securing a computer case

[_Forest_Berry_]

So I am preparing for an ctf and everything is secured except the fact that there are only some thumbscrews between an possible attacker and my components So is there any lock you could replace an thumbscrew with ?? Or should I modify my case was wondering on maybe drilling trough the case in it self and fitting an padlock but it sure won't lock pretty so any ideas ??

[Wiseman501]

Welcome to the forum! Try these out.

http://www.tryten.com/keyed-case-lock-p ... MgodOSgAxg

http://www.tryten.com/computer-chassis-lock-3-pack.html

That site has a lot of neat computer security devices.

I suggest using both as a team to deter anybody with sticky fingers. If those aren't quite what you're looking for, or if your computer case isn't a type that is able to accept those locking devices, let me know what kind of case you're working with and I'll do my best to point you the right way!

[_Forest_Berry_]

It's an corsair air 540. Going to build it soon so trying to get al them parts together before that painting it purple/black/white going to look nice. But the looks are going to stand a little out especially the 2 one the first one wasn't that bad but it's going to stand out like an win XP bocks in an photo studio. So could anyone think of something custom thinking to do something like the first one that doesn't stick out as much and considering the price there will be adept lock pickers there for sure I got an idea it would be tricky but I think It can work. Here is an improvised example -| the | is the case the - is an silicon extension that would keep the door in place |==[ ] === [ ] ==| this is the silicon extension that will occupy display port so in the squares we got one lock each that will have an latch that will go against another display port which will contain to l shaped brackets that where the latch will enter like this L|. That's what I think I will make on the windowed side and on the other use your solution. If anyone of you got some tips or other designed please tell (sorry if the text didn't make much sense I got add and dyslexia so yeah )

[Squelchtone]

It's an corsair air 540. Going to build it soon so trying to get al them parts together before that painting it purple/black/white going to look nice. But the looks are going to stand a little out especially the 2 one the first one wasn't that bad but it's going to stand out like an win XP bocks in an photo studio. So could anyone think of something custom thinking to do something like the first one that doesn't stick out as much and considering the price there will be adept lock pickers there for sure I got an idea it would be tricky but I think It can work. Here is an improvised example -| the | is the case the - is an silicon extension that would keep the door in place |==[ ] === [ ] ==| this is the silicon extension that will occupy display port so in the squares we got one lock each that will have an latch that will go against another display port which will contain to l shaped brackets that where the latch will enter like this L|. That's what I think I will make on the windowed side and on the other use your solution. If anyone of you got some tips or other designed please tell (sorry if the text didn't make much sense I got add and dyslexia so yeah )

show us pics of your actual case, that's probably the easiest way to brainstorm what kind of cam lock or padlock would work well.

upload to Imgur and link here.
Squelchtone

ps.. since when does capture the flag include physical attacks? I thought it was always rooting a box remotely or over the network. What have other people in the past done to secure their cases or were physical attacks not allowed at previous events?

[_Forest_Berry_]

It's going to be hard to track down the people that have previously been on this ctf as last year we went completely oblivious of what was going to happen and the challenges we were going to face in fact we ended up sleeping on top of the cases (an really uncomfortable experience) and the other team actually used the second solution that Wiseman posted (btw I don't have the parts yet) so I can't take any pictures and I am limited to my phone

[_Forest_Berry_]

here is a picture i took from an consept drawing i made in class ...

[Squelchtone]

ok chief, I'm out of this thread. . good luck.. I asked for pics of your case so we can see the back of it and how to secure it best, not for doodles from class..

I personally think you're worrying for nothing and a traditional ctf doesn't involve other teams touching your box, like I said physical attacks or exploits are usually not allowed.

good luck with this,
Squelchtone

[_Forest_Berry_]

Sorry about the drawing but as i don't have the case yet i can't get any other photo than you can get by doing an standard search query on google for crosair air 540 (carabide )

[Squelchtone]

Sorry about the drawing but as i don't have the case yet i can't get any other photo than you can get by doing an standard search query on google for crosair air 540 (carabide )

ahhh didnt know you didnt have the case yet.

[_Forest_Berry_]

It's going to be hard to track down the people that have previously been on this ctf as last year we went completely oblivious of what was going to happen and the challenges we were going to face in fact we ended up sleeping on top of the cases (an really uncomfortable experience) and the other team actually used the second solution that Wiseman posted (btw I don't have the parts yet) so I can't take any pictures and I am limited to my phone

Next time i wil state it a little more clearly. And use paint or something like that by the way this isn't an standard ctf if not I wouldn't have even bothered asking

[_Forest_Berry_]

And if you are interested in the ctf it is an by invite only ctf that's going down in April in Vikinskipet in hamar paralel to the gathering (Lan event).

[Tighran]

I'm not sure I understand the context or what goes on during this sort of ctf, but regardless...
I actually just completed a build using a Carbide Air 240, which is a scaled down version of the 540, and can take pictures of that if it might be helpful. There are some different exterior bays and such, but I would guess most of the hardware and spacing from the edges would be the same, and can bust out the micrometer if needed. That being said I'm sure most of this info is probably fairly easily available online.

[Squelchtone]

Why not put the tower in a large Pelican case which has padlock eyelets on it, get a couple Abloy PL321 high security padlocks that will resist picking very well (shackles can still be cut, but god, I hope you're not doing that sort of stuff at a cft. Drill a bunch of holes in the case and put some 12 volt fans in to blow air through, and make some holes for power and network cables. This denies access to USB ports as well.

Squelchtone

[globallockytoo]

You could use a coin machine (washing machine) lock. It is an Ace lock with a rod attached to the back that screws into a nut you can attach inside your existing case.

I'm not sure if you know what a KABA Unican Simplex 1000 lock looks like. But the inside of the lock usually has a key cylinder at the top, that when the key is inserted allows the cylinder to spin 360º, effectively tightening against the nut inside. This is to prevent anyone just coming along and recoding the Simplex. same theory here.

Here is an image of the simplex...where you can see the keyhole.

https://www.google.com/search?q=kaba+si ... B500%3B400

[_Forest_Berry_]

I am not going to order another case to have around my case and there is an high posibility for them to actually just take the case and wander away (i did it last year with an friend of mine to surprise him with an nicer case ) usb ports no worry i normally check all of my ports and use port covers for the ports i don't use i think im going to lock in to globallockytoos solution its an realy crazy ctf thanks for the support Btw i just ordered an slimline kit from shutord so going to start picking locks soon ( I hope) so old chewing gum machine lock would be the same lock that they got on them telecom boxes ??