Hi, I would like to use log4j's SyslogAppender to emit XML Audit Messages via BSD Syslog Protocol (RFC 3164) from various Health care client and server applications to a central Audit Record Repository, as specified by Integrating the Healthcare Enterprise (IHE) Integration Profile Audit Trail and Node Authentication (ATNA) in the IHE IT Infrastructure Technical Framework. (s. Vol. 1 (ITI TF-1): Integration Profiles [http://www.ihe.net/Technical_Framework/upload/ihe_iti_tf_2.0_vol1_FT_2005-08-15.pdf], Page 55ff).
There is no explicit requirement by IHE, that an ATNA compliant Audit Record Repository has to bind on the UDP port 514 assigned for syslog, Therefore clients must be configurable, to send Audit message to the repository host also to a different UDP destination port than 514. With the current version of log4j's SyslogAppender you cannot use a different UDP destination port than 514. The attached patches (one for current trunk, and one for log4j-v1.2.9) would enable to configure any port number by new option "SyslogPort" - with using 514, as default behavior. It's no effort/problem, to use such modified MySyslogAppender and MySyslogWriter classes as proprietary extension of log4j, but perhaps a configurable UDP destination port of log4j's SyslogAppender sounds also useful for others.. Best Regards, gunter zeilinger Agfa Healthcare
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