2 - You have three installation options: server, agent or local.
4 - If you choose 'server', you will be able to analyze all
5 the logs, create e-mail notifications and responses,
6 and also receive logs from remote syslog machines and
7 from systems running the 'agents' (from where traffic
8 is sent encrypted to the server).
10 - If you choose 'agent'(client), you will be able to read
11 local files (from syslog, snort, apache, etc) and forward
12 them (encrypted) to the server for analysis.
14 - If you choose 'local', you will be able to do everything
15 the server does, except receiving remote messages from
16 the agents or external syslog devices.
18 - Choose 'server' if you are setting up a log/analysis server.
20 - Choose 'agent' if you have another machine to run as a log
21 server and want to forward the logs to the server for analysis.
22 (ideal for webservers, database servers ,etc)
24 - Choose 'local' if you only have one system to monitor.
26 - More information at:
27 http://www.ossec.net/en/manual.html#starting