As XMPP technologies have been deployed more widely, the open XMPP network has become a more significant target for attacks. This specification defines ways for XMPP server deployments to share information with each other and therefore handle such attacks in a more real-time fashion.
The basic approach is two-fold:
To establish a trust relationship with a peer, a server shall send a presence subscription request to the peer, just as is done between XMPP users.
The XMPP server software running at the peer MUST prompt the server administrators to approve the request. Methods for doing so are out of scope for this specification.
A problem report consists of an XMPP <message/> stanza containing a <problem/> child element. The following is an example.
The defined child elements are as follows:
|<contact/>||The JID of a person to contact directly.|
|<end/>||The time when the problem ended. Send empty element if still happening. Must conform to XMPP Date and Time Profiles (XEP-0082) |
|<incident/>||An incident number. MUST be a UUID as described in RFC 4122 .|
|<ip/>||The IP address where the problem originates.|
|<jids/>||Each <jid/> child contains the JabberID of an entity that is causing trouble.|
|<room/>||A chatroom where the problem can be discussed.|
|<severity/>||The seriousness of the problem, from 5 (least serious) to 1 (most serious).|
|<start/>||The time when the problem started. Send empty element if unknown.|
|<text/>||A natural-language description of the event. This element SHOULD possess an 'xml:lang' attribute. Multiple <text/> elements MAY be included, each with a different 'xml:lang' value.|
|<type/>||The type of problem. Defined values are "muc" for Multi-User Chat (XEP-0045)  abuse, "pubsub" for Publish-Subscribe (XEP-0060)  abuse, "reg" for account registrations (e.g., via In-Band Registration (XEP-0077) ), "spam" for|
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The Extensible Messaging and Presence Protocol (XMPP) is defined in the XMPP Core (RFC 6120) and XMPP IM (RFC 6121) specifications contributed by the XMPP Standards Foundation to the Internet Standards Process, which is managed by the Internet Engineering Task Force in accordance with RFC 2026. Any protocol defined in this document has been developed outside the Internet Standards Process and is to be understood as an extension to XMPP rather than as an evolution, development, or modification of XMPP itself.
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