Which is good GUI tool to test and external portable hard drive?
btw I am using Linux Mint submitted by vaider_junior [link][10 comments]
View ArticlePrevent SSH from stalling when reloading IPTABLES
Hello gentlemen,On CentOS Servers, whenever iptables is restarted, the SSH connection stalls and I have to close the terminal tab to reconnect. I don't remember this being an issue on other systems,...
View ArticleFor your consideration: my strict iptables
*filter :INPUT DROP [0:0] :FORWARD DROP [0:0] :OUTPUT DROP [0:0]## Basic ## #Unlimited lo access -A INPUT -i lo -j ACCEPT -A OUTPUT -o lo -j ACCEPT #Drop sync -A INPUT -i eth0 -p tcp ! --syn -m state...
View ArticleDoes anyone here have any creative uses for tmpfs?
I am curious as to what common applications of tmpfs has been used by the community.EDIT: Thanks for the responses. Very good stuff. submitted by the_real_thanos [link][37 comments]
View ArticleHow to track down runaway application/process?
Hello Linux Admins. I need some help. I have a "customer" that runs a LAMP stack/jquery server on my virtual infrastructure. They have been having intermittent problems with the box. There is some...
View ArticleCompany moved to ubuntu from xp , need to build centralized linux backup server
junior linux admin here (beginner), company recently moved to ubuntu from xp , need to backup some project files from client machines to a local linux backup server , also there are some xp and imacs,...
View ArticleAny DNS Amplification Attack adive?
Hi,I've had a constant stream (1GiB/day) of these messages in my syslog for a week or so:Apr 15 15:50:25 my-host named[851]: client 111.60.77.116#10734: query (cache) 'cnkdshajqtojmb.www.23us.com/A/IN'...
View ArticleLPI certification training
So I've been looking into Linux certs recently and LPI keeps coming up. Is that a good cert to get? How should I study for it? Note that I'm a poor college kid, so spending money on training is not...
View ArticleRecomended server?
What would /r/linuxadmin recommend for an entry level server? I am thinking about a 1U rack mountable server, maybe Xeon powered with 4Gb and 4 1TB disks, but I'd like your opinion. The server is going...
View ArticleOne certificate store for all certs - either in /etc/pki or /usr/share/ssl?
Hello!After those unfortunate events with openssl and heartbleed, renewal of certificates brought to surface not so much a problem but a dilemma. Since there are many certificates for many services...
View ArticleIn terms of an email server like postfix what are some of the good security...
submitted by vaider_junior [link][11 comments]
View ArticleLearning Bash - Book Recommendation
I have been using Linux for several years however I have never been comfortable in the bash shell to create shell scripts to automate things that I generally have to do manually. Basically bash is not...
View ArticleHow secure is SSH keys?
I currently have an always running Linux (Elementary OS) server that runs a web server and TwoToneDetect (for recording fire dispatch and emailing them out to volunteers) now to access this server, I...
View ArticleFrom an admin perspective, what can one expect from LinuxCon North America...
I've looked through some videos and whatnot on youtube, which tend to be just the main addresses, and Gabe with some others sprinkled in.But, is there a list of things out there that one can expect to...
View ArticleQuick Ubuntu 13 partition help
Sorry for what's probably a dumb question but it's been ages since I had to manually bang around on custom partitions. I need the following to work. I've got the following devices:/dev/sda <-- 500gb...
View ArticleADHD and being a sysadmin (real ADHD, not self diagnosed)
Being a sysadmin requires being methodical, detail oriented, and organized. I have ADHD, and those things are not my strongest point. I was a kickass desktop guy, because I would find out about a...
View ArticleWhat's a good place to start to build a local yum repo (e.g. something like a...
We're getting to enough servers where it's pretty bandwidth intensive having them ALL pull down yum updates individually. I'd like to build a local master server and pull updates to it, then have all...
View ArticleRootkit Hunter false positive help
I am running a Debian Wheezy server and cannot seem to clear up two rkhunter hits:rkhunter -c --enable all --disable none --rwoWarning: No output found from the lsmod command or the /proc/modules file:...
View ArticleAlternatives to dovecot
Hi all,I'm looking for an alternative solution to dovecot for IMAP with virtual domains/users.I can't get this shit working. I've been pulling my hair out for a week, tried about 10-15 different...
View ArticleAdvice request: server and backups for a small NPO
I do contract sysadmin work for a small NPO, with meager demands:<20 FTE~3 print shares~500GB data which will probably dedup to lessCurrently running SBS2K3 in a mixed AD/BYOD environmentChained to...
View Article