Felipe Ferreira

NTFS ACL Behaviour
If propagate from parent is checked
the original folder permissions will totally be replaced by the new parent settings.
example:
Directory c:\temp\joe
permissions: joe RW , smith R
Copid to c:\temp\new
already set permissions: joe R, smith RW, mark R
the files copied will be set with those permissions.
Same happens with any file that is put in that folders, they will
immediatly take the ACL of the current folder and lose previously ACLs.

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How to reset ESX password 1. Power on the ESX server. At the Grub boot loader, select the “VMware ESX 4.0” entry and press a to modify the kernel arguments. 2. Add a space and the word single to the end of the list of arguments and press Enter. (Note that the first few arguments will scroll off the left hand side of the console.) 3. At the prompt, type the command passwd and press Enter. 4. Enter the command reboot and press Enter. ESX will boot normally.

This is related to my post about an entire class of security here

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This script allow us to connect to a remote server. It can be usefull when a client need remote support.
We can mail the script and ask him to execute it.

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Security Class Free
Download all Class Files(28mb)

All Exercises here Read more…

The famous Logmein solution does not work for Linux. There are other solutions like:
VNC,DynDns,forwarding ports, FreeNX, thightVNC etc…

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After a long search I found a nice TFTP server GUI for linux.
It is called tftpgui and written in phython by Bernard CzenkuszIt
Simple and easy as it should be: Read more…

Nessus is one of the best security auditing tool out there, it has been developed by Tenable Network Security.

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Need to check for open relay servers, here is the script I wrote in perl to auto check from a list of IPs or Hostnames.

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This week I setup a cool Squid Proxy for our network at the office. What it does?
Follow also the HowTo Setup SquidGuard
1. Caches the websites people visit, so it usess less bandwith and improve performance
2. Allow managers to review web usage,
3. Allow restriction of certain webpages, content etc…

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