Monday, January 25, 2010

Networking Articles and Tips

Networking Articles and Tips


Difference between baseband and broadband

Posted: 25 Jan 2010 01:14 AM PST

Baseband - In this technology only one carrior frequency is used ( like ethernet). Broadband -In this technology several independent channels are multiplexed into one cable ( like in T1 line)


Saturday, January 16, 2010

Networking Articles and Tips

Networking Articles and Tips


Cisco IOS Upgradation

Posted: 16 Jan 2010 02:31 AM PST

Cisco IOS Upgradation I have long been engaged in computer network management, in the CISCO router’s long-term daily maintenance and management practices has accumulated some experience.  Are now summarized a CISCO router IOS image upgrade several methods for a vast network of enthusiasts, or colleagues for reference. In introducing the methodology of CISCO Router IOS upgrade, [...]


Cisco Router Boot Process

Posted: 16 Jan 2010 12:44 AM PST

Cisco Router Boot Process  Cisco IOS software is stored in a different location, most of the cisco routers boot system commands stored in nonvolatile memory (NVRAM), network administrator can change the value of register to change the location of the router load the IOS image Cisco Routing Device is activated within the definition of register queues several options:- 1) If [...]


Friday, January 15, 2010

Networking Articles and Tips

Networking Articles and Tips


Understanding ASA

Posted: 15 Jan 2010 10:34 AM PST

Understanding ASA5520 Cisco ASA5520 series in a single platform to provide a variety of market, a powerful combination of proven technology, which from an operational point of view and economic point of view, can be deployed to more locations and comprehensive security services. It is a multi-functional security appliance, so as to achieve both a strong [...]


UDP Broadcast

Posted: 15 Jan 2010 08:57 AM PST

UDP Broadcast A Broadcast is a Data packet that is destined for multiple hosts. Broadcasts can occur at the Data link Layer and the Network Layer. Data-link broadcasts are sent to all hosts attached to aparticular physical network. Network layer broadcasts are sent to all hosts attached to a particular logical network. The Transmission Control Protocol/Internet [...]


Thursday, January 14, 2010

Networking Articles and Tips

Networking Articles and Tips


What is Load Balancing ?

Posted: 14 Jan 2010 10:31 AM PST

What is Load Balancing ? Internet-scale will be doubled every 100 days, customers want to get 7 days 24 hours non-stop availability and faster system response time, rather than a site repeatedly to see “Server Too Busy” and frequent system failure. The core of the network in various parts, with the increased traffic, access traffic and rapid [...]


Wednesday, January 13, 2010

Networking Articles and Tips

Networking Articles and Tips


Site-to-Site IPSEC

Posted: 13 Jan 2010 10:31 AM PST

Site-to-Site IPSEC Below configuration is to configure Site-to-Site IPSEC over the PIX as shown in the diagram. Configuration for the Router-4 ====================== hostname r4 crypto isakmp policy 10 hash md5 authentication pre-share group 2 crypto isakmp key cisco address 45.1.1.5 ! ! crypto ipsec transform-set test esp-aes esp-md5-hmac ! ! crypto map test 10 ipsec-isakmp set peer 45.1.1.5 set transform-set test match address 100 interface Loopback0 ip address 10.1.1.1 255.255.255.0 ! interface Ethernet0/0 ip address 47.1.1.4 255.255.255.0 half-duplex crypto [...]


What is Spyware ?

Posted: 13 Jan 2010 07:18 AM PST

What is Spyware ? A spyware is a malware that monitors the activities on the computer which are illegally installed in computer without the user’s knowledge. The information is sent back to its creator. Examples , Collection or passwords and credit card numbers. Some spyware programs are designed to monitor the user’s surfing habits, like what websites [...]


10 tips to protect the security of an organisation

Posted: 13 Jan 2010 05:12 AM PST

10 tips to protect the security of an organisation Even in the economic development of the best of times, computers also need to update the rotation, and we also need to decide how to deal with them reasonably. In the era of economic crisis, people have laid off, running high-cost software system had to be eliminated, [...]