A friend of mine overseas set up a firewall and asked me to port scan it so he could close up any unneeded services. I think thats a legitimate use of a portscanner.
I find that I reboot in Linux whenever I make any changes of significance just to know I didn't hose the system. I can't think of anything harder to track down as "which of the 10 changes I've made in the last 90 days caused this". If I don't reboot (or at least restart the (possibly) affected services) right away.
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A friend of mine overseas set up a firewall and asked me to port scan it so he could close up any unneeded services. I think thats a legitimate use of a portscanner.
I find that I reboot in Linux whenever I make any changes of significance just to know I didn't hose the system. I can't think of anything harder to track down as "which of the 10 changes I've made in the last 90 days caused this". If I don't reboot (or at least restart the (possibly) affected services) right away.