Rsyslog is an enhanced multi-threaded syslogd supporting, among others, MySQL,
PostgreSQL, syslog/tcp, RFC 3195, permitted sender lists, filtering on any
message part, and fine grain output format control. It is quite compatible to
stock sysklogd and can be used as a drop-in replacement. Its advanced features
make it suitable for enterprise-class, encryption protected syslog relay chains
while at the same time being very easy to setup for the novice user.

o lmnet.so - Implementation of network related stuff.
o lmregexp.so - Implementation of regexp related stuff.
o lmtcpclt.so - This is the implementation of TCP-based syslog clients.
o lmtcpsrv.so - Common code for plain TCP based servers.
o imtcp.so - This is the implementation of the TCP input module.
o imudp.so - This is the implementation of the UDP input module.
o imuxsock.so - This is the implementation of the Unix sockets input module.
o imklog.so - The kernel log input module for Linux.
o immark.so - This is the implementation of the build-in mark message input
module.
o imfile.so - This is the input module for reading text file data.