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security

This tag is associated with 7 posts

Windows 7 firewall service won’t start

Problem When you attempt to start the Windows 7 firewall service you receive the following error Windows could not start the Windows Firewall on Local Computer. For more information, review the system event log. If this is a non-Microsoft service, contact the service vendor, and refer to service-specific error code 5. If you look in […]

Windows 7 firewall service is missing

Problem You receive a message from the Action Center that the Windows Firewall is turned off. When you attempt to turn it on, you receive a message like this: Windows Firewall can’t change some of your settings Error code 0x80070424 If you go into Services, you will find that the Windows Firewall service is missing. […]

How to determine who is relaying mail through your Exchange server

Problem If you have relay access control properly configured, only authenticated users should be able to relay mail through your server. If you are still seeing messages being relayed, then it’s possible a user account has been compromised. This will allow you to see which users are relaying mail so you know which account has […]

Windows 7 prompts for password even though password protected sharing is off

You may run into this: You are sharing files between two Windows 7 computers on the same network. You go into the Network and Sharing center and turn off password protected sharing. You try to access the shared resource from another computer and it still prompts you for a username and password. Here’s what I […]

How to configure your Cisco router the easy way

Have you ever wished configuring a Cisco router was as easy as a run-of-the mill Linksys or Netgear? Cisco routers are extremely powerful but not-so-easy to configure unless you memorize a bunch of cryptic commands. Sure the ASDM makes it a litter easier but what if you want super-easy? I got tired of copying one […]

Dissecting and removing the SHV5 rootkit

Yesterday I noticed some odd behavior on one of the Linux servers that I maintain. For one thing, every time I would run ‘top’ or ‘ps’, I would see the following message Unknown Hz value! (75) Assume 100 I decided to run rkhunter to check for rootkits. Needless to say, I was disappointed to discover […]

Remove Personal Antivirus in 3 easy steps

What is Personal Antivirus? Personal Antivirus sounds like a wonderful program that might be good to have, right? Actually, it’s just one of an increasingly common type of malware called a rogue anti-virus or rogue anti-spyware program. It appears to be harmless or even beneficial on the surface, but it’s actual goal is to scare […]