phaq

Not long ago a friend of mine generously donated me a Sun E450 server for use with my current networking projects.

The machine came along with four IBM DDRS34560 hard drives. Since a capacity of 4 GB per drive is not that overwhelming by today’s standards I was looking forward to incorporate them into a RAID5 array.
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It was not very obvious and took me quiet some time to find out why two recently acquired Sun SS20 machines did not recognize IBM SCA hard drives.
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This article has been obsoleted by the final release of VMware Server 1.0.
It is left here as a reference only.

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Following up to my previous post on disabling debugging im VMware Server Beta I played around with altering the virtual machine vmx configuration files directly.
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For obvious reasons there is a lot of howto’s on FreeBSD jails. One of the IMHO best is, besides the man page , at section6wiki.

While the howto explains everything you need to get started, I was fiddling around with a way to install a trimmed-down userland to a jail without editing or moving around /etc/make.conf. The reason to do this is simple: The system in question was not solely decicated to running jails and I wanted to avoid the toolchain within the jails at any cost. So I basically looked only for a simple and fast way to install the userland without tampering with my existing configuration.
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pf-clamsmtp is a perl-written policy filter for use with Postfix and clamsmtp primarily written for one purpose: pass messages to the clamsmtp virus filter only if they don’t exceed a given size.
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Back in 2002, the guys at init7 have developped a concept to protect anonymous dial-in from being abused by spammers.

The original concept as outlined here consists basically of three combined efforts:

#1 Redirect SMTP Connections to a SMTP proxy on the core router

#2 Enforce rate limits on the SMTP proxy

#3 Temporary reject source IP which have exceeded their limits

Inspired by the basic concept I started to implement it at our site.
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