[K12OSN] transparent proxying with LTSP
bjohnson at independence.k12.ia.us
Thu Feb 23 14:42:19 UTC 2006
On Feb 23, 2006, at 8:24 AM, Mark Gumprecht wrote:
> I'm in the process of setting up IPCop as well. Anyone have
> dhcrelay working for ipcop? I'm trying to put an in-line filter
> with cop+ and still pass external dhcp requests. Or if some one has
> a better idea of how to accomplish that, I'm open. I would NAT, but
> it is a 1024 subnet and the middle of the school year... Also
> looking to get dansguardian on K12ltspEL for the labs.
> Luis Montes wrote:
>> Brad Johnson wrote:
>>> Greetings everyone,
>>> I am in the final stages of completing our first large LTSP lab.
>>> In the past, I have been setting the proxy settings inside
>>> Firefox, but would prefer to do this transparently. Does anyone
>>> have any experience doing this with ipchains, or any GUI-based
>>> firewalls? What is your advice? I'd also prefer to redirect to
>>> an existing squid/dansguardian proxy that I already have, but I
>>> can live with setting up an additional proxy if I have to.
>>> K12OSN mailing list
>>> K12OSN at redhat.com
>>> For more info see <http://www.k12os.org>
>> What are you using for your existing proxy? I've used clarkconnect
>> in the past on a seperate box, but now I'm using ipcop.
>> Both can be setup as transparent filters, but ipcop(with the cop
>> plus addon) lets you schedule automatic blocklists for free.
>> I believe Eric has also done some dansgaurdian/squidgaurd work in
>> k12 as well.
Ok guys, after a little googling, here is what I came up with. Now,
before I do this, please know that I am not currently running ANY
type of firewall on this LTSP box. If I create the following entry,
do I need to then create additional entries to allow other types of
traffic? I don't want my LTSP box to stop working because of the
iptables -t nat -A PREROUTING -i $INTERFACE -p tcp --dport 80 -j DNAT
--to dansguardian/squid box:8080
Someone please tell me it's this easy!
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