Category: Server
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Bind9 – Sending Reverse Records To Another Name Server
Occasionally I’ll have the need to send a block of reverse DNS entries from my BIND9 server over to someone else. When you create the entries in your reverse zone, be sure to use a DNS name verses an IP address for the alternate name server: If my subnet is 1.1.1.0/24 and I wanted to…
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Windows Port Knock Application
****The application now accepts DNS names and will correctly resolve them when knocking…rejoice!**** I’ve been getting a lot of false positives from virus scanners: IE Virustotal This is a known issue with all autoit compiled scripts. They are NOT infected, it’s just that Autoit code has been picked up by virus scanners at one point,…
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WordPress Pingback SPAM
I’ve been getting tons of WordPress pingback spam. Pingbacks are a little wordpress notification that will tell you when some other wordpress user links to your blog. It tries to pop into your comment section. This is great unless you are me. I get 20 spam pingbacks a day. By default they are allowed on…
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Tracing DNS Servers With Dig
For the people that like to see the hops that their DNS entries take, there is the trace option in Dig. If you are trying to diagnose DNS SOA issues with forward or reverse zones, this is a must! Forward traces: dig gregsowell.com +trace [root@dns2 ~]# dig gregsowell.com +trace ; <<>> DiG 9.2.4 <<>> gregsowell.com…
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Run Linux On Your RouterBoard
Anthony, who accomplished this hack, was kind enough to let me repost it here. It seems he has found a way to run Debian linux on his RB433AH, and he was kind enough to show us all how it is done. “Basically the technique is to netboot the router off a vmlinux-initramfs image I constructed…
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Endian Firewall – Community Edition
I’d not heard of these guys until a month ago. They have appliances and also a software based version you can install on your own server. Best of all, they have a community edition. I’ve downloaded a copy, but I’ve yet to actually test it. Here’s some of the features: Stateful Firewall – Pretty standard…
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Send Yourself Emails Via a Script/Cron That Attaches a File – Linux
I’m using a nice little utility called mutt. To get this guy installed and you are running CentOS, use: yum install mutt To send yourself an email with an attachement and no text: mutt -a /tmp/BackupFile.tar -s "Your backup" [email protected] < /dev/null To send the same file but with text try this: mutt -a /tmp/BackupFile.tar…