Abstract: 3GPP TS 33.179 defines the group services and system aspects for the Security of Mission Critical Push-To-Talk (MCPTT) service. To create a group's security association, a Group Master Key (GMK) and associated identifier (GMK-ID) is distributed to MCPTT User Equipment (UE) by a Group Management Server (GMS). The GMK is distributed encrypted specifically to a user and signed using an identity representing the Group Management Server. The GMK is distributed within a Group Key Transport payload, which is a MIKEY-SAKKE I_MESSAGE, as defined in RFC 6509, which ensures the confidentiality, integrity and authenticity of the payload. In order to convey the MCPTT specific service in the MIKEY-SAKKE I_MESSAGE, this document defines new values for the Type field of the General Extensions Payload Field defined for MIKEY in RFC 3830 the ID Role field in RFC 6043 and the ID Scheme field in RFC 6509.

Abstract: The Third Generation Partnership Project (3GPP) has identified cases where different SIP private header extensions referred to as "P-" header fields, and defined in RFC 7315, need to be included in SIP requests and responses currently not allowed according to RFC 7315. This document updates RFC 7315, in order to allow inclusion of the affected "P-" header fields in such requests and responses. This document also makes updates for RFC 7315 in order to fix misalignments that occurred when RFC 3455 was updated and obsoleted by RFC 7315.

Abstract: Anonymous mail can be analyzed to understand the characteristics of each email sent by analyzing the raw files from any email containing information about the specifications of emails sent, ranging from authentication user, subject, IP Address server machine, the computer's IP senders, from, to, and section header details more. Any email is the indication as an anonymous have specific characteristics that distinguish the legitimate email. The special characteristics form the circuit patterns, which are further identified and analyzed by the algorithm Greedy. Greedy will analyze whether the mail is anonymous or not. Analysis anonymous mail using a greedy algorithm that performed on the first mail server (vulnerable mail server) provide data that the legal category of mail as much as 13 emails (0.04%) while the number of anonymous email mail as much as 28 678 (99% more). Domination anonymous mail with a characteristic pattern "cfhjmq" of 99.12% indicates that the first mail server system still very vulnerable, so it's easy to do the exploitation by irresponsible people. The results of the analysis are different than the second server that has better security than the first mail server so that 100% emails are a legal.