SSO Domain Name in WebSphere Application Server

SSO Domain Name in WebSphere Application Server has some restrictions to use during Single sign on configuration. Recently while working for a customer on SSO setup, I faced issues related to SSO domain name.

One of the IBM Support link provides information what kind of name we can provide for SSO.

http://www-01.ibm.com/support/docview.wss?uid=swg21112390

As mentioned in the technote,

  1. Domain names must have at least one “dot” or period. This is an internet standard published in RFC 2109.
  2. Domain names cannot contain underscore ( _ ) characters. This was not a problem with earlier versions of Internet Explorer or Netscape browsers. However, Internet Explorer browser versions 5.5 and 6.0 do not accept underscores in the cookie. This is an internet standard. See RFC 1123 and RFC 932.
  3. Do not use the server name (such as machinename.ibm.com or hostname.ibm.com) in the domain name.

SSO Domain Name in WebSphere Application Server

I can use <site>.com or <subdomain>.<site>.com but I cant use underscore and without any periods in between website names.