Monthly Archives: September 2017

Help! SSH attack on Ubuntu 14.04.2 LTS – use sshdfilter with ufw

If you’ve got a *Nix machine on the public Internet, you will experience this at one time or another. If you run sshd on its’ known port 22, some script kiddie out there will attack it. With that, you’ll see … Continue reading

Posted in Computers & Technology, Unix/Linux | Tagged , , , , , , | Leave a comment

DNS server not resolving external addresses – bind9 Ubuntu 16.

I ran into issues with Bind 9 on Ubuntu 16 very recently. I use an internal caching DNS server for a few reasons – try to protect myself from malware, log DNS requests on my network to have an idea … Continue reading

Posted in Computers & Technology, Unix/Linux | Tagged , , , , | Leave a comment

Protect your home network using TomatoUSB – how to only allow only HTTP/S out!

While we continue to see the WannaCry and other malware around, I thought I would secure my own network. Since I allow visitors onto their networks, I figured I would configure all new DHCP’d hosts to access the Internet only … Continue reading

Posted in Computers & Technology, Hardware, Unix/Linux | Tagged , , , , , , , , , , | Leave a comment

How to send tweets at random times with a *NIX CLI …

Twitter CLI is a wonderful tool for automatically sending tweets. Very simply, after installation, you just need to run ‘t update “message”‘ and it would tweet your message. I wanted to do some tweeting randomly via cron, but since cron … Continue reading

Posted in Computers & Technology, Unix/Linux | Leave a comment

esxtop shows a bunch of stuff … what’s up with this!?

It’s been a while since I’ve had to run esxtop, but when I did recently, I got a bunch of stuff on my screen like this: o termcap entry for a `xterm-256color’ terminal”(PDH-CSV 4.0) (UTC)(0)”,”\\localhost.shocknetwork.com\Memory\Memory Overcommit (1 Minute Avg)”,”\\localhost.shocknetwork.com\Memory\Memory Overcommit … Continue reading

Posted in Computers & Technology, Unix/Linux, VMware | Leave a comment

SSH without a password using keys troubleshooting – use RSA instead?

I used a procedure from this: http://sshkeychain.sourceforge.net/mirrors/SSH-with-Keys-HOWTO/SSH-with-Keys-HOWTO-4.html Basically, you just run ssh-keygen to generate a public key and put it on the server’s ~/.ssh/authorized_keys file and that’s about it. The issue I can into was that the server did not accept … Continue reading

Posted in Computers & Technology, Unix/Linux | Tagged , , , , , | Leave a comment