Routers usually support one or more of the firewall features discussed previously. Router firewalls are usually available by default on low-end routers designed for Internet connections; they provide basic firewall features for blocking and allowing specific IP addresses and port numbers and use NAT to hide interior ...

XML firewalls generally protect Web services while residing in the DMZ between the hostile Internet and protected services. It is from this location they provide security policy enforcement for Web services and XML messages. To enforce security policy, the XML firewall validates message source, reads and modifies message headers, ...

‘Security is important for large enterprises, but not for a small company like mine.’ Not true! Security is essential for large enterprises that provide access to systems and networks for hundreds or thousands of people. But it is also an important concern for a small or medium sized enterprise. If ...

I was reading some forums about comodo firewall. Some users are not feeling easy in dealing with firewall. Here is a video tutorial to deal with this. 1. Go to http://www.personalfirewall.comodo.co... and download the firewall 2. ...

Last month i bought a new computer. I installed an operating system on it and no any antivirus was installed on it. Firewall was also inactive. I just started using ...

On virtually all systems (UNIX, Macintosh, Windows), programs call the function 'gethostbyaddr()' with the desired address. This function will then do the appropriate lookup, and return the name. This function is part of the sockets API. The key thing to remember about gethostbyaddr() is that it is virtual. It doesn't specify ...

The IP identification (ID) field is a two-byte field contained within the packet. Its sole purpose in life is allow IP packets to be fragmented: all fragments should contain the same ID as the original packet so that they can be pasted back together again. Most systems use the concept ...

A firewall is only a piece of the security puzzle, as it can only can protect your computer against certain types of attacks. A firewall should never be your computer's only protection. You always should combine a well-configured firewall with up-to-date anti-virus software and good system administration practices, such as: Turning off ...