Monitoring Linux firewalls with firelogd

    Date07 Jun 2002
    CategoryFirewalls
    4300
    Posted ByAnthony Pell
    Monitoring firewalls on a Linux system can be a challenge because of the text-based nature of the OS. The firelogd program can greatly improve the monitoring process by e-mailing concise summaries of important entries to an admin. . . . Monitoring firewalls on a Linux system can be a challenge because of the text-based nature of the OS. The firelogd program can greatly improve the monitoring process by e-mailing concise summaries of important entries to an admin.

    Having a firewall is important for overall security, but it's equally important to regularly monitor its logs.

    Log monitoring helps you track possible access problems, provides data on the effectiveness of your rule sets, and documents hack attempts.

    Monitoring such activity provides an excellent means to check out what's hitting your server and fix problems before they get out of hand. However, firewall logs tend to contain verbose network information in as compact a message as possible, which can be rather tedious to sift through.

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