Network Security Syllabus. Network security is a branch of computer security that deals with making networks themselves secure against attack. As well as securing the information transferred over the network.
The network security syllabus covers topics like network topology, network layers, and network protocols. Also, network vulnerabilities, network attacks and countermeasures like firewalls, NAT etc.
What are network vulnerabilities?
There are two main types of vulnerabilities in a network: the first is the vulnerability of the network software. And the second is the vulnerability of the users and the third is the vulnerability of the network infrastructure.
What is network infrastructure?
Network infrastructure is a general term for all physical equipment used to connect computers together to form a network. It includes such things as cabling, routers, switches and repeaters for wired networks. And access points and base stations for wireless networks.
What are network attacks?
Network attacks are any attempts made by a hacker to access or damage a network. They often attempt to breach the security of a network, steal information from it or gain control of its resources.
Network attacks can be classified as either internal or external. External attacks are usually from outside the organization’s firewall. While internal attacks are usually by users who have legitimate access to the network. External attacks are more common. Since they can be from anywhere in the world, internal attacks can be dealt with more easily by restricting user access and logging activity.
What is Network Security?
Network security is a branch of computer security that deals with making networks themselves secure against attack, as well as securing the information transferred over the network. The network security syllabus covers topics like network topology, network layers, network protocols, network vulnerabilities, network attacks and countermeasures like firewalls, NAT etc,.
What is Firewall?
A firewall is hardware or software that protects an internal network from unauthorized access. It acts as a gatekeeper between its trusted internal networks and potentially untrusted outside networks, such as the Internet. The firewall can enforce policies requiring users on the trusted side of the firewall to authenticate themselves before allowing them access to the trusted side or it can take action based on observed traffic patterns. Firewalls are often categorized according to their function.
Where do you need a Firewall?
The computer hardware firewall is built into every operating system (OS). It’s commonly known as an “intrusion detection system,” which sounds more impressive than “a big pile of code sitting on your computer watching every move you make.”
The OS actually has two firewalls: one that protects your computer from outside attempts to gain control and another protects your computer from yourself when you use it for surfing the Web. However, these firewalls only protect you from some kinds of intrusions and not others.
They offer no protection against someone walking up to your computer and inserting a malicious disk into your CD-ROM drive (which happens all too frequently). These firewalls also offer no protection against viruses that get onto your machine via e-mail (also all too common). For protection against these threats, you need a “third-party” firewall program running on top of your existing OS firewall.