Sonicwall Signatures

Application: TFTP Protocol

Microsoft MSN Messenger is an instant messaging protocol created by Microsoft Corporation in 1999. It was rebranded as Windows Live Messenger in 2005, but that name has been dropped. It was reported to be used by hundreds of millions of users, within the various currently supported Windows operating systems, such as Windows 7, Windows Mobile, Windows Vista, and Windows XP. While it supports additional features, Windows Live Messenger is primarily an instant messaging client. Microsoft has now bought Skype and may be eventually discontinuing support for this protocol. It is a plaintext protocol that uses TCP/1863.