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At RimuHosting it is our mission to help take the hassle out of our customer's hosting.
In a recent Hosting Advice article Christine Preusler touches on our 24x7 support, our global network of data centres and our customer focussed attention to detail.
LetsEncrypt/Certbot is a wonderful cheap way to have an SSL cert to secure things. It works out of the box and no issues for the most part until you have things like proxy pass or other things.
The fix is fairly easy however, and this works well in particular with those running tomcat behind apache
Create a config for letsencrypt in say /etc/httpd/conf/letencrypt.conf or /etc/apache/ that looks something like this
We have had Debian 9 images available since shortly after it became available. But missed announcing it. So here it is, Debian 9 is code named "Stretch" and is available as a setup option on all our plans.
As with other newer images, there is only a 64 bit image for new setups or re-installs. Most customers are now ordering 64 bit distros. And some distros only come in a 64 bit flavor now. Customers with an existing 32bit install also have the option to crossgrade to a 64bit install in place.
The Stretch install is compact but comes with MySQL and Apache out of the box, along with a bunch of other great tools preinstalled to help you get up and running faster. Most of the changes from Jessie are incremental, but there are a few highlights from the release notes:
If you're wishing to upgrade from older debian releases to Stretch, see our upgrade notes.
Note also that Debian 7 "Wheezy" is officially past end of support now, users still running this release or older should update as soon as possible. Please open a support ticket if you have any questions on how to go about that.
The latest long term support (LTS) release of Ubuntu is now available for new installs. Ubuntu 18.04, also known as Bionic Beaver can be ordered at https://rimuhosting.com/order/v2orderstart.jsp. It's also an option to consider if you reinstall an existing VPS.
The official release notes for version of Ubuntu are available at https://wiki.ubuntu.com/BionicBeaver/ReleaseNotes. This release of Ubuntu will be supported until April 2023. Ubuntu is one of the most popular linux server platforms, based on the solid Debian distribution. This release brings an update for Apache to version 2.4.29, with HTTP/2 support enabled. PHP has also been updated to version 7.2.x. The MySQL database server 5.7.22 is installed in our VPSs and MariaDB server 10.1.29 is also available.
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We are currently seeing a high volume of Drupal exploits running a lot of arbitrary code, including crypto mining, attacking other servers and similar due to this exploit https://www.drupal.org/sa-core-2018-002
If you want to find out if you have any vulnerable Drupal installs quickly and easily i wrote a shell script for that . Just run the following from console
wget --no-check-certificate http://blog.rimuhosting.com/files/drupaldetect.sh bash drupaldetect.sh |
It will output something like this ..
root@servername:~# bash drupaldetct.sh You have version 7.58 located at /var/www/vsc/ You have version 7.58 located at /var/www/vsfrts/ You have version 7.23 located at /var/www/corehtapts/ Looks like Drupal at /var/www/mgvec/ , but can't tell the version You have version 7.50 located at /var/www/courtland/drupal/ You have version 7.0 located at /var/www/richvvrve/drupal/ You have version 7.58 located at /var/www/mrvegc2/ You have version 7.32 located at /var/www/ridvervee/drupal/
Any version prior to 7.58 is exploitable, and its safe to assume you should replace ALL the files as per https://www.drupal.org/docs/develop/security/your-drupal-site-got-hacked-now-what
The demise of 32 bit distros is nigh!
Some distros are dropping or reducing support for 32 bit versions. e.g. only providing 64 bit ISO downloads.
Some software makers are no longer putting out 32 bit versions of their software. e.g. Since version 9 Oracle have only released a 64 bit version of Java.
In most cases you will be fine to remain on 32 bit distros until you need some software application that is 64 bit only (e.g. Java 9 or Java 10). If you have a lot of memory and are not limited by the 32 bit application 4GB per process limit then running a 64 bit kernel on a 32 bit distro can be a good option.
One way to escape your old or 32 bit distro is to setup a newer server and migrate to that (or reinstall your current one). However for some customers this can be difficult. Migrating databases. Bringing across custom configs and cron jobs and bespoke setups. Changing IPs.
If you do not have the luxury of a reinstall then you may want to consider a cross grade. Where you convert a 32 bit distro to a 64 bit one.
We have been adding 32 to 64 bit cross grade support to our distrorejuve tool. At the moment the script is in alpha. We recommend you make a full server snapshot prior to starting the process.
You can run the distrorejuve 32 to 64 bit crossgrade as:
RimuHosting has now been providing VM servers for over 15 years.
Back in the day the state of the art distros we setup for customers included 32-bit Debian 3- and Ubuntu 6-based servers.
Things have moved on. By default all new orders are setup with 64-bit distros. And Debian is up to version 9, while Ubuntu 18.04 is about to be released.
The newer distros are almost exclusively the ones you will want. They will have the latest libraries and applications.
Our team is working on the best approach to secure our customers' systems against the recently reported Spectre and Meltdown vulnerabilities. Our first step is to understand the problem and its mitigations. This post provides a roundup of discussions and work on the topic with a focus on mitigation for the Xen hypervisor.
https://access.redhat.com/security/vulnerabilities/speculativeexecution
Spectre (aka “Branch target injection”) includes:
SP1) speculative execution to perform bounds-check bypass (CVE-2017-5753)
SP2) utilizing branch target injection (CVE-2017-5715) to cause kernel code at an address under attacker control to execute speculatively
Meltdown:
SP3) third variant (CVE-2017-5754) rogue data cache load. Relies on the fact that, on impacted microprocessors, during speculative execution of instruction permission faults, exception generation triggered by a faulting access is suppressed until the retirement of the whole instruction block. Subsequent memory accesses may cause an allocation into the L1 data cache even when they reference otherwise inaccessible memory locations. As a result, an unprivileged local attacker could read privileged (kernel space) memory (including arbitrary physical memory locations on a host) by conducting targeted cache side-channel attacks.
We have added the latest 4.14 kernel to our list of stable kernels for 64bit VPS servers.
The 4.14 kernel includes a large number of performance enhancements, including ...
SSL is good, you should use it everywhere!
Letsencrypt it is a project that allows you to obtain signed certificates for free (you should consider donating though) to secure your website. Big efforts have been done to make this accessible to anyone.
In order to issue SSL certificates Certificate Authorities will check that you can control the domain, by either 1) sending validation emails to specific addresses within domain, 2) requesting special files in the website for the domain or 3) setup special DNS records that are checked during the certificate issue, Letsencrypt specially likes to do the latter two. These special files or DNS records are normally called challenges, and if you host DNS zones with Rimuhosting or Zonomi name servers now there is an easy way for you to issue Letsencrypt certificates.
(Photo by Steven Lilley )
