitieri > Century Equipment > Toledo, Ohio > ------- > u2-users mailing list > [EMAIL PROTECTED] > To unsubscribe please visit http://listserver.u2ug.org/ > > > The information contained in this email is strictly confidential > and for the use of the addressee only, unless otherwise > indicated. 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If you are not the intended recipient, please do not read, copy, use or disclose to others this message or any attachment. Please also notify the sender by replying to this email or by telephone +44 (0)20 7896 0011 and then delete the email and any copies of it. Opinions, conclusions (etc.) that do not relate to the official business of this company shall be understood as neither given nor endorsed by it. IG Markets Limited and IG Index Plc are authorised and regulated by the Financial Services Authority and, in Australia, by the Australian Securities and Investments Commission. ------- u2-users mailing list [EMAIL PROTECTED] To unsubscribe please visit http://listserver.u2ug.org/
