This configuration is largely outside of the scope of this article (though I'll To set up a single Syslog-NG server at a remote site which acts as a collectorĪnd relay for the log messages generated by all machines at that location, but Because Syslog-NG isĬapable of both accepting UDP-based log messages from standard Unix Syslogĭaemons as well as forwarding those messages to another machine, it is possible The rest of this article covers the basic configuration forĮstablishing an SSH tunnel between two servers and configuring Syslog-NG atīoth ends to communicate log messages down this tunnel. "best of both worlds" if you're looking for a quick and dirty
Ssh tunnel log full#
Tunnel this TCP communication via SSH rather than firing up a full VPN- the But once you're logging via TCP, then it is also possible to This is where Syslog-NG becomes attractive,īecause two Syslog-NG servers can share remote logging information using TCP Protect the security of the remote log stream does nothing to address the Messages across highly congested public networks. Lack of guaranteed delivery can be a factor for Syslog messages in LANĮnvironments, the risk becomes much greater when trying to drive remote log Protocol also means that important log messages can be dropped entirely. However, the fact that UDP is not a guaranteed delivery Information from some remote site then firing up a full-bore VPN session may Mitigate these concerns, but if all you care about is obtaining logging
Use of IPSEC or some other strong VPN product can certainly help Having critical system log messages traveling in clear text over public Locations very undesirable, to say nothing of the security implications of Makes drilling holes in your firewalls to accept Syslog messages from remote
Unauthenticated UDP messages to transmit log messages to remote servers. The difficulty is that the standard Unix Syslog daemon uses System(s) have been compromised by the attacker. Security incident when the local copies of the log files on the target Logs on some central, secure log server not only gives you greater visibilityįrom a systems management perspective, but can prove invaluable after a One of the points I make repeatedly in my training classes
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