RimuHosting Blog

Tag: dns

  • DNS Aliases for bare/root/apex domains on Zomomi and RimuHosting DNS

    Zonomi and – very shortly – RimuHosting have been updated to permit ALIAS records for root/bare/apex domains. Background. Many web services – eg. Azure, AWS, or our own Woop! Host wordpress hosting service – make use of CNAMEs. They let you point a domain like www.example.com to an alias like site-1234.woop.host. This lets the service…

  • DNSSec

    DNSSec lets domain owners give their registrar a key that permits DNS clients to verify the records they are receiving are valid ones for the zone. This check can help to protect DNS clients getting spoofed records from their ISP name servers. After you enable DNSSec you will need to add a key at your…

  • Whitelist your own computer in fail2ban

    Fail2ban is a great “dynamic” firewall for servers that is installed by default on many of our VPSs, and we can install it on your VPSs at your request. It protects against brute-force attacks, where an attacker is trying to guess a password or exploit certain classes of vulnerabilities on servers. One potential problem with…

  • DNS amplification DoS attacks

    If you are running a DNS server, then you need to check it is not being co-opted into ‘DNS amplification attacks’. Random nasty servers (typically part of virus created bot-nets) send your DNS server a short request but use a fake source IP address.  Your DNS server then sends a (typically) long reply back to…

  • Setting up Domains Keys (DKIM) on Postfix

    This is a quick and fairly painless way of setting up DKIM, on a postfix server. DomainKeys Identified Mail (DKIM) is a method for associating a domain name to an email message, thereby allowing a person, role, or organization to claim some responsibility for the message and helps verify that your mail is legitimate. This…

  • Wildcard DNS queries added to our DNS API

    We are updating our DNS API (Zonomi and RimuHosting) to support a name/host argument of **.example.com (where example.com is your DNS zone).  This will find any DNS records ending with example.com. This could be used, for example, in providing your own UI from end to our name servers.  Or for setting up slave DNS servers.…

  • Migrating VPS with virtualmin – Multiple DNS changes

    We have had a customer move from one host to a new one with Virtualmin, this is usually ok, except in this case he had DNS hosted on his own VPS, most of it pointing to his old IP address. The task was to update all DNS records on his VPS without manually clicking each…

  • Pingability Facelift

    While I was kicking back camping in Yosemite Justin here has been ‘messing about’ with CSS on our Pingability web check and alert service.  Bringing it from my 2003 design to something a little more contemporary.  Thanks, Justin. — Pingability lets you monitor your websites pages, check that things are running OK, and alert you…

  • 66% off .org domain name registration anyone?

    We use gandi.net internally for some of the domains we have.  Gandi have given me a few ‘promo codes’ for 66% off .org domains.

  • Did you know we have a DNS API?

    Seems some cool features get lost, and only staff know about them rather than the customers. I thought I’d point out to people we have an API for our DNS. This can be used by scripts for adding domains to your own VPS using PHP curl, or similar other things. Another excellent use is fail…