Networking

How to Use Mosh on CentOS 7 for Remote Server Administration

Mosh, the abbreviation of "mobile shell", is a rising remote terminal application designed to provide better connectivity and user experience than SSH-based terminal applications. When talking about remote server administration technologies, SSH obviousl...

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How to Install OpenNMS on Ubuntu 16.04 LTS

OpenNMS is an enterprise-grade open source network management platform that can be used to monitor and manage numerous devices from a single instance. With all kinds of metrics collected by OpenNMS, system administrators can easily discover service outage...

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How to Install OpenNMS on CentOS 7

OpenNMS is an enterprise-grade open source network management platform that can be used to monitor and manage numerous devices from a single instance. With all kinds of metrics collected by OpenNMS, system administrators can easily discover service outage...

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Example Letter of Authorization for BGP Announcements

Please use the following template when requesting authorization for BGP announcements. AUTHORIZATION LETTER [DATE] To whom it may concern, This letter serves as authorization for Vultr with AS20473 to announce the following IP address blocks: [IP SPA...

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How to Setup Dynamic DNS

What is Dynamic DNS? Let's take a common example of a DNS setup. Your domain is example.com, and you have "A" records for server1.example.com and server2.example.com. Server1 is hosted in Vultr, but server2 is hosted on a local network, like inside your ...

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Install MikroTik RouterOS on a Vultr VPS

MikroTik RouterOS is a Linux kernel based operating system that turns a computer into a network router. It possesses the following features: Firewall. Virtual private network (VPN) server and client. Bandwidth shaping. Quality of Service (QoS). Ability...

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Configuring BGP using Quagga on Vultr (CentOS 7)

Vultr's Bring Your IP Space functionality allows for unprecedented freedom in assigning your own IP resources to servers on the Vultr cloud. We generally recommend using BIRD to announce your IP space. There are a few solid alternatives to BIRD in case yo...

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Installing Bro IDS on Fedora 25

Introduction Bro is an open-source network traffic analyzer. It is primarily a security monitor that inspects all traffic on a link in depth for signs of suspicious activity. More generally, however, Bro supports a wide range of traffic analysis tasks ev...

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Setup NFS Share on Debian

NFS is a network-based file system that allows computers to access files across a computer network. This guide explains how you can expose folders over NFS from one instance to another. Vultr's private network feature assists you with securing the connect...

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Using Hosts File to Test Websites

The hosts file is a special file on your workstation computer that will store IP and name information. This file is checked before DNS, so if you place an entry in this file it will supersede anything set in DNS. This feature is very useful in testing w...

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