Thanks David and Gavin. David, I checked into squidsafe and it looks great--I'm focusing on opensource as much as possible and while they have an opensource version it caps at 20 users (not simply concurrent users). Gavin, interesting you say that about individual caches--I had thought that but then on numerous (well, at least a few) locations on the web people talked about not needing caching capabilities of squid because they were using LTSP. I wonder if there is a configuration referencing a communal as opposed to individual cache? I appreciate your opinion on 2.6--that's what I think I'll focus on then at this time, too, since I don't want to delve into backports at this time. I read the 'quick start' (2 pager doc) and since I installed webmin there´s lots of help available :-) Though... can someone help with this? When I try to initialize the cache w/in webmin it gives this feedback: <pre>Initializing the Squid cache with the command <tt>squid -f /etc/squid/squid.conf -z</tt> .. 2009/03/08 16:26:38| parseConfigFile: line 113 unrecognized: 'max_filedesc 0' 2009/03/08 16:26:38| Creating Swap Directories FATAL: Failed to make swap directory /var/spool/squid/00: (13) Permission denied Squid Cache (Version 2.6.STABLE18): Terminated abnormally. CPU Usage: 0.000 seconds = 0.000 user + 0.000 sys Maximum Resident Size: 0 KB Page faults with physical i/o: 0 </pre>Any help is again, appreciated! David <div class="gmail_quote">On Sun, Mar 8, 2009 at 2:24 PM, Gavin McCullagh <<a href="mailto:gmccullagh@gmail.com" target="_blank">gmccullagh@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hi, <div> On Sun, 08 Mar 2009, David Groos wrote: > I´ve got an Edubuntu/LTSP setup and I´m working on getting squid going and > having quite a challenge with it--too much specialized/unknown vocabulary > for me. I don´t need squid for caching of objects since I´m using thin > clients, </div>Huh? I'm not sure I follow you here. Every firefox user, even on the one machine, will have their own small firefox cache directory -- they won't be shared. This is not at all a replacement for squid's caching. <div> > but want to use it for coordinating white lists with different groups of > users. I thought before I invest myself further in learning squid I > should first decide which version to use. Also, I´m going to be using > squidguard as an add-on. I understand that squid-stable is at 2.6 > currently and that is what I was working on. However, should I use > this version, install/invest in 2.7, move up to 3.0 or 3.1? I would > appreciate anyone´s opinion on this! </div>The Squid package in Ubuntu Hardy is squid v2.6 and squid3 is available as a separate package. I tried squid3 and it segfaulted repeatedly on me. I first tried backporting the later squid3 package from intrepid. That segfaulted too, so I'm using the default v2.6 version which is far more reliable. I'd like to look at v2.7, but I don't wish to maintain a backport if I can avoid it so I stuck with v2.6. We're quite a busy site -- our squid instance peaks at about 150 requests per second. Maybe a quieter site might not have the same stability issues. If you don't mind maintaining a custom compile, v2.7 is probably better than v2.6 but personally I'm holding off v3. Getting squid working is fairly straightforward. Tuning it to work well and maximise the cache hits can be quite involved. Gavin -- edubuntu-users mailing list <a href="mailto:edubuntu-users@lists.ubuntu.com" target="_blank">edubuntu-users@lists.ubuntu.com</a> Modify settings or unsubscribe at: <a href="https://lists.ubuntu.com/mailman/listinfo/edubuntu-users" target="_blank">https://lists.ubuntu.com/mailman/listinfo/edubuntu-users</a> </blockquote></div>