I am using Windows 97. I need to disable IPv6 group policy is there any way to do the same. Please provide with steps will be more useful

I have a router that provides both wired and wireless network. The input cable is Ethernet and there are a total of three people in my house, who use the internet. Two of us use cables and one uses a wireless connection. I also use a wireless connection on my tablet. I have installed a genie software on my computer that informs me whenever another connection is made on the network. Now the software is showing 6 people connected yet it is supposed to be 4 devices. Has someone intruded my network? How do I block them off? Can I find out who that is?

I have a Local area network that runs on an open authentification, however a friend informed me about MD5 challenge protocol for logging in an address. How do I set up such in my office and how would i run this? my office is a 5 computer based office, I need to set this up fast

I recently upgraded to the new avast internet security and the problem is the computer that has been sharing the internet now cannot establish an internet connection, what could be the problem? Can this be rectified or should i downgrade to the normal avast.? I have tried to check for the antivirus firewall but cannot find any service related to the ICS.

I have a USB wireless adapter and i have been trying to establish a connection to a wireless secured network on WPA and keep on getting an error message? I have the right password but the connection still does not go through, what else could be the problem? Can it be rectified?

how can I resolve the problem of access restriction in server? We implement a phone home access restriction approach in securing our server from attacks. Whenever a legitimate user try to connect to the server, the server will verify the authentication key for the user and this was working until recently when the server stop verifying any user thereby locking potential user out. What could be the cause of the problem?

Why is my fail2ban not working on my server? I tried to using fail2ban on my server to prevent brute force attack, but getting fail2ban working is a serious challenge. I tried log in multiple time in a row and my IP address was not blacklisted. Fail2ban is running fine but it is not blocking IP. What could be the cause of this problem?

How do I set up fail2ban to secure Ubuntu server? I recently install the latest fail2ban (Version 0.9.1 release) to secure Ubuntu X64 server, I have whitelist the administrator Ip range but am sure it may not be secure. Is it possible to set up fail2ban to ignore dynamic IP other than the default ‘ignoreip’? If not, what other secure option can I use to achieve this goal?

How to run different separate Virtual Machines do improves the overall security of the server? An idea has come to my mind that if three separate Virtual machines (VMs) was use for database server, web server and the data analysis server, the overall security of the server may be improved. Is this true?

Someone just plugged in a bad flash drive or downloaded a Malware in one of the computers on the network in the library. As all the computers are interconnected, the Malware has progressed and attacked the entire network. What can I do to efficiently remove the Malware? It keeps on coming up. Also what is a good network strategy so that all the computers do not get attacked? Please help.