firewall
firewall
Yes, DES can be used for network security, but it is a rather weak one that can be cracked easily.
Network security can be done in a variety of manners. In general, the methods to perform network security involve constantly updating hardware and software to combat potential computer threats.
There is no one person "responsible" for network security in terms of "inventing" it. There are many people over a period of decades that have contributed to some aspect of security.
yes
There are several companies in London that can offer one with network security assessment in London. There is Calyx, Commissum, and Computer Network Defence.
There are numerous places to get network security tutorials. For those that are visual learners, one such place would be YouTube where one could find and watch videos on this subject.
There are a few places where one can seek advice on network and data security. This includes contacting data security experts as well as asking on forums dedicated to the topic.
There are a number of places one can study up on network security. One review recent articles and news postings about it. One can also check out websites such as eTelemetry, Infonetics and brightsolid.
There does not appear to be a company or website titled "Network Security Appliance" and it is therefore not possible to find a contact address. There are however, appliances which are used within network security and information on these is available from several sites such as Wikipedia.
One can get an Eset Smart Security on their computer by installing the program. The software can be found at a computer store or purchased at the Eset website.
The only way you can do this is by installing them one by one. This is generally the easy way unless you can connect them all to a network and remote install them all, which is kind-of impossible when you're installing them. So, yeah, easy way = installing them one by one. :)