Comment Do kids still get the word in school? (Score 4, Informative) 220
Comment Greed (Score 4, Insightful) 184
Comment Basically any tech term is coopted by the public (Score 1) 156
Comment Re: Always suspected this. (Score 1) 133
Comment UTC for all (Score 1) 322
Comment Watch Pandora's Promise (Score 5, Insightful) 389
Comment I interviewed at AWS (Score 1) 173
Comment This just means... (Score 1) 70
Comment Re:Avoid the wall-mount, and here's how I did it. (Score 3, Interesting) 402
In the basement I hung a piece of 2'x4' x 3/4" plywood on the wall with some cement screws and then got a surface mount CAT6 12 port punch block. A 8 way coax splitter with terminator caps. A signal amplifier and a small unmanaged gigabit switch. I haven't actually terminated the phone lines as I don't have "land line" phones anyway. I just ran the CAT3 since I was already in the walls. To hold up a "server" (purpose built PC) I bought (from a big box home improvement store) a set of "heavy duty" adjustable shelf brackets and 2x9" deep shelf.
My motivation for going all "PC" grade stuff was that I did not want the power consumption of enterprise/datacenter class equipment. My "server" has a 300W PSU in it which is enough to drive the CPU, Mobo, drives and a few other accessories but it should be operating at about 80% capacity which is where most PSUs run most efficient. As for the switch I just bought a little 8port d-link gigabit switch which uses a 5v 1.0A wall wart. My next endevor is to plug each device in to a Kill-A-Watt to how much power each actually uses.
"Server" specs:
Mobo: Gigabyte GA-Z68X-UD3H-B3
CPU: i5-2500k (No OC)
RAM: 16G DDR3
HDD: 4x (1x Samsung 7200.12, 3x Samsung 7200.11) (Had to RMA one of my 7200.11s and got a 7200.12 as replacement.)
Links (for references, not endorsements)
Cat6 12 port punch block: http://www.amazon.com/Tripp-Lite-N250-012-Mount-Feedthrough/dp/B000HZES42
8 Way Splitter: http://www.amazon.com/Philips-PH61046-8-WAY-Cable-Splitter/dp/B0009A3IXW
Terminator Caps http://www.computercablestore.com/Coaxial_Termination_Cap_catID3984.aspx
My 2c.
-Alan
Comment Re:partimage? (Score 1) 133
Comment Rules and Rapid Net (Score 1) 374
Between racks
1. Raised floor for air only, high ceilings for air buffer and room for overhead wiring, hot and cold aisle partitioning including doors at the end of aisles
2. Power in conduit immediately above racks
3. Cable ladders above power for Cat6, cable bundles are zip tied to ladders every second or third cross rung
4. Fiber trays above cable trays for fiber
5. Run cables from the rack to a row of 2 post rack w/ patch panels in a network cage
6. Run cables from devices in another parallel row(high density line cards etc) to more 2 post racks in the first row via ladders running parallel and perpendicular to rows
7. Use horizontal runs between rack and device patch panels to patch racks to infrastructure
8. Dedicated 2 post racks for telco DMARC gear in another row again, perpendicular cable ladders between rows
9. Clearly label everything using wire wrap labeler
In the racks
1. Use appropriate lengths for everything, fiber, patch and power
2. Label everything using wire wrap labeler
3. Use velcro straps as in rack cabling can change more frequently
In specific we use RapidNet, you order pre terminated modules that you clip into 19" panels, they come terminated, tested and strapped in bundles of 6. Once your cable ladders and trays are up you know how long your runs are.
http://www.hellermanntyton.us/rapidnet
Some good pictures in: http://www.hellermanntyton.us/media/documents/LITPDDCS.pdf
Check out page 9 for some similar to what I described above w/ different racks/cross connects.
Comment Re:It's a scanner people can use (Score 3, Insightful) 835
The truth is even many fax machines have different photo/text settings, contrast settings, quality settings but no one other than us IT types ever considers those.
Comment Possible Solution (Score 1) 97
My company uses OpenLDAP for user authentication in the datacenter and ran across a strange problem that seems very similar to this. It was present in at least OpenLDAP 2.4.16. We tracked it down to a weird problem in the password policy overlay. If I recall right it was the password policy overlay was returning a successful response to updating the last failed login time attribute but that was being passed up and causing binds to return true also. Our solution was to remove the password policy overlay and we have not gone back to revisit it.
I do not know if OpenLDAP in Lion uses the password policy overlay but if it does it would be an easy test to disable it and see if the problem persists. I post here because I don't really feel like registering to a Mac related forum that I will only post once on. I hope someone finds this and finds it useful.
Comment Multiple Layers (Score 1) 497
- or -
2. Use a VPN and hardware firewall
- or -
3. Use iptables 'recent' or 'limit' modules
- or -
4. SSH keys
- or -
5. Find a managed service provider to do 1-4 so you can worry about managing the sites (check out Secure-24.com maybe)