The most common attack against Service Provider IP Networks is Denial of Service. Usually these attacks take the form of “Many-to-One Attacks” where multiple attacking sources send flooding traffic towards a single destination. These attacks are sometimes called Distributed Denial of Service. Usually the attacking hosts are “zombie” computers which are compromised by hackers and […]
Archives for June 2010
IEEE 802.3ba Standard -100 Gbps Ethernet is Here
On June 17th, the IEEE has ratified the 802.3ba standard for Ethernet connections with speeds of 40 and 100 Gbps. Both Cisco and Juniper have been supplying high performance network equipment which support the above standard. Cisco for example supports the 100Gbps Ethernet card on its CRS-3 router, while Juniper supports its 100Gbps PIC card […]
A brief overview of CCNA Certification
Do you want to learn how to install, configure and maintain computer networks? Are you looking to develop your professional skills in networking and to demonstrate your expertise or enhance your credibility? Then a Cisco Certified Network Associate (CCNA) certification is an excellent choice for you as an entry level professional. The knowledge that you […]
Cisco ASA Firewall in Transparent Layer2 Mode
Traditionally, a network firewall is a routed hop that acts as a default gateway for hosts that connect to one of its screened subnets. A transparent firewall (or Layer 2 firewall), on the other hand, acts like a “stealth firewall” and is not seen as a Layer 3 hop to connected devices. The appliance connects […]
Cisco Vs Juniper
I have found the following article at pcworld.com and thought about sharing with you. Its a good overall comparison between Cisco and Juniper, the two biggest players in the networking arena. It’s been an ongoing debate for much of the last 14 years – Cisco or Juniper? Increasingly, that argument will hinge on which router […]
Configuring IPS Protection and IP Spoofing on Cisco ASA 5500 Firewalls
The Cisco ASA firewall appliance provides great security protection out-of-the box with its default configuration. However, to increase the security protection even further, there are several configuration enhancements that can be used to implement additional security features. Two of these features are IP Spoofing protection and basic Intrusion Prevention (IPS) support. IP Spoofing Protection IP […]