Re: [squid-users] Help with accelerated site

You seemed to have missed my note quoted below.

<quote>
I would suggest to stick with the accelerator and let your inside guys
hit your server on port 80.
1) Put your backend server back on port 80

http_port 80 accel vhost defaultsite=www.mysite.org
cache_peer 192.168.1.3 parent 80 .... whatever I had in my config should
be fine once you change my 81 to 80. I needed to use 81 since I had
both apache and squid on the same machine. You do not have this problem.
</quote>

This presumes that your inside guys are on the 192.168.3.x network. They
do not need proxying to reach the 192.168.3.1 server since it is on the
same subnet. I assume that they do not need proxying to get outside
since you router probably handles that for them.

I am not sure how the outside world reaches the Squid proxy but I assume
that you have a NAT in the router that gets them from a public Internet
address on the router to the Squid server on port 80.

Do you really need proxying for your inside guys or are they perfectly
happy going out to the public Internet normally though your router and
can directly address the back-end server without Squid if the backend
httpd is on port 80?

The only case where you need to use port 81 is where squid and the httpd
server are on the same machine and you want port 80 to belong to squid
and squid needs to pass its requests to httpd on another port.

3128 is for proxying internal browsers on a non-routable network
192.168.x.x where you do not have a router that is NATing the inside
guys for you. Squid will handle the mapping of outgoing requests and
responses by giving the Internet a routable address. It requires that
the inside browsers be configured to use a proxy and not try to bang on
port 80 but use 3128 on the proxy for all requests.
It does not seem that you need this since your router likely does this
for you.

I suspect that you only have to change the 2 lines in the out-of-the-box
squid to get this going.

Ron

Adam_at_Gmail wrote:
> Hi Again,
> Well my local network can't access the Internet since I had to put the
> vhost option on the http_port 3128
> They can access my sites internally not a problem, but the problem is
> they can no longer access the internet
> I have kept the original config
> The only thing I have changed was adding the acceleration mode for my
> backend server (sites) and add the vhost option after
> the http_port 3128
> like this
> http_port 3128 vhost
>
> I hope that makes more sense
> Regards
> Adam
> ----- Original Message ----- From: "Ron Wheeler"
> <rwheeler_at_artifact-software.com>
> To: "Adam_at_Gmail" <adbasque_at_googlemail.com>; <squid-users_at_squid-cache.org>
> Sent: Sunday, March 28, 2010 8:40 PM
> Subject: Re: [squid-users] Help with accelerated site
>
>
>> Are you trying to build an accellerator for your site or a proxy.
>>
>> Pick one and get it to work.
>>
>> The config that I sent you is an accelerator.
>>
>> I would suggest to stick with the accelerator and let your inside
>> guys hit your server on port 80.
>> 1) Put your backend server back on port 80
>>
>> http_port 80 accel vhost defaultsite=www.mysite.org
>> cache_peer 192.168.1.3 parent 80 .... whatever I had in my config
>> should be fine once you change my 81 to 80. I needed to use 81 since
>> I had both apache and squid on the same machine. You do not have this
>> problem.
>>
>>
>> This way your inside guys are still hitting your backend the old
>> fashioned way and your clients are coming through your front door
>> with a caching proxy.
>>
>> Get rid of the acl stuff until you get it going and then decide how
>> to block people.
>> Check my acl settings but I do not recall doing anything to control
>> access.
>>
>>
>> KISS
>>
>> Good luck
>> Ron
>>
>>
>>
>>
>> Adam_at_Gmail wrote:
>>> Hi Amos,
>>> Thanks for your time
>>> at the moment my config is as follow it's working as far is the
>>> acceleration mode is concerned
>>>
>>> http_port 80 accel vhost defaultsite=www.mysite.org
>>>
>>> cache_peer 192.168.1.3 parent 81 0 no-query originserver name=main
>>> acl out_sites dstdomain www.mysite.org www.mysite.com
>>> www.mysite.net
>>>
>>> http_access allow our_sites
>>> cache_peer_access main allow our_sites
>>> cache_peer_access deny all
>>>
>>> I can access my 3 websites from inside my network and from the
>>> "Internet" no problems
>>> apart for it being a little slower than before, but it's working
>>>
>>> The problem I have right now is None of clients can access the internet
>>> The error as before "The requested URL could not be retrieved"
>>>
>>> here is the other part of config
>>>
>>> acl manager proto cache object
>>> acl localhost src 127.0.0.1/32
>>> acl to_localhost dst 127.0.0.0/8.0.0.0/32
>>> acl localnet src 10.0.0.0/8
>>> acl localnet src 172.16.0.0/12
>>> acl our_network 192.168.1.0/24
>>>
>>> http_access allow manager localhost
>>> http_access deny manager
>>>
>>> http_access allow localnet
>>> http_access deny all
>>>
>>> http_access allow our_network
>>> http_access deny all
>>>
>>> htcp_access allow localnet
>>> htcp_access deny all
>>> icp_access allow localnet
>>> icp_access deny all
>>>
>>> http_port 3128 vhost (note if I remove the vhost I won't access
>>> my websites) if I leave it I can't access the internet from my local
>>> network)
>>>
>>> No "Bind" error at this time
>>>
>>>
>>>
>>>
>>> I hope that would help see if there's anything wrong with the
>>> configuration
>>>
>>> Regards
>>> Adam
>>>
>>>
>>>
>>> ----- Original Message ----- From: "Amos Jeffries"
>>> <squid3_at_treenet.co.nz>
>>> To: <squid-users_at_squid-cache.org>
>>> Sent: Sunday, March 28, 2010 8:06 AM
>>> Subject: Re: [squid-users] Help with accelerated site
>>>
>>>
>>>> Adam_at_Gmail wrote:
>>>>> Hi Ron,
>>>>> Thanks for your reply and thanks for your time
>>>>>
>>>>> This is perhaps the 10th time I uninstalled it and reinstalled it
>>>>> And this is the very first time I could access my websites
>>>>> internally, externally nothing yet, I am still getting the error
>>>>
>>>> This error:
>>>>
>>>>> The following error was encountered while trying to retrieve the
>>>>> URL: /
>>>>>
>>>>
>>>> ... appearing in a reverse-proxy setup means Squid received a
>>>> reverse-proxy/accelerated request intended for a web server on a
>>>> port without "accel" flag configured.
>>>>
>>>>
>>>> Please read all my notes below right to the end of the email before
>>>> changing anything. I'm commenting on each fine detail and what it
>>>> means...
>>>>
>>>>>
>>>>> My clients can all access the internet, Yes I am sure that there's
>>>>> a misconfiguration in my config file but I followed every tutorial
>>>>>
>>>>> trying desperately to get something up, after a while you're
>>>>> saturated and very tired, bouncing from on issue to another
>>>>>
>>>>
>>>> ... so, we need you to stop bouncing and concentrate on one issue
>>>> at a time. When we are satisfied that you are understanding that
>>>> one move on ...
>>>>
>>>>> I checked and triple checked my iptables rules everything looks
>>>>> fine so far
>>>>>
>>>>> For instance, my backend server is listening right now on port 81,
>>>>> why did I put it on port 81 because I was getting
>>>>>
>>>>> Cannot bind to .... in the log file
>>>>>
>>>>> so I changed it to 81 and I am getting the same error, there's
>>>>> absolutely nothing else in my entire network that is using that port
>>>>>
>>>>> So why can't it bind to port 81? You see the type of things that
>>>>> can drive you through the wall
>>>>>
>>>>> at the moment I have only three machines
>>>>>
>>>>> A is Running the Proxy and the Router (IPTABLES)
>>>>>
>>>>> B is the back end server
>>>>>
>>>>> C is the DNS/DHCP servers
>>>>>
>>>>> And only the backend server that is currently listening on port 81
>>>>> and before that it was listening on port 80
>>>>>
>>>>> no matter which port I put in my config I get the "Cannot bind to
>>>>> ...." in the log file
>>>>
>>>> ... from the below I'd guess you are changing both the Squid
>>>> http_port and the apache listening "Port" entries at the same time
>>>> in your tests.
>>>>
>>>>
>>>>>
>>>>> here is a bit of my config
>>>>>
>>>>> *********************************************************************
>>>>>
>>>>> http_port 192.168.1.3:81 accel parent vhost
>>>>> defaultsite=www.mysite.org
>>>>
>>>> The tutorial and advice so far as I've seen has been to place Squid
>>>> listening on "http_port 80 accel vhost" and apache listening on
>>>> "Port 81".
>>>>
>>>> Okay stop here. Check that. Make it so. Restart both software if
>>>> needed.
>>>>
>>>> If another "bind" error comes up during the restart let us know
>>>> right now.
>>>>
>>>>
>>>> Continue reading...
>>>>
>>>>>
>>>>> cache_peer 192.168.1.3 parent 81 0 no-query originserver name=main
>>>>>
>>>>
>>>> Those two lines are (or 'were' right?) a loop.
>>>>
>>>> Squid listening on 192.168.1.3 port 81 is to fetch requests from
>>>> source server listening on 192.168.1.3 port 81.
>>>>
>>>> What you should have after my suggested change above is:
>>>> Squid listening on port 80 fetched from server on port 81.
>>>>
>>>>
>>>> Test this:
>>>> fetch a request for http://192.168.1.3:81/
>>>> EXPECTED: results in the apache "it works", or your <VirtualHost *>
>>>> site.
>>>>
>>>> fetch a request for http://192.168.1.3/
>>>>
>>>> EXPECTED: results in the apache "it works", or your <VirtualHost*>
>>>> site. Received through Squid.
>>>>
>>>>
>>>> (using wget, curl, or squidclient to display the response errors
>>>> the second fetch there should contains Via: header which is not
>>>> present in the first fetch.)
>>>>
>>>>
>>>> IF (and only if) there was no "bind" error, and the headers check
>>>> above fails to show a Via: header properly. We work on that in next
>>>> email...
>>>>
>>>>
>>>>> acl dstdomain our_sites dstdomain www.mysite1.org
>>>>> www.mysite2.com www.mysite3.net
>>>>>
>>>>> http_allow_access main allow our_sites
>>>>>
>>>>> http_peer_access main deny all
>>>>>
>>>>> At the moment all of these sites are running on the same server
>>>>> (virtualhost)
>>>>>
>>>>> The only thing I am not sure of is probably the cache_peer directive
>>>>>
>>>>> "cache_peer 192.168.1.3 parent 81 0 no-query originserver name=main"
>>>>>
>>>>> If it's wrong then I don't know what to put in there
>>>>
>>>> The IP address and port of your Apache server.
>>>>
>>>>
>>>> Amos
>>>> --
>>>> Please be using
>>>> Current Stable Squid 2.7.STABLE8 or 3.0.STABLE25
>>>> Current Beta Squid 3.1.0.18
>>>
>>>
>>
>
>
Received on Sun Mar 28 2010 - 21:22:22 MDT