Category Archive: Linux

Feb 04

Ubuntu SNMP config for Zabbix and Checkpoint

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I’m setting up SNMP monitoring for our Checkpoint devices in AWS and Zabbix needs the SNMP client configured. A good tutorial is located here: But adding the templates for checkpoint was more involved than I thought. I grabbed the templates here: https://share.zabbix.com/network-appliances/checkpoint-fw-1-hardware. Then created the mapping by going to Administrator –> General –> On the …

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Oct 30

Build bitcoind from source Fedora 22

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Bitcoin, Linux

Disclaimer – this does NOT work. It’s close, but no love. As usual there are no good instructions on the net to do this. First get the source, I already had git installed and I’m actually building Feathercoin instead of bitcoin but it should be the same for both. Also I’m presuming that you already …

Tags: Feathercoin

May 20

Tomcat 8 redirect and force SSL

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Edit the tomcat8/conf/server.xml and add the following for 80, and another for 8080 if need be. <Connector port=”80″ protocol=”HTTP/1.1″ connectionTimeout=”20000″ URIEncoding=”UTF-8″ enableLookups=”false” redirectPort=”443″ /> Now Edit the tomcat8/conf/web.xml and at the bottom just above </web-app> put in the following and changing Entire Application to your application in webapps. <!– SSL settings. only allow HTTPS access …

Tags: SSL, tomcat

May 19

Java 8, tomcat 8, SSL setup from pfx, using 443

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This took me a day to setup on a new CentOS Amazon image. To be honest I’d never configured SSL for tomcat before, and this was the first time that I’d used tomcat8. So I just want to go over the steps I had to do so I’ll remember all of the tweeks needed. Configuring …

Tags: tomcat java openssl keystore

Dec 05

How to build Openssl from source

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Recently we had to install openssl but for the 32-bit platform. This is how I did it. wget http://www.openssl.org/source/openssl-0.9.8x.tar.gz tar zxvf openssl-0.9.8x.tar.gz setarch i386 ./config -m32 shared make clean; make install In general though for anything that you need to build the following command will work: ./configure && make && sudo make install

Tags: source code

Oct 22

gpg command line

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First create a key: gpg –gen-key For generation I use the default of RSA and RSA, and I use 4096 bits, and i usually let the keys live for 1y. Create a Revocation Certificate so you can Revoke you key on a keyserver gpg –gen-revoke –armor –output=GPGRevocationCertificate.asc your@email.address Create your ASCII public key so other …

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Oct 21

Unix flush or refresh DNS cache

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For Red Hat systems the command is service nscd restart For Debian systems its /etc/init.d/nscd restart

Tags: DNS

3 comments

Jun 19

chroot sftp in AWS with likewise / pbis 7.5+

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Oh the humanity! Configuring chrooted sftp always seems like a chore when you combine it with an out side authentication like winbind or pbis (Power Broker Identity Services). So configuring /etc/ssh/sshd_config is straight forward. All you need to change is: http://en.wikibooks.org/wiki/OpenSSH/Cookbook/SFTP But I kept seeing errors in /var/log/secure that said denied access because they …

Tags: AWS, likewise, pbis, sftp

Mar 18

Command line zip, unzip, and tar

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In maintaining linux systems I often find that I need to zip the contents of a folder or unzip some settings. Zip is useful for compressing and transmitting files. There isn’t anything new here and it is straight out of the man pages but since I only use it once every 6 months I’m going …

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