Rich Freeman on 12 Oct 2011 06:47:33 -0700 |
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Re: [PLUG] verizon dsl static external address |
On Tue, Oct 11, 2011 at 5:58 PM, Casey Bralla <MailList@nerdworld.org> wrote: > I'm surprised that it changes at all. I've got a dhcp address on my comcast > business account. It has changed no more than twice in 3 years. Well, the words "business account" probably have a large bearing on that. The more you pay per month, the less an ISP is going to tend to do to make your life more difficult if you run servers on the address. I use namecheap for my DNS (free with a registration) and they support dynamic DNS. I then use ddclient to update that address. I picked namecheap since their rates were cheap, and they had decent DNS capabilities for free. They seem to be geared towards domain speculation/parking but they work well enough for my needs for production use. There are other DNS providers that allow for dynamic DNS. Generally the more you pay the lower you can make the TTL which may or may not be important to you depending on how often it changes. For me the 30 minute TTL isn't a big deal since my IP changes rarely, and I have backup MX. >From what I've seen Amazon route 53 has been steadily improving, and while I don't know if anybody has updated any of the common dynamic DNS clients for it, they have an API which almost certainly should support dynamic DNS. They don't care what you set the TTL to but you pay by the request. For a home/vanity site they're probably fairly cost-competitive but if you're going to be running a big site paying by the request could add up. Oh, and while there are lots of dynamic DNS clients out there I find ddclient to be the most powerful. It supports a huge number of DNS providers, and also a large number of IP-determination methods. The simplest is that they'll just poll a what-is-my-IP service at a user-defined frequency and look for changes. It can also connect to many router status pages and detect IP changes, which you can of course poll more quickly without ticking anybody off. It can also periodically re-send the same IP to your DNS provider if they have some kind of keepalive timeout on your account. Overall it is a fairly robust tool and I rarely have to touch it. Rich ___________________________________________________________________________ Philadelphia Linux Users Group -- http://www.phillylinux.org Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug