IOS firewall
« Previous EntriesCisco.LAN.Switching free download
Tuesday, April 21st, 2009Introduction
Driven by a myriad of factors, LAN switching technology has literally taken the world by storm. The Internet, Web technology, new applications, and the convergence of voice, video, and data have all placed unprecedented levels of traffic on campus networks. In response, network engineers have had to look past traditional network solutions and rapidly embrace [...]
802.1X Port-Based Authentication free download
Friday, April 10th, 2009CONTENTS
1 Overview……………………………………………………………………………………… 1 1.1 What Is 802.1X and Why Should I Care? 2 1.2 The History and Technical Documents 9 1.3 How Does It Work? 19 2 Technical Discussion ………………………………………………………………….. 39 2.1 EAPOL, EAP, and EAP-Methods 40 2.2 Radius 66 2.3 Management 77 2.4 Security Concerns 86 2.5 Configuring 802.1X 92 2.6 Wireless 110 3 [...]
Deep Diving Router Architecture, Part I
Tuesday, April 7th, 2009When I was young (how old do you think I am now?) I used to look at a router as a “black box” or just a node. I mean, I was not interested to go to the internal packet switching process inside the router itself and I was focusing more on the protocols and features [...]
Deep Diving Router Architecture, Part II
Tuesday, April 7th, 2009So in the first part I have explained the basic of internal packet switching process inside a router. Normally we look at a router just as a node with multiple interfaces, and our focus is on how the router communicate to the others to build the routing table. Once the table has been built we [...]
Deep Diving Router Architecture, Part III
Tuesday, April 7th, 2009In the previous two parts we have discussed a lot about the hardware architecture. So where do we go from here? Let’s now discuss the features and the applications running on top of the hardware architecture that we have been discussing so far. I’m running out of the pictures that are available and can be [...]
VACL, VLAN Maps & MAC ACL
Wednesday, April 1st, 2009A while back, more specific in July/14 we talked briefly about VACLs. That was when I took the IPExpert Volume 1 - Section 2: Quad Catalyst (PVST+) Switch Configuration. It´s not a very difficult task to be achieved, but TRICKY!
A friend from India (yeah Vipul, it´s you buddy!) asked me some things about it. So [...]
Private VLANS
Wednesday, April 1st, 2009Until now, I thought PVLANs were a bit difficult to understand and to implement, like when studying to CCNP that took me a while to digest, and I had some doubts about it, till today! Man… how simple it is, and there´s no much “magic” in that (like our friend Scott Morris usually says)! [...]
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