Upgrading Your linux Distribution mini-HOWTO: Review security.

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Check file permissions and directory permissions to be sure that access is neither too restricted nor too easy. I find that Slackware tends to lean toward a more open environment than I like, so I go around changing 755’s to 711’s for binaries in the …/bin directories and stuff like that. Or even 700’s in the …/sbin ones. Especial care is needed if you’ve carried over an ftp server; but then, if you were running an ftp server, you probably thought of that already. 🙂

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