FOLLOW THE INSTRACTION 

slowdns : fast tunneling tool : vpn over dns [ http://slowdns.com ] ( powered by tunnelguru)
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*** delete "dnshelp.txt" file from inside /tg/misc folder if you dont want to see it everytime ****


help: how to find the best working dns settings for your network:

======================= tools ======================================

free downloader tool: http://www.speedbit.com/dap/download/
test download file: http://proxy.tunnelguru.com/speedtest.zip


===================== modes =========================================

mode 1> payloadlength = 150 - encoded dns name - txt with encoded response - select keep changing source port.
mode 2> payloadlength = 250 - encoded dns name - txt without encoded response - select keep changing source port.
mode 3> payloadlength = 250 - encoded dns name - null record - select keep changing source port.

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how?
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select 1st dns server from the 2nd dropdown .it is your local isp dns server. to get better speed you should find out secondary dns server and append it with existing.
[pls see below - how to find local isp secondary dns server]
apart from your local isp dns server you can try other popular public dns server if those are working for you like - 8.8.8.8,8.8.4.4

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step 1:
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set mode-1 and connect vpn. see if you can download above file using dap ( for 1 minutes )( note download speed )

>if mode-1 works

set mode-2 and reconnect vpn. see if you can download above file using dap ( for 1 minutes )( note download speed )

>if mode-2 works consider it as the best settings for you.

>if mode-2 does not work

set mode-3 and connect vpn. see if you can download ( for 1 minutes )( note download speed )
>if mode-3 works better consider it as best settings for you.

> if mode-3 does not work , dns tunnel will not work for you.

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step 2:
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once you find out best working settings, just increase payload length gradually ( lower to upper ..like 250,275,300..)
reconnect vpn and test download speed...
and find out higher working payload length.


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step 2:
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once you have found out best settings with optimal payload length , uncheck- 'select keep changing source port'
test download speed with above tool.

if you see unchecking it has not decreased your speed , .permanently uncheck it – [must]

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step 3:
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you need to try other dns servers listed in dropdown like - 8.8.8.8 , 8.8.4.4 etc to find out better dns server for you.


done !!

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how to find local isp secondary dns server
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you can check it in isp modem dialer interface.

normally if your primary dns server ip is 10.10.10.10
secondary dns is 10.10.10.11

verify it :

open command prompt and type following

nslookup google.com 10.10.10.11

if the server exists it will give google ips

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note:

## if checking <keep changing source port> does not increase dns tunnel speed , you must uncheck it again for better stable connection ####

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enjoy!