DHCP Based Security Part 3: Dynamic ARP Inspection

This post closes out a 3 post series on DHCP based security technologies for the Cat3560 (among others) switching platform.  We first took a look at DHCP Snooping, and then we built upon that with IP Source Guard.  Finally, we've come to Dynamic ARP Inspection, or just DAI.

DHCP Based Security Part 2: IP Source Guard

This is post two in a three post series on DHCP based switching security technologies.  Previously I looked at DHCP Snooping, and now I'm going to look at IP Source Guard.

DHCP Based Security Part 1: DHCP Snooping

There's 3 related switching security technologies for which I've had draft posts sitting around for some time now. I'm finally getting around to publishing them as I study away for my second lab attempt. I know it's the silly little technologies like these ones that can show up on a Lab and cause grief, so hopefully I don't forget all this come Jan 13th.

The first one we're going to look at is DHCP Snooping. 

Simple IPv6 Multicast Configuration

IPv6 Multicasting is something that's been confusing me a bit lately.  I think I finally have the basics figured out...  And I'm going to put there here so that you can read all about it.  Because you want to read all about it. Don't you?

I thought so.

Lab Attempt #1

As previously stated I had my first attempt at the CCIE Lab exam on Nov. 7.  I'm sure you've all likely figured out that I did not pass since there hasn't been any fanfare or celebration on my part.  But it was a learning experience and I don't really have any regrets about not being able to pass on the first go. 

During the  boot camp I took the week before Marko Milivojevic told me, and the rest of the class, that we all had a fighting chance of passing.  Well it turns out he was right.  I did have a fighting chance, but that was about it.  For me to have passed on the first go it would have required more luck than skill, and I don't really want this cert if it's because I'm lucky.

So, for those of you interested, here's how my day went.

Living the Dream

At last.  It's time.

Tomorrow I fly out to San Jose. I'm doing a 5 day boot camp next week, and then Monday Nov.7 I'll be attempting the CCIE Lab exam.  The last year and a half is about to culminate in one intensely immersed few days of routing, switching, and general conf t awesomeness.

I'll see you all when I get back.

Jason

Interesting Colubris Hack

I got sent out on a hands and feet job today as a favour to another company who we have a customer in common with. I guess these guys have seen this before... The Colubris routers apparently sometimes incur a power supply failure that you can work around by connecting a regular pc power supply in its place. I thought this was pretty clever so I'm posting a picture.

Lab Date Booked

I've been rather terrible at updating this thing again...  I'm really a rather terrible blogger aren't I?

Don't answer that.

Well one thing I have been doing is putting the plan into motion, and to that end today I booked a Lab exam date.  Nov. 7 I'll be walking into Cisco in San Jose and finally taking this big bad test.

I have a lot of work to do between now and then.  Let the good times roll :)

IINS 640-553 OCG Winner!

Thanks to everyone that sent in a submission for my book giveaway.  It was actually a tough decision but in the end I've awarded the book to Martin, a CCNA from Slovakia who's interested in pursuing the CCNA Security to help him further his career.

It would also seem that Martin has talents out side of networking...  He has mentioned to me that it would be alright if I mention his website, www.floorripper.com so I figure I'll oblige him ;)

Good luck on the CCNA-Sec Martin!  I look forward to hearing about your progress in the coming months.

1000 Page Views!

Sometime last night while I was sleeping the page view count for this month hit the 1000 mark.  While this is a very small number compared to any real site out there it is for this site I think a milestone that I'm going to make a post about.

I'm pretty sure that about half of the 1000 page views so far this month were wirerat trying to solve the Networking-Forum Easter Egg Contest.

If you read this blog regularly then thank you.  If you're just passing by then I hope you come back, but thanks for checking things out.

The previous monthly page view high mark was last month at 853.