Postfix Spamfiltering

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• Oct, 05, 2009
• Angelo Schalley
• Linux

Introduction

After experimenting with basic anti-spam techniques within postfix I found out that those were not sufficient. Although it was dropping a lot of spam, I was also still receiving a lot. The reason for which I didn’t wat to install a spamfilter was because the are memory and CPU consuming. I actualy don’t want to waste any CPU cycles on those spamming bastards. I don’t even want to waste bandbwidth on them….

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root password recovery fedora core

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• Oct, 04, 2009
• Angelo Schalley
• Linux

Option 1:
1) Reboot (CTR-ALT-DEL) and at the lilo prompt type # linux single*
2) The kernel will load up and you will be straight into a root shell.
3) Now type passwd root to set the new password and reboot to resume operations.

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enable / disable icmp linux

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• Oct, 04, 2009
• Angelo Schalley
• Linux

disable:
echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_all  

enable :
echo 0 > /proc/sys/net/ipv4/icmp_echo_ignore_all