grs blog

Tag: ubuntu

  • how to install zimbra on ubuntu 16.04

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    by

    dm
    in

    Guide for installing zimbra on ubuntu 16.04. If you use clouldflare or another dns service provider you can skip bind part. https://linoxide.com/ubuntu-how-to/setup-zimbra-suite-ubuntu-16/

  • install certbot on ubuntu 16.04

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    by

    dm
    in

    On Ubuntu systems, the Certbot team maintains a PPA. Once you add it to your list of repositories all you’ll need to do is apt-get the following packages. $ sudo apt-get update $ sudo apt-get install software-properties-common $ sudo add-apt-repository ppa:certbot/certbot $ sudo apt-get update $ sudo apt-get install python-certbot-apache Reference: https://help.ubuntu.com/community/Repositories/Ubuntu#Adding_PPAs

  • protect zimbra from memcached attack

    protect zimbra from memcached attack

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    by

    dm
    in

    Zimbra uses memcached and if not properly configured could lead to a vulnerable system. If you want to read more on memcached attack read this: https://blog.cloudflare.com/memcrashed-major-amplification-attacks-from-port-11211/ How to resolve this vulnerability in 3 steps: Enable firewall on your server Setup zimbra specific rules Bind memcached to localhost Deny memcached port from localhost Let’s start.