27-01-2015, 09:22 PM
i need 8th sem network security(ECE) notes
kindly requesting you to mail the pdf formaT NOTES to my mailid
ks.shruthi24[at]gmail.com[/size][/font]
|
8th sem ece network security notes pdf
|
i need 8th sem network security(ECE) notes
kindly requesting you to mail the pdf formaT NOTES to my mailid
ks.shruthi24[at]gmail.com[/size][/font]
14-03-2017, 10:04 AM
Network security is the security provided to a network by unauthorized access and risks. Network administrators are required to take precautionary measures to protect their networks from potential security threats. Computer networks that are involved in regular transactions and communication within government, individuals or businesses require security. The most common and easy way to protect a network resource is to give it a unique name and a corresponding password.
Types of Network Security Devices
Active Devices
These safety devices block excess traffic. Firewalls, antivirus scanning devices, and content filtering devices are examples of such devices.
Passive Devices
These devices identify and report unwanted traffic, for example, intrusion detection devices.
Preventive devices
These devices scan networks and identify potential security issues. For example, penetration testing devices and vulnerability assessment devices.
Unified Threat Management (UTM)
These devices serve as all-in-one security devices. Examples include firewalls, content filtering, web caching, etc.
Firewall
A firewall is a network security system that manages and regulates network traffic based on some protocols. A firewall establishes a barrier between a trusted internal network and the Internet. Firewalls exist both as software that runs on hardware and as hardware devices. Firewalls that are hardware based also provide other functions such as acting as a DHCP server for that network. Most personal computers use software-based firewalls to protect data from Internet threats. Many routers that pass data between networks contain firewall components and, conversely, many firewalls can perform basic routing functions.
Firewalls are commonly used on private networks or intranets to prevent unauthorized access from the Internet. Each message that enters or leaves the intranet passes through the firewall to be examined for security measures. An ideal firewall configuration consists of hardware and software-based devices. A firewall also helps provide remote access to a private network through secure authentication certificates and logins.
|
« Next Oldest | Next Newest »
|
