Re: [squid-users] SSL/SSH/SFTP/FTPS to alternate ports

Sun, 12 Oct 2014 09:18:49 -0700 

On 12/10/2014 11:33 AM, Timothy Spear wrote:

B,

I was going to attach the logs, but I now feel like an idiot. :D
The jump box I am running Squid on, currently only allows 80 and 443 outbound. I recalled this when I went to scp the log files and the connection was refused.... I detest overlooking things like this. Sometimes, you really need question any assumptions. 

You are not alone! "Sometimes"->"Always"



Tim
On Oct 12, 2014, at 11:11 AM, crazy world <crazywo...@outlook.com <mailto:crazywo...@outlook.com>> wrote:
Do you have the log for the connection when you can't access? Other than 22 and 443 as you said. 

Thanks,

-B

------------------------------------------------------------------------
Subject: Re: [squid-users] SSL/SSH/SFTP/FTPS to alternate ports
From: n61...@gmail.com <mailto:n61...@gmail.com>
Date: Sun, 12 Oct 2014 10:49:05 -0400
CC: n61...@gmail.com <mailto:n61...@gmail.com>; squid-users@lists.squid-cache.org <mailto:squid-users@lists.squid-cache.org> 
To: crazywo...@outlook.com <mailto:crazywo...@outlook.com>
Here is the access log. I should have included it in the original post. This is accessing a test machine I setup to hit SSH on 22 and 443. I can also hit HTTPS on multiple other ports.
1413125068.706 87 10.110.98.21 TCP_MISS/503 0 CONNECTXXX.XXXX.com <http://xxx.xxxx.com/>:22 - HIER_NONE/- - 1413125086.496 8061 10.110.98.21 TCP_MISS/200 3657 CONNECTXXX.XXXX.com <http://xxx.xxxx.com/>:443 - HIER_DIRECT/54.68.15.208 -
Yes, my intent in the rule set is to provide a list of allowed ports and sites. 

Tim
On Oct 11, 2014, at 11:37 PM, B <crazywo...@outlook.com <mailto:crazywo...@outlook.com>> wrote: 

    check out your access log seeing what it says. Sounds like you
    are looking for an AFW from squid. The ports themselves are
    defined. You need to make sure the other ports are opened.

    Your rule tells squid to block the non-allowed sites to the
    non-allowed ports. Still sounds like FW function, but with the
    domain feature only.

    -B
    On 10/12/2014 7:48 AM, Timothy Spear wrote:

        Hello,

        Here is the issue:
        I can proxy through Squid just fine to HTTP and HTTPS. I can
        also run SSH via Corkscrew to a SSH server running on port
        443 and it works fine.
        What I cannot do, is access HTTPS or SSH on any other port
        except 443. I have lost track of the number of things I have
        tried so any help will be appreciated and I feel like I am
        missing something simple.
        OS: Ubuntu 14.04.1 LTS
        Squid: 3.3.8-1ubuntu6.1

        Here is my current Squid 3 configuration:


        debug_optionsall,3

        # local network we proxy for
        acllocalnetsrc10.110.98.0/24

        # what ports can be the desitnation
        aclallowedPortsport21
        aclallowedPortsport22
        acl allowedPorts port 2222
        aclallowedPortsport80
        acl allowedPorts port 443
        acl allowedPorts port 8443

        aclCONNECTmethodCONNECT

        # determine the available sites
        aclallowedSitesdstdomain"/etc/squid3/allowed-sites.squid"

        # now block anything not on the localnet or ports
        http_accessdeny!localnet

        # allow connect only for approved ports
        http_access deny CONNECT !allowedPorts

        # now only allow to the specific sites
        http_accessallowlocalnet allowedSites allowedPorts

        http_port3128
        access_log/var/log/squid3/access.logsquid
        hosts_file /etc/hosts


        Background (just FYI):
        I am trying to setup Squid to control network access from a
        local subnet to a select number of domains. I do not need to
        bump the encrypted traffic and play man in the middle, I just
        need to prevent the servers on the local network from
        accessing unauthorized networks. Yes, I know I can do this in
        the Firewall, but that is IP based and I am dealing with
        enough other companies that maintaining the IP list has
        become a major pain. Instead I want to use domains, which I
        can do in Squid.

        Thanks,

        Tim


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