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<TITLE>The Answer Guy 48: lg #45: Limiting Internet Access through Cable Modems</TITLE>
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<!-- begin 49 -->
<H3 align="left"><img src="../../gx/dennis/qbubble.gif"
height="50" width="60" alt="(?) " border="0"
>lg #45: Limiting Internet Access through Cable Modems</H3>
<p><strong>From August Hrandl on Tue, 12 Oct 1999
</strong></p>
<BLOCKQUOTE>
more on: lg #45: Limiting Internet Access through Cable Modems
</BLOCKQUOTE>
<P><STRONG><IMG SRC="../../gx/dennis/qbub.gif" ALT="(?)"
HEIGHT="28" WIDTH="50" BORDER="0"
>
Hi,
in your answer you missed another possibility:
the squid proxy program can use ACL: you can easily set up allowed
access times for each clients and a lot of other stuff; squid can even
be used to filter certain sites. you also get log files and can check
which places have been visited
</STRONG></P>
<BLOCKQUOTE><IMG SRC="../../gx/dennis/bbub.gif" ALT="(!)"
HEIGHT="28" WIDTH="50" BORDER="0"
>
It sounds interesting. I'm not sure I'd
suggest squid as a security proxy. There seem to two
different classes of web proxy software, those for
firewalls (focus on security) and those for caching,
content filtering and features (like Squid).
</BLOCKQUOTE>
<BLOCKQUOTE>
However, you're right. I should have mentioned
that the features exist. I think you have to
get some Squid plugins for some of these features.
</BLOCKQUOTE>
<BLOCKQUOTE>
(It never ceases to amaze me how many Linux/UNIX
subsystems are "modularizing" with Perl modules,
<A HREF="http://www.apache.org/">Apache</A> modules, loadable kernel modules, Squid modules,
Netscape Navigator/Communicator plugins etc).
</BLOCKQUOTE>
<P><STRONG><IMG SRC="../../gx/dennis/qbub.gif" ALT="(?)"
HEIGHT="28" WIDTH="50" BORDER="0"
>
Gustl
ps: keep on the good work - i like your answers
</STRONG></P>
<BLOCKQUOTE><IMG SRC="../../gx/dennis/bbub.gif" ALT="(!)"
HEIGHT="28" WIDTH="50" BORDER="0"
>
I'm glad.
</BLOCKQUOTE>
<!-- sig -->
<!-- end 49 -->
<p><hr width="40%"><p>
<!-- begin 49 -->
<H3 align="left"><img src="../../gx/dennis/qbubble.gif"
height="50" width="60" alt="(?) " border="0"
>lg #45: Limiting Internet Access through Cable Modems</H3>
<p><strong>From August Hrandl on Wed, 13 Oct 1999
</strong></p>
<P><STRONG><IMG SRC="../../gx/dennis/bbub.gif" ALT="(!)"
HEIGHT="28" WIDTH="50" BORDER="0"
>It sounds interesting. I'm not sure I'd
suggest squid as a security proxy. There seem to two
different classes of web proxy software, those for
firewalls (focus on security) and those for caching,
content filtering and features (like Squid).
</STRONG></P>
<P><STRONG>
However, you're right. I should have mentioned
that the features exist. I think you have to
get some Squid plugins for some of these features.
</STRONG></P>
<BLOCKQUOTE>
<DL><DT><IMG SRC="../../gx/dennis/qbub.gif" ALT="(?)"
HEIGHT="28" WIDTH="50" BORDER="0"
>there is a nice guide at
<DD><A HREF="http://info.ost.eltele.no/freeware/squidGuard"
>http://info.ost.eltele.no/freeware/squidGuard</A>
</DL></BLOCKQUOTE>
<BLOCKQUOTE>
i had to solve another problem:
i am teacher and net admin in a technical high school; we have full
internet access - but it is impossible to teach anything if the internet
is accessable
<IMG SRC="../../gx/dennis/smily.gif" ALT=";-)"
height="24" width="20" align="absmiddle">
so i had to find a easy solution to "toggle" a whole
classroom (= a subnet). i did it via a little script (which includes menues
via dialog), which creates a file with acls for squid. teachers are allowed to
call the script via sudo (needed to restart squid)
</BLOCKQUOTE>
<BLOCKQUOTE>
Regards
Gustl
</BLOCKQUOTE>
<p align="center"><em>* * * Linux... Don't fear the penguins * * *</em>
<br>August Hrandl
</p>
<!-- end 49 -->
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