CollabNet is aware of an SSL 3.0 (Secure Sockets Layer) vulnerability that allows the content of secured connections made over SSL 3.0 to be deciphered by an attacker.
In this context, to achieve secure encryption, SSL 3.0 must be avoided entirely. When you disable SSL 3.0, any client which has TLS 1.0 (Transport Layer Security) support will automatically switch to TLS and continue to work; you may not even notice the change.
Moreover, according to http://en.wikipedia.org/wiki/Transport_Layer_Security TLS 1.0 is supported by default, by Internet Explorer 7 and later versions.