Archive for the ‘Blog’ Category.
I really need to sit down and do some research on Linux System Hardening, as I really want to take a look at any kernel hardening that can be done on the system. i.e. I don’t want users to be able to see who else is on the machine via the output of commands like ‘w’ and ‘who’. I remember grsecurity use to be available to do this, so I should look around to see if this is still valid or do we do it another one.
I did find the following web post about SSH hardening which I enjoyed reading here.
If you’ve done Linux System Hardening recently, chime in on the comments with your experience.
Today my step dad and I fixed a problem I discovered post the new pergola slab going in. Days after the area was cleared, I noticed a lot of water near the tap and thought my wife must of over watered the lawn.
Post the slab being done it was more noticeable when pergola installer cut the downpipe. i.e no water came out of the live pipes. Since these should contain water since it goes to a tank. Thought the collar (reducer from 90mm to 100mm pipe) had come off, as it had once before.
We cut out the pipe, and when we put a torch down the water was actually below the point of the collars, which meant the leak was lower.
Dug out the side to access pipe and I immediately spotted the problem. It appears the 45 degree elbow that was under the concrete slab must of been knocked during excavation of the slab area I imagine and this split it on the inside of the elbow. It was so split that it was nearly around the whole pipe diameter. It had else caused some soil to erode around it too. Every time it rained, the system would need to load up, and post rain the system would unload all that water into the rear out this split. No wonder the ground was so wet post rain.
Didn’t take and pictures of the split, as I was too covered in mud to get a camera. However did capture the picture below showing out fix, as you can see not a bad job. Loaded up the down pipes and no leaks. So win for us.
Now I can get on to the next jobs around the house and yard. So much still to do. Will continue to take pictures. Have another low spot where I am going to lay a surface drain and some arg line/pipe to help stop the area from pooling with water (where the trampoline use to be)
I was going to build up another mini-ITX desktop, however the more I look at it I am better off buying one of those Dell Outlet Inspirion laptops. As I end up getting a PC that can be used as a desktop replacement and doesn’t need any more hardware purchased. i.e. keyboard/mouse/monitor. So I am monitoring the outlet site the past week watching what Intel i3 Third generation systems come up and the prices.
The PC laptop will probably run Windows 7 x64 Home (or Windows 8.1 if my work VPN finally ends up supporting it). While my existing mini-ITX desktop (i3/16gb ram) will probably be converted to a Ubuntu desktop, so I can implement lxc containers again and some other workload on it. Really want to get tvheadend setup on it and plug in the USB tuner I was using with my Raspberry Pi. Remember the post here, about that?
If I get some time this weekend one evening going to install a temporary hard disk into my desktop and do a Ubuntu 12.04.4 install and do some messing about to ensure the hardware all detects fine and resolution of monitors works fine. The system uses an Intel HD 4000 onboard, so I hope accelerated video works or that could be a problem.
Looking to purchase the laptop the end of this month or early next month.
Today I finished off the last section of garden edging I have been installing. Below is a picture to mark the event.
Now it’s completed I have a list of other tasks I now must commence in the backyard, so it all starts again on Saturday morning. The rain the past week has highlighted some problem areas which I need to resolve before winter comes around, cause I wouldn’t like to have a wet winter and still have water drainage problems.
I’ve also managed to use the new Makita Cordless Jigsaw and completely love it. It’s just so good having a cordless jigsaw and no need to run leads for quick cuts.
Totally missed it, but a friend alerted me to the fact we have a new voice services provider in play. Telecube seem to be a new provider and seem to be making a name for themselves.
I signed up on the weekend, and the immediate thing I noticed was the very nice portal for configuration of the services and the fact you can configure up to 10 extensions which is very handy.
You can also check out the Whirlpool thread for them here. If you’d like to sign up, click here.
We’ve recently been provided an Obihai Obi202 and ObiLine products.
So far I am very impressed, as I was able to plug in the Obi202 and ObiLine with minimal setup. The ability to do basic configuration via the web portal on Obitalk is good, but if you want some serious tweaking and configuration you can use Obiexpert mode via Obitalk portal or the web interface on the device itself.
If you have no VoIP providers configured soon as you setup the Obi202 or similar products you could do free calls between devices. i.e setup an Obihai device say at your own place and grab another one at a relatives. Once these are both configured via the Obitalk portal on each account, you can do Obitalk free calls between them by dialing the Obitalk number that each unit is assigned.
Reposted from Heimic Technology post here.
I’ve been lucky enough to be sent some Obihai hardware, so you will see a few posts from me about my experiences with setting it up and what not. I’ve been sent an Obi202 and ObiLine which I should start to tinker with from the weekend.
Unfortunately they arrived today, however they are waiting at the local PO, which means I wont be able to collect them until Saturday morning.
So you’ll be seeing some posts from me about the hardware and my experience. Looking forward to it to be honest, as it looks pretty impressive on paper. If anyone is already using it, drop me a comment, as I wouldn’t mind doing some test calls via the Obitalk number that is provided when you setup an account.
Was sad to hear in the news today that Harold Ramis has died. Still not that old either. Will always remember him from Ghostbusters.
As discussed in one of my previous posts here. I own a Noontec N5 Gigalink single drive NAS. It’s not the greatest thing around, but for what it does do well (basic file sharing) it does the job. I don’t use any other features of the unit, just simply the file sharing side of it.
I wish I never upgraded the firmware, as the one that it shipped with had a much more basic UI for administration, however the newer firmwares you find may be TerraMaster branded, which I honestly don’t like. Although TerraMaster make a unit based off the N5, I just like it to remain Noontec branding.
I found that the firmware available at the page here, is a recent Noontec branded one. So I have installed it and will be using it for now. It is version as per below;
NOTE: The direct link above to Noontec site may disappear over time. Should it do so, I have zipped up a copy and made it available from my site below;
NAS-1Bay-N5_J1.05A_Ver2.35_USB2.0.zip (From: static.heimic.net)
Had a client/server who was unable to do any DB2 Archive log backup. Attempts to run it would fail and when I looked into the logs the failure was seen against the key log lines below. I’ve named the log file and component where this log exists.
2100 2944 02/16 11:40:11 111111 Servant [---- SCHEDULED BACKUP REQUEST ----], taskid  Clnt[aaaaa003] AppType[DB2 on Unix] BkpSet[AA1] SubClnt[AA1_Archive_logs] BkpLevel[Full]
13720 26b4 02/16 11:40:16 111111 SrvDb2Agent::AgentAttach() - 1: dataAgentAttach-> HostName=aaaaa003.bbbbb.ccc*aaaaa003*8400*8402 start...
13720 26b4 02/16 11:40:16 111111 ** CVSession::attach(ulPortArg):
- AuthenticateClient failed. Error=9000026.
13720 26b4 02/16 11:40:16 111111 SrvDb2Agent::AgentAttach() - 0: dataAgentAttach() failed: m_cvsOA.getLastError: Err Number=9000026 sLastErr=[CVSession::authenticateClient]:Remote system [aaaaa003.bbbbb.ccc]. Failed authentication returned from server..
13720 26b4 02/16 11:40:16 111111 SrvDb2Agent::RunClient() - 0: AgentAttach() failed.
13720 26b4 02/16 11:40:16 111111 SrvDb2Agent::ExitHere() - 1: JobObjectInitialize(111111) started...
Failed authentication messages could indicate that like the message says, the network password used by the Commserve and Client to communicate is different, thus the communication fails. i.e. Client could have a network password stored on it’s configuration that doesn’t match the one for this client stored in the Commserve database.
Something might be wrong with the communication between the Commserve and the Client (in either direction).
So I would recommend checking out that the communication is fine and that the Commserve is resolving the client correctly and accessing the correct IP address for the client.
If this all checks out fine, and communication from Client to CS is fine (in both directions). You might have to force a network password reset/sync. The easiest way I find to do this is to do a LOCAL uninstall on the problem client (to ensure that the backup history for client is retained in the Commserve) and perform a reinstall on the client using the Simpana DVD3 media. Ensuring to install again using the same details the client is displayed as in the Commserve. During the reinstall the network password is put in sync again.
In the case of the client here, we had to reinstall it. Post the reinstall the client and backup attempts worked fine. This would affect all Simpana iDA’s on the client too, thus impact all backups for the client.