Posts filed under Annoying

Cisco ISE: Change of Authorization (CoA) not working

We had a wireless security implementation at a customer site which consisted of the following components:

The setup included a wireless lan for guest access by using the Cisco ISE guest portal functionality.

We started by configuring the WLC's and ISE environment and having done that everything worked as a charm. A couple of days later we we were not able to connect to the wireless network.
The error reported in the ISE Authentications overview was:

Dynamic Authorization Failed : 11213 No responds received from Network Access Device

Posted on April 2, 2013 and filed under Annoying, Security, Tips'n Tricks.

iPhone Stuck At Infinite Loop After iOS Update

AppleInfiniteLoopSymbol.png

The old iPhone 3G got stuck in an infinite restore loop after upgrading to iOS 6.1.2 this evening. As you might understand, the misses was not amused....

The infinite restore loop means that it keeps saying that it needs to be restored from within iTunes, but after doing that several times, you tend to loose faith. After trying it several times on a Windows laptop I tried it on my iMac. While it was restoring for the who knows how many times, I did some research on the Interwebs. The results were not encouraging.

I started gathering information, and some tools (like Tiny Umbrella) to break it from its infinite loop. After the restore the iPhone booted just fine. No idea what made it break its loop. Could be coincidence, could be my iMac. No idea.​

Anyway, the misses is busy restoring the data. She (or iTunes) made a backup just before the backup. So all should be back to normal in a few minutes.​

Posted on February 21, 2013 and filed under Apple, Annoying, Hardware, iPhone.

Cleaning Up Apple TimeMachine Might Take A While

When I bought my Apple iMac about 2.5 years ago, I also added a 500GB external drive for backup reasons. This backup drive is a 2.5" USB-powered Western Digital drive. Small, unobtrusive, and stuck to the back of my iMac.

Now, >2 years later, the TimeMachine process started to complain that I ran out of disk space for (the TimeMachine) backup purposes (4.85MB free of 500GB). I used to think that TimeMachine would warn once, and after that it just started to overwrite old backups, but no matter how many times I clicked OK -> Continue etc. the out of space error kept coming back. Highly annoying. During this period I have no idea if it's actually doing anything in regards to backing up my data. I needed to resolve this, so I had two options;

  1. Get a new / bigger external harddrive (on Christmas eve......)
  2. Or delete the old backups from about a year back to the beginnning.

Since getting a new drive was out of the question I decided to delete some really old stuff on the backup drive. My reasoning being that if I didn't need the extremely old (modified) data back then, there's little chance I need it now or any time soon.

Selecting the data and deleting it was easy, this only 'moved' the data to the Trash. In other words, it's still sitting on that drive. I have the empty the trash to free the actual space on the external drive.

EmptyTrash.PNG

The screenshot was taken while it was still counting the objects that were going to be deleted. Eventually (after 2.5 hours), the counter reached >480,000 items. After this time the actual cleaning of the Trash started. That was over 1 hour ago, and it still needs to eliminate about 350,000 items. This is one of those situations were lightning backup fast drives are welcome. For the other 364 days a year it doesn't really matter.

It's gonna be a long night for the iMac.

Posted on December 24, 2012 and filed under Software, Annoying, Apple.

OS X Wireless Connection Problems Solved (??)

Ever since the upgrade to Apple OS X Mountain Lion (10.8) on my MacBook (v5.1) I encountered wireless problems every now and then. These 'experiences' are documented in two different blog posts here and here.
At the time I was also running an 'old' version of Little Snitch (v2.x). After installing v3.0.1 my problems seemed to have solved... Seemed, until I upgraded Little Snitch to v3.0.2.

After the (mandatory) reboot my wireless connections were gone. The adapter wouldn't go active. The symptoms being the exactly the same as before. So I have no doubt, that Little Snitch had something to do with it.

Posted on December 8, 2012 and filed under Software, Annoying, Apple, Operating Systems, Tips'n Tricks.

Timetravel Made Possible With The Samsung Galaxy S2

And yes. Another rant from an Apple fan-boy (I guess).

As you can read here, I have a Samsung Galaxy S2 at home, and the device is still in the original box. I did open the box, just to check the device, and as you may have read; the device went straight back into the box. Since then, it has been out of the box about four times, and not more than an hour. The main reason (for getting it out of the box) is that there a software updates that should fix problems with the device. I guess not the problems I have with the device..... I want to give the device a chance. I really do, but they don't come close to the Apple iOS experience. The Android eco-system has still light years to go.

Posted on October 25, 2012 and filed under Annoying, Hardware.

Backup Failure

Creating backups. Something everyone with a computer should do. Not only to preserve the items of (sentimental) value, but also to minimise the time and effort to recreate what went to the eternal data fields.
But even if you create backups, things can go wrong.

Many believe that storing the data on an external device is a backup. Well, it is, but only if you have the original data on another device. Backup means that you store the same thing (at least) in two places. If one of the devices (your computer with internal hard drive, or the external backup device) should fail, you have still one copy of the data, which you can restore or backup (depending which device went up in smoke).

Posted on October 19, 2012 and filed under Annoying, Personal, Software.

MacBook Wireless Borked Again, Still, etc.

A while back I had regular issues with the wireless adapter on my MacBook after I had upgraded to OSX Mountain Lion, but after the removal of Little Snitch (I still ran the beta version) it seemed that times were a changing... Seemed that is.

This morning I was fiddling about with my photo website, and needed to see the results in several different browsers. One of them being Google Chrome.
Trying to launch the Chrome app, it crashed immediately. Reopening didn't help. So I tried to download a newer version, since I hadn't updated mine since the upgrade to Mountain Lion. The result; It still crashed. Even after removing all Chrome (and Google) references on the disk, it still crashed.

So, it became time to consult the book of knowledge, and see what the Internets had to say about my little ordeal.

Posted on October 13, 2012 and filed under Annoying, Apple, Browsers, Hardware, Tips'n Tricks.

Ziggo Internet, Juniper Firewalls and DHCP

At the house I have currently two ISP delivering broadband. Well, broadband isn't the correct word, since the the one of them is only a mere 256kbps (I think). The other is a 'whopping' 20Mbps.
The 20Mb connection is provided by XS4ALL, and the 256kbps is for free (if you have a phone subscription with Ziggo). The 256kbp is the minimum they provide to transport the phone calls, but if you're a masochist you can also browse the internet over that connection.

So, two ISP @ home. Combine that with a Juniper SRX firewall, and a dual ISP setup is born. The theory of that setup is that I connect both ISP's to the firewall, and use the 20Mb line as a default internet connection, but when that one dies, I automatically get switched to the backup line (256kbps).

Posted on August 9, 2012 and filed under Annoying, Hardware, Internet, Security, Tips'n Tricks.

Unable To Turn On Wireless In OS X Mountain Lion

Last night I was minding my own business on the couch, when the wireless connection on my MacBook (UniBody)  decided to call it a day. According to the symptoms (no bars visible in the WiFi icon in the menu bar, no visible wireless networks in the vicinity), the WiFi adapter was turned off. Turning the WiFi back on was not possible though.

Posted on August 3, 2012 and filed under Annoying, Apple, Hardware, Tips'n Tricks.

Junos Pulse, Apple iOS, and Split-Tunneling

When you create (SSL)VPN access for you employees, you might enable split-tunneling to save corporate bandwidth. No split-tunneling means that all traffic is forwarded into the VPN tunnel. So if you browse the internet with an active VPN, the traffic goes through the VPN, and accesses the Internet through the corporate Internet connection. This isn't a big problem with a couple of employees, but with hundreds on the road or working from home, this might frustrate the employees in the building.

Posted on June 15, 2012 and filed under Annoying, Apple, Security, Software, Junos.