Client was unable to finish security negotiation wcf wsdualhttp binnding

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WCF

webservice

HI,

i have developed an WCF application using wsdualhttp binding, and i have hosted it on a static live IP, my application works fine on my domain network but when i try to connect it from out side the network from other locations through the internet the time out exception accors with message "could not finish security negotiation."

i have went through googling a lot but still in vain, Please any one could help me ?

both the client's and servers firewalls are inactive...