[squid-users] Squid proxy incoming and outcoming connections?

Matus UHLAR - fantomas uhlar at fantomas.sk
Fri Feb 14 09:41:50 UTC 2020


On 13.02.20 16:18, Patrícia Sousa wrote:
>Enabling debug_options I can see that the wget from the machine computer to
>the Squid machine does not goes through the proxy. Any idea why?

Because you apparently haven't configured anything to use the proxy.

Squid is a proxy, not a firewall, and it does not block connections to your
machine. 

Also, SQUID can only support HTTP and HTTPS connections, not SSH.

SSH and other TCP connections can be tunnelled through proxy, but the
clients need to be configured to use HTTP proxy, if they support it.



>Felipe Arturo Polanco <felipeapolanco at gmail.com> escreveu no dia quinta,
>13/02/2020 à(s) 15:32:
>> For this, you need to use IPtables to block at the network level.
>>
>> SSH uses port 22/tcp but wget uses HTTP, it should have been blocked by
>> squid.
>> Enabled debug_options in squid to see why it was allowed.
>>
>>
>>
>> On Thu, Feb 13, 2020 at 11:10 AM Patrícia Sousa <psousadp at gmail.com>
>> wrote:
>>
>>> I'm using the squid proxy and I'm trying to block some connections
>>> (incoming and outcoming traffic) from a certain ip address. However, for
>>> example, if I deny all the connections (http_access deny all) it only
>>> blocks the connections that I made to websites for example, but if I use
>>> another PC and try to ssh or wget the PC that owns the proxy squid, it is
>>> allowed. How can I block the traffic from and to a specific IP or DNS? It
>>> is possible to do this with Squid?
>>>
>>> If not, what is the best way to do this?

-- 
Matus UHLAR - fantomas, uhlar at fantomas.sk ; http://www.fantomas.sk/
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