Re: [squid-users] External Access to Proxy for School

From: Amos Jeffries <squid3@dont-contact.us>
Date: Sun, 20 Jan 2008 09:37:53 +1300

Mr Wells wrote:
>>> Tests:
>>> A) set a PC to x.x.x.104 using X-cable connect directly to proxyEXT external NIC - configure Firefox to x.x.x.103:3128 - Works
>>> B) from home - ping x.x.x.103 - Works
>>> C) from home - VNC into proxyEXT - Works
>>> D) tracert to x.x.x.103 - Works 17 hops
>>> E) from home - configure web browser to x.x.x.103:3128 - not working
>>>
>>>
>>> Test E) above. In Firefox I get a general error telling me the server took too long to respond. IE gives the DNS error page.
>>>
>>> These errors in E)above can be reproduced by configuring the web browser to a non-existent proxy. e.g. x.x.x.104:3128
> Thanks
>> step 1) is port 3128 open on the router? ie telnet x.x.x.103 3128
> Unable to test as yet - Telnet not installed.
>> step 2) is the router actually forwarding traffic from that port to
>> proxtEXT? wireshark/tcpdump will show this.
> I have no access to the router - it's ISP maintained - will forward your checks though.

You say earlier 'ISP sent replacement part', I took from that it was
maintained by them but housed with you. If so you can test with a
machine spoked from a HUB on the in/out cables of the router and watch
the traffic.

>> step 3) is squid proxy listening on pubic-facing IP (10.1.1.61) or
>> wildcard IP (0.0.0.0) at that port? netstat -antp
> Yes, netstat proved that it's listening on x.x.x.103 3128, and see test A above.
>

But no traffic exiting the router to the proxy machine?

Amos

-- 
Please use Squid 2.6STABLE17+ or 3.0STABLE1+
There are serious security advisories out on all earlier releases.
Received on Sat Jan 19 2008 - 13:37:27 MST

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