ASP.NET web service UsernameToken Authentication

Hi All, 

I am trying to implement UsernameToken authentication on ASMX web service something similar to below example, username and password should be sent in secured soap header. I found the code only from client side(how to consume the service). But I want to implement it on the service side. Any suggestions? 

  <soapenv:Header>
<wsse:Security xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd">
<wsse:UsernameToken wsu:Id="UsernameToken-1" xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">
<wsse:Username>[user]</wsse:Username>
<wsse:Password Type="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-username-token-profile-1.0#PasswordText">[Password]</wsse:Password>
</wsse:UsernameToken>
</wsse:Security>
</soapenv:Header>

Thanks in advance.