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squid transparent proxy

Posted on 2010-01-02
Medium Priority
Last Modified: 2013-11-22
I'm currently attempt to setup a transparent proxy between my linksys router and my wifi access point.

The hardware setup like the following
Linksys Router --> Ubuntu PC (2 Network Card) --> switch --> Access Point --> Laptop
On the Ubuntu PC, eth0 is connected to the router, eth1 is connected to the switch

I've read on how to setup transparent proxy using squid and seems to done all setting properly. When I was about to test it, it realize that
1) eth1 doesn't have an IP
2) Computer connected to access point cannot obtain IP address

So as of this point, I can not test to see if my transparent proxy is working or not. So here are my questions

1) How do I make the laptop that's connected to the access point obtaining IP address from router? Do I need to setup DHCP service on Ubuntu PC and give a different IP range?
2) Do I set a static IP for eth1? If I do, should I setup the static IP in the same range as eth0? (eth0 now is, should I setup eth1 within or some other IP range like
3) On my Ubuntu box there is only Apache Server and Squid2 are installed, am I missing any applications?

Thank you all in advanced
Question by:geoffryf
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LVL 16

Accepted Solution

Blaz earned 2000 total points
ID: 26178153
You have two options - configure normally or configure Ubuntu as a bridge:

1) Yes you should install DHCP on Ubuntu
2) Yes, you should set the IP. The eth1 IP should be in a different subnet.
3) Only squid should be enough.

Bridge - you could configure the Ubuntu box as a bridge
1) The DHCP on Linksys will be used
2) The same IP as on eth0 will apply to eth1 as well (the IP of the bridge br0)
3) Only squid should be enough.


Author Comment

ID: 26188676
Thank you for your comments, let me give it a shot and I will get back to you.

Wish me good luck!
LVL 16

Expert Comment

ID: 29812216
I believe I gave two possible solutions to the problem and answer all the (three)questions that the asker had asked (and all three for both solutions).

So I believe I should get the points for this question since the asker did not have any further questions.

Author Closing Comment

ID: 31672004
Its working properly. I am sorry for not closing this post earlier.


Expert Comment

ID: 29813670
Sure: geoffryf just did not answer to decent proposals!

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