Guruhowtos

This sendmail directive implements the number of allowed recipients of each email message. One signature of an email spammer is delivering an email to thousands and hundreds of recipients all at the same time. This sendmail directive prevents that.
MAX_RCPTS_PER_MESSAGE
If an email message comes with more than the allowed number of recipients per message, the excess [...]

With default Squid rpm installation, the default value of squid cache directory swap size is set to 100MB. Having a large disk storage would be efficient to store a larger directory swap size for squid to use.
Simply edit /etc/squid/squid.conf and find the cache directory squid directive
cache_dir ufs /var/spool/squid 100 16 256
/var/spool/squid is the directory folder [...]

This entry aims to address file handling of RAR file types. If you are receiving this type of files from your inbox, you can configure your fedora linuxsystem to support RAR compressed file types.
Fedora repository supports rpm package designed to handle and uncompressed RAR file types via unrar rpm package.
UnRAR Installation – Support RAR File [...]

Mass SQL Injection Attack Evolution
Monday, December 8, 2008

Priority: HIGH
Impact: Potential for database corruption or malware to be distributed to website visitors.
Resolution: Verify blocking policy in web application firewall. Remediate the following web application and database flaws:
1. Poor/missing input validation of user-supplied data in the web application.
2. Poor/missing output [...]

When you run Windows Update from your PC or Laptop, you may be faced up with the error code 0×8DDD0018.
This could happen if the Windows Update Service has a problem and fails to start or if there is a problem with Windows BITS service.
To resolve this problem try the following:
1. Click Start – [...]

Windows Server 2008/2003, Windows Vista, Windows XP and Windows 2000 by default will respond to ARP requests only if the Ethernet address in an ARP request is unicast. The system will not respond if the incoming ARP request did not have a unicast source ethernet address.
However, in instance where required this action can be modified [...]

Joomla Content Management System was forked off Mambo CMS after most of the core Mambo developers disagreed with Mambo Management. The current stable release is 1.0.10. I migrated from Mambo to Joomla to deter hacking efforts on my site.
Note: I could have as well migrated to the latest version of Mambo but I just felt [...]

phpMyAdmin is a popular web based MySQL database management tool written in PHP. It allows you to protect the web interface using a password but many, either due to laziness or for convenience, decide to disable the password which can have serious consequence.

Since phishing attacks are aimed at users, user awareness is a key defense. The most promising method of stopping spear phishing is continuous periodic awareness training for all users; this may even involve mock phishing attempts to test awareness.
Less effective, but still valuable methods include:

Do not mass e-mail your customer base with web links directed [...]

TCP/IP is, as already stated, multi-layered. This means that we have one functionality running at one depth, and another one at another level, etcetera. The reason that we have all of these layers is actually very simple.
The biggest reason is that the whole architecture is very extensible. We can add new functionality to the application [...]