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  1. #1
    fti
    fti is offline
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    Default Untangle as web Proxy

    Hi all,

    is possible to configure Untangle to act as a cached proxy server (with web filter capability)? I wouldn't less the possibility to cache user contents and speed-up internet connections.
    Thanks in advance.

    Bye,
    Alf.

  2. #2
    Untangle Junkie dmorris's Avatar
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    Untangle can do web filtering, but does not currently do any caching.
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    If you need Untangle support please call or email support@untangle.com

  3. #3
    fti
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    Thanks for the reply.
    But so can I configure Untangle as proxy in the clients' browsers?

  4. #4
    Untangle Junkie dmorris's Avatar
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    Untangle is a transparent proxy - meaning you don't have to change any settings on the browser.

    Untangle will transparently catch any web traffic going through the server and process it (spyware, virus, web filter, ips, etc)
    Attention: Support and help on the Untangle Forums is provided by volunteers and community members like yourself.
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  5. #5
    Untangler
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    What do you mean by 'transparent proxy'? A transparent proxy is still a proxy server that acts as middle man that the routing redirect to it (any web port 80 -> redirect to transparent proxy [plus content filtering plugin db] -> outside network). There is still a proxy setting port if Untangle is acting as 'transparent proxy'. What is the port number of untangle transparent proxy?

    When I used outside anonymous proxy setting that uses port 80. I can get away from the filter so it doesn't seems like it's being filter web traffic.

  6. #6
    mdh
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    There is no port number. It has no choice but to connect through the Untangle server, unless it is connected on a subnet where there is no Untangle server.

  7. #7
    Untangler
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    In order for traffic to get out of the network, it must go through the Untangle server (same subnet, bridge mode). Traffic get to Untangle internal interface, how is Untangle detects and filter its traffic? Where is the transparent proxy filter its url request comparing with the urlblacklist.com database?

    How can I get away from the filter when I set my browser to use public proxy servers with port 80? It's web traffic url request, it get to Untangle internal interface (LAN), by pass the filter and I can view www.playboy.com or any blocked sites. How can Untangle let the web traffic to by pass (both proxy use port 80 & url requests go to regular HTTP websites port 80).

    If I'm not wrong, Untangle is filter at the application layer but not network layer.

  8. #8
    Untangle Junkie dmorris's Avatar
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    sunflower, it transparently catches all tcp sessions and processes them inline.

    If you're using another external proxy, untangle will not process the traffic as http (because its SOCKS or TOR or whatever you are using).

    You can control these type protocols using Protocol Control.
    Attention: Support and help on the Untangle Forums is provided by volunteers and community members like yourself.
    If you need Untangle support please call or email support@untangle.com

  9. #9
    Untangler
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    Thanks dmorris.

    I just turn the Protocol Policy on for both SOCK and TOR and using the proxy server 202.105.182.18 IP that is working today. I'm still able to browse the web. Checked with tcpdump traffic and it's just a normal .www traffic request.

    15:20:16.773450 IP dhcp-172-17-4-56.mycompany.com.5781 > 202.105.182.18.www: P 924:1729(805) ack 439 win 6432 <nop,nop,timestamp 794037993 1975417744>
    15:20:17.763340 IP dhcp-172-17-4-56.mycompany.com.5781 > 202.105.182.18.www: P 924:1729(805) ack 439 win 6432 <nop,nop,timestamp 794038983 1975417744>
    15:20:18.208319 IP 202.105.182.18.www > dhcp-172-17-4-56.mycompany.com.5781: . ack 1729 win 9230 <nop,nop,timestamp 1975434592 794038983>
    15:20:18.734870 IP dhcp-172-17-4-56.mycompany.com > 239.255.255.250: igmp v2 report 239.255.255.250
    15:20:18.897205 IP 202.105.182.18.www > dhcp-172-17-4-56.mycompany.com.5781: . 439:1887(1448) ack 1729 win 9230 <nop,nop,timestamp 1975435239 794038983>
    15:20:18.897279 IP dhcp-172-17-4-56.mycompany.com.5781 > 202.105.182.18.www: . ack 1887 win 8688 <nop,nop,timestamp 794040117 1975435239>

    See my attachment images.

  10. #10
    Untangler
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    Default

    FYI that that proxy server is just a squid cache proxy server. I don't think squid-cache is SOCKS proxy.

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