Jabber What is Jabber? collection of open XML-based protocols for messaging and presence information protocol adopted by IETF as XMPP.

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Presentation transcript:

Jabber

What is Jabber? collection of open XML-based protocols for messaging and presence information protocol adopted by IETF as XMPP (eXtensible Messaging and Presence Protocol) decentralized (no one “Jabber Server”) Flexible (more than just IM) Securable

Presence concept used to describe user’s availability and willingness to communicate like “away message” on AIM or “zaway” you can specify your status and your presence “away” and “at lunch” vs “away” and “gone for weekend”

Jabber ID resource can be any arbitrary string (usually name of client) if you want to be logged on twice, resources must differ each jabber id can have different presence

“Buddy List” Buddies must be “authorized” to view presence information You must add them, and they must approve it or vice versa Some clients (iChat, jwgc) get confused about this

Messages Stored If you send a message to someone who you have authorized and who is not logged in, it will be stored and displayed when they do log in Except when it’s not, because some clients get confused

Can be created by anyone Configuration is a bit tricky Unused rooms are “reaped” every so often

Jabber Clients Gaim (Windows, Linux, Athena) jwgc (Linux,Athena) - for advanced users only Uses kerberos tickets (windows and Athena) Can be used for AIM, MSN, Yahoo, Zephyr, much more Adium (OS X) - similar to GAIM

iChat Only iChat 3 (came with 10.4) works Has some bugs Not recommended yet, maybe in the future Bogus SSL error message

Our Jabber Server Domain: mit.edu Connect Server: jabber.mit.edu Jabber ID: your username Port: 5222 with TLS encryption Port 5223 with SSL encryption (iChat) Will not permit unencrypted logins

Possible Support Headaches Users attempting to use non-MIT etc) Confusion about buddy authorization procedure Stored messages showing up at login - check timestamps Unconfigured chatrooms locking out creators Unsupported clients

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