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Myanmar's MPT internet connection မှာ proxy မသုံးချင်ရင် ဘယ်လို .....

edited February 2012 in Internet & Email
MZ မှ ညီအကို ညီအမ များခင်ဗျား...

ကျွန်တော်မှာ ခက်နေတာလေး တစ်ခုရှိတယ်ဗျ..

မြန်မာပြည်မှာ MPT connection ကိုသုံးရင် သိကြတဲ့အတိုင်း internet browser မှာ proxy server ထည့်ရတယ် ကျွန်တော်က proxy ကို မသုံးချင်ဘူး

Gateway တစ်ခုထားပြီး Internet Browser မှာ No proxy နဲ့ တန်းထွက်ချင်တယ်

စမ်းမိတာ တစ်ခုကတော့ Zentyal Gateway ကိုသုံးတော့ transparent proxy က http protocol တွေဘဲ အဆင်​ပြေတယ် https တွေ မထွက်တော့ဘူး

ညီအကို ညီအမများ အဲလိုမျိုးသုံးလို့ ရသလား မသိဘူးဗျာ...


  • edited February 2012 Registered Users
    Create a file called config.pac @ C:\config.pac with the following.

    function FindProxyForURL(url, host)
    {return "PROXY; DIRECT";}
    Go to proxy settings->Automatic configuration url-> file:///C:\config.pac
  • Registered Users
    I known from Ko Zaw Lin.
  • Registered Users
    koaungzawlatt ပြောပေးတာ ကျေးဇူးတင်ပါတယ်

    ကျွန်တော်က proxy ကို မသုံးချင်တာ auto detect proxy နဲ့လဲ မသုံးချင်တော့ အဲလိုမျိုးဆို လဲ အဆင် မပြေသေးဘူးဗျ Client Browser မှာ ဘာမှ မပြင်ဘဲနဲ့ (auto detect) လဲ မလုပ်ဘဲနဲ့ သုံးချင်တာ

    ဥပမာ. ကျွန်တော်က Gateway တစ်ခုထားမယ် (hardware or software router တစ်ခုခု) Client Gateway ကို ထည့်ထားမယ် Browser မှာ No Proxy ထားပြီး သုံးလို့ ရမယ် ရနိုင် မရနိုင်တော့ မသိပါဘူး စိတ်ကူးကြည့်တာ (MPT connection မှာ)
  • Registered Users
    You can use and proxy switcher Add-ons on your browser.
    Please try it.
  • Registered Users
    hmm...the following is what may work. if you are the curious type or feel that you do not fully understand the following or why it might work, it would help to know 1)networking basics(OSI model) 2)how to search for RFCs(standard protocol descriptions on which almost the entire internet is based. http 1.1 -> i think you already have a good feel around it so..i may be being redundant here :).

    i am assuming here that mpt proxy's open ports(not what you have to type in which is 8080) are 443,80 and 21 only. Another assumption is that it's squid proxy.

    Since this is your gateway into internet, you MUST go through this irregardless of whatever is used between you and that gateway. Whether you are changing the browser's proxy or putting hardware/software routers, you would still have to use that proxy information somewhere. And the problem with that is a large majority of services that uses(or dependant on)it will fail.

    Two reasons for failure:
    1)squid is a HTTP proxy with limited support for other kind of protocols and they must be manually enabled in squid config. a simplified way to think of why it doesnt work is to imagine trying to talk in ssh over port 80. it's roughly translated as "GET ssh://user:[email protected]:80", which is nonsense to the ssh server because it doesnt understand the GET command.
    However, there is an exception in http specification that will allow any kind of talk. It's HTTP CONNECT. https(443) requires it to work. squid will first establish a tcp connection to the target server and then it will simply transfer any data regardless of protocol.

    2) target port. even if the protocol problem is solved, squid will still limit access to other ports. Solution is to have a remote server that can translate the request coming through port 443.

    Looks like this.
    You--->HTTP CONNECT via proxy:443--->yourserver:443--->actual target.

    This process is generally called "tunneling". There are partial solutions that can work for limited scanarios. I am not going to talk about those(eg:ssh port forwarding). The followings can(i think)work for all cases.i also leave out long how-tos due to laziness. you can google them or ask specific questions later :D.

    Proxy Method
    * a standard proxy installed on local machine(squid is an example)
    * a remote proxy that is listening on port 443 and allow HTTP CONNECT(unusual configuration so you may need to set up your own, free proxy lists exist but ~99% are on 80,3128,8080)

    VPN Method
    * VPN is not a protocol. many things call themselves VPN. i refer to openvpn implementation cos AFAIK it's the only opensource and free implementation
    * a local vpn client OR
    ** a router that supports both VPN and proxy. these features may be added via firmwares(ddwrt,tomato). useful for internet cafe owners.

    Packet translator Method
    This method may be the simplest way to get it done.

    These use some form of vpn implementation or proprietary protocols to translate data packets and come in pairs:an encoder client and a decoder server.

    * you are restricted to using their servers(whereas squid or vpn you can use any servers)
    * you usually have to pay or the service quality will be limited.

    * almost all of them encode via http(will work as long as you can view any web page) and usually work out of the box


    Useful tools
    * Proxifer(best)
    ** not required, but without it you cannot use "no proxy" in the browser config(in most cases any way)
    * putty
    * telnet

  • Registered Users
    i forgot to mention "the onion router" or tor. it's a p2p based relaying protocol. i am not too sure whether it will work but i think it will with major bandwidth decrease. this is different from all the above because it is designed from ground up to be untraceble. however,flaws have been noted and a newer protocol called "phantom" was proposed. i am not sure whether there is any real working implementation of that.
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