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iPad…Nuff said

April 3rd, 2010 1 comment

Yup…did it. In fact I’m typing this on the new iPad specific wordpress app and I love it!!! The keyboard in landscape mode is very nice and I can type very quickly. I think it might drive some bad habits with all of the autocorrection and not capitalizing first letters but I can get over that.

My first impression after unboxing was “this is a big iPhone”. After putting on some iPad specific apps, that made all the difference. The bigger format really is something special.

Now, anyone know if it would be possible to write a driver to allow a Bluetooth connection to the iogear bluetooth serial adapter? This would be great for data center work!!!

Breadboard Arduino with FTDI cable and no reset button

March 15th, 2010 1 comment

So, here’ my coming out for the other project I’ve been working on lately. Learning about Arduino’s. More later about why I’m doing this but for now…

I got a regular Duemilanove from Adafruit a couple of weeks ago. These things are so nice that they include all of the basic necessary components like the USB to RS232, the automatic voltage input switching, pin headers etc. I’ve been fiddling with that and learning some of how it works. I wanted to get a second for the purposes of having the two Arduino’s talk to each other. Naturally I decided to do this the harder way and assemble one on a breadboard.

This is actually pretty simple. The components you need are the Arduino flashed Atmega328p, a voltage regulator for getting your power source to a steady 5v, a clock source and a programming method. A couple of LED’s are good for power and the pin13 status. Based on several resources around the web including:

http://www.flickr.com/photos/34908673@N00/4042185019/sizes/l/
http://arduinofun.com/blog/2009/10/15/breadboard-arduino/

I’ve managed to get my Boarduino up and running without the use of a reset button and hopefully with a few extra rows available on my breadboard. I’m using an FTDI cable from Adafruit since I had to pick one up for the XBee modules I got. Yes, more to come on that as well. The FTDI cable includes the chip for USB to RS232 conversion but it does not pull out the DTS pin. Thankfully Arduino supports auto-reset using the RTS pin. I had to struggle a bit to figure out why it wasnt’ working but the fix was pretty simple. You need to enable “Set RTS on Close” on the serial port that’s tied to the cable. Check out the LadyAda article for more details:

http://www.ladyada.net/make/boarduino/use.html

From Arduino projects
From Arduino projects
From Arduino projects
Categories: Cruft, Home and Hobbies Tags:

Checkpoint doesn’t support Proxy-Arp???

February 3rd, 2010 1 comment

Say whaaaatttt???????? Ok, so you have a Checkpoint firewall with a whole lotta NATed addresses. The router won’t find these NATed addresses though unless you go through a painful procedure to enable proxy-arp on the Checkpoint or you have to add static host entries to the router pointing to the interface IP on the Checkpoint.

What year is this because I seem be in the 90′s.

I know some people really love Checkpoint but every exposure I’ve had has left me scratching my head wondering if they could have done things any more atypically.

So yes, Checkpoint administrators, have no fear. The router jockeys will fix your broken crap again.

Categories: Cruft, Networking, Security Tags:

HP TC1100 and the iPad

January 30th, 2010 No comments

I’ve had a TC1100 for a while now. I just decided to get a new battery since the old one wouldn’t hold any charge. So as I sit here using it with Win7 it occurs to we that this is pretty much the exact same size as the iPad. Sure its a little thicker but the screen is the same. Even down to the bezel. So whats different? For one thing this requires a pen. This is a good thing and bad. The handwriting recognition isn’t too bad but I do have to fix things sometimes. Plus everything requires the pen. Sometimes it would be nice to just flick something with my finger. So, despite being a really cool form factor I can see how the iPad would be alot easier to use.The lack of camera really annoys me but maybe I can live without that after all. maybe…

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Fixing a weird Cisco syntax error

January 24th, 2010 No comments

Ran across this tonight. Someone had entered a prefix-list with the name “at&amp ;t” instead of “at&t” (wordpress didn’t like it either so I added the space between the p and the ; but they should really be together.

Oddly enough, IOS wouldn’t allow the bad line to simply be deleted. The “;” had to be removed so that the no command included “at&ampt”

Probably some sort of a regex problem or an ascii escape character but it’s still kind of strange.

Cisco IPS doesn’t like ICMP redirects

January 5th, 2010 No comments

I’ve been trying to figure out why a pair of Cisco IPS (AIP-SSM in this case) wouldn’t auto-update signature files or connect to the new Global Correlation feature. The management interfaces were located on a subnet that was between the firewall and the internal L3 switch. The internal LAN’s are on the other side of the switch.

I’ve known for a long time that Cisco ASA’s don’t support sending ICMP redirects. Because of this the IPS’s default gateway couldn’t be set to the FW interface. If I did that they would never be redirected to reach the internal networks. I’ve never had a problem with IOS doing ICMP redirects though, so the IPS’s have been using the switch VLAN interface as the default gateway. The switch sends ICMP redirects when the IPS needs to get out to the internet and the traffic goes direct to the firewall.

Except it doesn’t. I could swear it did at one time in the past. Either my memory is faulty or an image update on the IPS broke it. Now, it seems the IPS tosses ICMP redirects. My guess is it worries about man in the middle attacks and and ICMP redirect is a possible sign of that. So even though the switch is doing the correct thing the IPS disregards it.

Moved the IPS management interface to one of the internal LAN’s and all is happy now.

Microsoft X5 mouse and Snow Leopard

December 19th, 2009 No comments

Seems they don’t play well together. Sure, basic mouse functions work, including the scroll wheel. All of the extra buttons don’t seem to work at all though. I’ve been keeping an eye out for drivers and nothing yet. Also, I have yet to find anyone else crying about this. It seems strange to me that I’d be the only one with a nice Microsoft gaming mouse on OS X.

Categories: Cruft, Home and Hobbies Tags:

Sometimes Cisco makes me laugh

December 4th, 2009 No comments

Stout!

October 30th, 2009 No comments

As a fan of flavorful beer I often find myself facing stares of revulsion when I’m enjoying a nice glass of Guinness. What few people realize is that “dark” isn’t supposed to mean harsh, bitter or high in alcohol content. Found this great article:

http://www.nytimes.com/2009/10/28/dining/reviews/28wine.html

All you doubters should read it! You know who you are!

Categories: Cruft, Home and Hobbies Tags:

Cisco ISR G2′s on the way

October 14th, 2009 3 comments

I’ve gotten a look at a powerpoint with the technical details now. Nothing too earth shattering. More of a natural progression of capabilities and performance.

I’m such a geek. The one cool new feature is that they have finally put in a USB console port. Actually mini USB. I’m not sure of the wisdom of using that over the already present regular USB ports, but that’s ok. I can’t find anything about how that’s going to work. I expect you’ll have to install a driver for USB to COM on windows just like you do with the USB to Serial dongles but this should be Cisco provided.

How cool would it be if there’s a hidden driver for that in Windows 7 already.

Now all we need is a wireless USB KVM and you could manage a whole data center of routers without running more cables. Better have some good security on that!

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