Thursday, June 2, 2011

Wireshark QuickTip: Capturing SSL on a Non-Standard Port (ie. not port 443)

Wireshark aficionados will likely scoff at me for my newb-ness in being tripped up by this but I thought I'd post it anyway in case it was relevant/useful to others - ridicule be damned!

Monday, May 30, 2011

Windows Wireless Clients and the X6148V-GE-TX Ethernet Switching Module

NOTE:  This post is actually a write-up by a friend and ex-colleague of mine, Ben Johns (yes, that's his name, not a typo of my own!)  The saga was quite interesting and the time frame...well, you can make up your own mind about that.

Ben's details appear at the bottom of the post if you'd like to contact him directly.


Tuesday, April 19, 2011

Cisco eBooks, Done Dirt Cheap

Ok, so the AC/DC hack doesn't quite work but it gets the desired message across.

I was scanning through my Twitter feed the other day and came upon a "Follow" that I'd forgotten about:  @CiscoeBookDeal.  It boils down to this:  If you are on a Cisco certification track, or you value network technology texts written by certified (and battle-tested) experts for the VERY reasonable price of $USD10 then you should become familiar with this service in whatever way suits you best.

Monday, April 18, 2011

How to Calculate TCP throughput for long distance WAN links

How to Calculate TCP throughput for long distance WAN links

[Link tweeted by @kiwibrew]

The linked post is a few years old (2008) but interesting, especially if you're getting started in networking and having discussions with your peers about the speed at which a file of a given size might expect to be transferred across a network (WAN specifically), given a couple of known throughput parameters.

Make what you will of the WAAS "subtle" marketing - he is a Cisco employee, in all fairness. That being said, it's still interesting and educational to get a peek into how some of the functionality used in WAN Acceleration works.

Friday, April 15, 2011

Well known TCP and UDP ports used by Apple software products

Well known TCP and UDP ports used by Apple software products (Apple KnowledgeBase) [Link via @x0prahWinfr3yx]

Excellent, though not necessarily comprehensive list of network ports used by Apple services. Apple states on this page that the list is periodically updated but is not intended to be representative of all network ports used by all Apple services/applications.

Still, it's a great place to start if you're looking for network security information regarding Apple products. Follow that up with some judicious use of Wireshark and you're in business.

And, just for good measure since we're talking about securing Apple (Mac OS X 10.5 and 10.6) devices, this is a good companion article:  About the Application Firewall

Wednesday, April 13, 2011

Cisco IOS Interior Routing Protocol Poster

Posters - Packet Life

An excellent resource very kindly offered for free (PDF) by the author. While you're there check out the articles. It's very much worth your time.

An Employability Quandary

My Scenario:
I recently moved from the Sunshine Coast (Queensland, Australia) to Melbourne, also in Australia, but a capital city rather than a regional location.  The reasons for the move are various, including proximity to a thriving Arts culture and a more cosmopolitan milieu.  As a bonus, I took for granted that it would also offer much more to me from a career perspective, though this wasn't one of the primary motivating forces behind the relocation.  And there I find the quandary...