Archive Category: Security

WordPress hack attempt…

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Gotta love the script kiddies – keeping us entertained by “hacking” static HTML sites: 5.135.230.129 230.159.29.94[CHR(0)]'<?php print(238947899389478923-34567343546345); ?>’ $domain.com – [11/Mar/2019:10:46:51 -0700] “GET / HTTP/1.1” 200 1533 “http://www.google.com/'<?php print(238947899389478923-34567343546345); ?>'” […]

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This basic guide assumes a functional airflow deployment, albeit without authentication, or perhaps, with LDAP authentication under the legacy UI scheme. This guide also assumes apache airflow 1.10.2, installed via […]

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Tuning EC2 Network Stack

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I recently had an issue with web requests taking 1.2-1.5 seconds from a service hosted in AWS. I had a small SSD-backed EC2 instance with a small SSD-backed RDS instance […]

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Rebooting: quick tip

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Note to self: whenever rebooting a server, login via SSH and restart the OpenSSH daemon first to validate that it will come back up. I just updated an AWS instance […]

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AWS VPC DB Security Group

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The other day I was working with a client and creating a CloudFormation template that used RDS instances within a VPC. I found that while creating the DB security group […]

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With the release of RHEL/CentOS 6.x there are some changes to the way clients authenticate using public keys over SSH with keys stored in OpenLDAP. I was able to get […]

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DNS Vulnerability

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Tuesday a vulnerability was made public which affects all users of the DNS system. The vulnerability was discovered by Dan Kaminsky, a prominent researcher in the area of DNS, who […]

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