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seen Nov 11 at 7:54

Jul
23
comment How secure are passwords with under 20 characters length?
According to wikipedia, the LM hashes don't have a salt. MD5 passwords do have a salt, which means that any single password may have (saltspace*password) hashes, which means you need to have 1 rainbow table per salt.
Jul
23
comment How to Exclude Certain Full Backups in Netbackup as Basis for Differential?
If you're not afraid of scripting and using the CLI tools you don't need vault but vault makes it far easier.
Jul
22
answered NetBackup Multiplexing for Oracle RMAN Backups
Jul
22
comment Prevent VRRP Master from becoming Master once it has failed
The voted answer is correct for a general deployment of vrrp where you don't want a master to take over when it returns to service. As you say, there is also a keepalived way of doing this which is probably more correct for when doing linux HA stuff instead of just using vrrp to provide L3 redundancy for a default route (the more traditional reason for using vrrp).
Jul
22
awarded  Organizer
Jul
22
revised Prevent VRRP Master from becoming Master once it has failed
edited tags
Jul
22
comment How to Exclude Certain Full Backups in Netbackup as Basis for Differential?
I agree - it is a bit of work and it's annoying that NB doesn't offer better tools to manage the duplication of backup images, but it also solves a bunch of other problems, and NB actually works very nicely with disk-based backup images. Especially given that there aren't any license issues with disk based backups and disk based storage is so cheap, it does make a nice architecture if you start with it in mind. (clients -> disk -> tape(s))
Jul
22
revised How to Exclude Certain Full Backups in Netbackup as Basis for Differential?
deleted 2 characters in body
Jul
22
answered How to Exclude Certain Full Backups in Netbackup as Basis for Differential?
Jul
22
awarded  Enthusiast
Jul
21
answered Cheapest gigabit managed switch with telnet capability
Jul
21
comment How secure are passwords with under 20 characters length?
If your password were "bowels dungeon metaphysical pierce stagnates" you'd probably be able to remember it after using it a couple times.
Jul
21
comment How secure are passwords with under 20 characters length?
Um, aren't there 2^32 salts for an MD5 password? That's 2^32*650mb. Good luck with that.
Jul
21
comment How secure are passwords with under 20 characters length?
A very long password may not necessarily be written down if it is a set of 5 normal english/your language words. Brains are good at remembering them and there are a lot of them out there.
Jul
21
comment How secure are passwords with under 20 characters length?
MD5 passwords use a pretty big salt. I don't think your rainbow tables are going to be big enough to have both all 8 character passwords and all salts for each possible password.
Jul
19
answered X11 tunnelling through SSH from Fedora 3 server to Windows Vista client fails to work
Jul
19
comment Configure a Local DNS Resolver That Only Caches for a Short Period
Okay, I'll accept that you can ignore the ttls and wipe them more often. The (bind9) example solution described by Dave doesn't seem to do only that, though. The dig response includes the ttl amended by the caching server (300) not what's actually published by the authoritative server. Not that it matters, really, but I think it is noteworthy.
Jul
19
comment Configure a Local DNS Resolver That Only Caches for a Short Period
The whole situation is a bit of a hack though, isn't it? I publish a DNS record with a particular TTL, that's the TTL that should be reflected in a cache. It's a bit of a angels on pinheads sort of situation, but which is better, storing a lie (overriding the ttl) or frequently forgetting the truth (wiping the whole cache). Jason Tan's answer really is the best of the lot.
Jul
17
comment Understanding colo pricing with respect to power needs
That 1A number seems pretty low. I measured a rackable with a pair of opteron 250 CPUs and 8gb of ram in it -- under load 2.5A/110v. I took out one of the CPUs (and 4gb of ram) and the power draw went down to 1.2A.
Jul
17
answered Why su to root instead of logging in as root?