1,367 reputation
179
bio website redhardsupra.blogspot.com
location Laurel, MD
age 37
visits member for 5 years, 2 months
seen 14 hours ago

Mar
12
answered What's the difference between socat and netcat?
Mar
9
comment wa (Waiting for I/O) from top command is big
THIS document is fantastic in explaining spotting bottlenecks using the tools mentioned above. Officially it's about NIC tuning, but the techniques and tools presented really have a much broader application than just that.
Mar
4
comment Secure LAMP server for production use
Apache Hardening on a sister site.
Mar
4
comment What are the mandatory Linux kernel modules to run inside of ESXi
@Zoredache got it exactly right. I want a cruft-free, lean mean syscall machine ;)
Mar
4
asked What are the mandatory Linux kernel modules to run inside of ESXi
Mar
4
answered How to Minimize Linux Server Reboots
Mar
2
answered Best practice, or generally best way to set up web-hosting server, permissions, etc
Feb
28
comment Can ESXi pass video card to VM to do CUDA?
I configured the video cards to do passthrough, however I still do not see them inside of the VM, or cannot add them to the VM in VM guest settings as a video card or as a PCI device (they're grayed out). Are there any other tricks I should be aware of?
Feb
28
comment HTTP response time profiling
Upvote for statistics inside of awk ;)
Feb
25
comment Can ESXi pass video card to VM to do CUDA?
BIOS is updated, all the VT-x/VT-d are enabled. How do you pass-through a video card in ESXi? I thought that's what vmware-tools do.
Feb
25
awarded  Student
Feb
25
asked Can ESXi pass video card to VM to do CUDA?
Feb
23
comment *nix OS that is easy to update to latest software
There's servers and then there's servers. Are you running a hospital on it, or your own web/mail? I have a file server on arch with 230+ days of uptime on a 7yr old computer, so it's obviously stable, as long as hardware underneath it is healthy.
Feb
23
answered *nix OS that is easy to update to latest software
Feb
20
comment Can enabling a RAID controller's writeback cache harm overall performance?
Would you mind putting together your data in some sort of structured table? This is some very interesting observations you're making, I'd like to see if there's a pattern.
Feb
14
comment Can't dd /dev/kmem in Ubuntu Jaunty
For completeness' sake, the same thing is done on RHEL 5.5
Feb
10
revised What are some topics you'd like to see covered in an 'Introduction to Network Security' book?
MD4 not RC4
Feb
8
comment Why would I need a firewall if my server is well configured?
I first upvoted for PoLP, then downvoted for laziness. Firewalls are not tools to allow their owners to be sloppy. You should bother tightening your attack surface because if the attacker goes through the firewall (afterall you gotta have something open), they can just turn off iptables. Apply your laziness where it belongs: make the system as slop-free as possible, so you don't have to fix it for a long time.
Jan
22
comment What is “Cloud Computing”?
'The Cloud' is such a joke that I'm not sure it is possible to talk about it seriously.
Jan
18
comment How to find .conf files used by apache
The real problems are Includes as they can be nested, and thus requiring a (potentially infinite) recursive scan to detect the full set of configs that get read in. It's fairly easily scriptable as long as your Includes structure does not create loops: grep through the main httpd.conf, find paths to Includes, grep through that newfound include, keep until grep returns zero results or you're visiting a file that you've visited before.