280 reputation
15
bio website
location Atlanta, GA
age 31
visits member for 1 year, 4 months
seen Jul 19 at 12:51

Atlanta area UNIX admin with a focus on LDAP, DNS, PAM, and just about any form of server troubleshooting that does not involve looking at source code.

I currently work as the DNS lead for a nationwide enterprise. Sometimes I miss those halcyon days of not having to know what the ADDITIONAL section of a DNS packet was. I always miss the days of not knowing what a DNS amplification attack is.

In my spare time I play computer games and pretend to be a C programmer. I think it's useful for all UNIX admins to spend enough time working with C to at least understand system calls; it doesn't take an expert, and it avoids contributing to the decline in classically trained sysadmins.

Awesome stuff I use:
tmux
lsof
strace
cgdb
vcXsrv (avoid XMing: its author is a Wikipedia vandalist, and vcXsrv has better clipboard support besides)

Books I recommend:
Advanced Unix Programming, 2nd Edition
The Essential Marcius Aurelius
The Single Unix Specification, Version 3 (if you're a masochist)


Jul
1
comment DNS server won't work! [Bind9 running on Debian 7; virtualized through Proxmox 3.1]
You should be able to self-delete your other one. If you've already made good progress with the other, you can delete this one instead.
Jul
1
comment DNS server won't work! [Bind9 running on Debian 7; virtualized through Proxmox 3.1]
Please do not crosspost, we can migrate between sites. :)
Apr
28
comment Why do DNS service discovery queries for private networks get sent to my ISP?
The in-addr.arpa suffix made this a reverse DNS question at its core, particularly because you were also inquiring about prisoner.iana.org -- the blackholing servers. At that point I was trying to tool the question toward being reusable for future dupe-closing. Regarding topicality, this involved observations made on a personal device, and reverse DNS (in-addr.arpa) leaking out to your ISP. Please consult meta.SF if you have further questions, this has been discussed exhaustively.
Apr
28
answered Why do DNS service discovery queries for private networks get sent to my ISP?
Apr
28
comment Why do DNS service discovery queries for private networks get sent to my ISP?
This is off-topic for ServerFault. I'm going to answer anyway because I don't see a dupe close candidate on SuperUser. (where this should be migrated to)
Mar
1
awarded  Yearling
Jan
22
comment Onenote shortcut to change mouse cursor from pen mode to text mode
URL link is dead.
Aug
14
awarded  Critic
Aug
10
comment 501 Not Implemented error
Potentially, but it also changes your starting point. This is a very unusual response and very unlikely to come from a stock Apache config. It's likely an interaction with something else within the development environment, which isn't topical for us to pursue here.
Aug
10
comment 501 Not Implemented error
WAMP is not considered very on-topic for ServerFault; refer to this and this. I'm flagging this for migration.
Aug
2
answered no internet while downloading torrents - seems dns related
Aug
2
comment no internet while downloading torrents - seems dns related
RE: tcpdump... tcpdump -i ethX -n -s 128 port domain
Aug
2
comment no internet while downloading torrents - seems dns related
Confirm the contents of resolv.conf?
Aug
2
comment no internet while downloading torrents - seems dns related
Keep in mind that this is DNS...UDP carries the majority of the weight, unless we're dealing with oversized queries. (i.e. EDNS)
Jul
3
comment Apache DNS Resolves Slow on Route53 Configuration
Your authority is fine, I ran the SOA query against www. instead of the base domain. Answer has been edited.
Jul
3
comment Apache DNS Resolves Slow on Route53 Configuration
@Michael I can, and +trace works, but something is jacked on these DNS servers. I've elaborated within the answer.
Jul
3
answered Apache DNS Resolves Slow on Route53 Configuration
Jul
3
comment Apache DNS Resolves Slow on Route53 Configuration
@Michael Pardon? I can resolve all of them just fine. That did leave to discovering the actual problem though...
Jul
3
comment Apache DNS Resolves Slow on Route53 Configuration
There's a disconnect between your perception of a problem and your proposed path to correcting it. A delay in resolving a DNS entity in this scenario occurs somewhere between a client computer, the caching DNS server it points to, and the authoritative DNS server that contains the answer. Nowhere along that path does httpd get involved, as your virtualhosts are not trying to resolve anything. I recommend focusing on the actual problem you see (i.e. show us the DNS query failing).
Apr
24
comment Bad owner or permissions on /root/.ssh/config in a virtual machine
@sethcall This was migrated from ServerFault awhile back, so the original context had to include production environment standards.