Category: Archive

SCO Openserver release 5.0.7

Disclaimer

There is a lot to like in the 5.0.7 release of SCO Openserver. Support for IDE CD-RW and DVD-RAM (you need other tools to actually write to this media, but the important kernel support is built in), more USB devices (though not printers or modems), P4, Xeon, and AMD Athlon processors, UDMA 100 and 133 hard drives, PCI serial and parallel cards, LS-120 and LS-240 IDE drives (see “man Sflp”, not “sflp” as the documentation suggests) , several Gigabit network cards, and more PCMCIA support.

The Netscape server is gone, replaced by Apache, OpenSSH is built in, sendmail is at 8.11 (which of course will need immediate updating), and you now have a choice of Mozilla or Netscape for GUI browsers and Lynx is included for character mode.

Understanding IPTABLES

Disclaimer

Packet filtering is something I’ve always hard a hard time getting my head around. Not the basics; that’s easy
enough. It’s just the incredible level of detail, the difficulty of keeping it all in your head at once.

And then, of course, there are all the different flavors: ipfw, ipfilters, ipchains, and now iptables. It gets more
than a little confusing, and I’ve never taken the time for more than a cursory look at any of them.

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