[SGVLUG] DDNS -- was Re: Cron question

Tue May 16 13:16:23 PDT 2017

I was fortunate to sign up with dyndns.org when they were first starting up so I have a legacy non-expiring account but just about all of the routers I have used in the last 10+ years, both purchased and ISP provided, have an option to automatically update a dynamic DNS service.  If possible, try to find a service that allows the use of client keys that can only be used to update your IP and not manage your account.  

https://en.wikipedia.org/wiki/Dynamic_DNS <https://en.wikipedia.org/wiki/Dynamic_DNS>

Claude

> On May 16, 2017, at 11:59 AM, Jess Bermudes via SGVLUG <sgvlug at sgvlug.net> wrote:
> 
> Namecheap and probably other domain registrars provide ddns for you with your purchase, so then if you have a router with openwrt or something you can set it up pretty easily 
> 
> On May 16, 2017 14:39, "Michael Proctor-Smith via SGVLUG" <sgvlug at sgvlug.net <mailto:sgvlug at sgvlug.net>> wrote:
> If you don't want to do it as root, or your normal account do it. Then create a new user to do it, don't reuse an existing system account. With cron jobs the place you normal fail is that from cron you don't have normal user path stuff added as it is not a login shell.  
> 
> But in seem like you are solving a solved problem that we have all gone the road of. That being wanting to access your network remotely and having a dynamic ip address. So if I may suggest looking into one of the free dynamic dns services (DDNS) and save yourself the trouble of having to check email to find your home ip address. Many home routers will automatically update DDNS when there ip address changes. 
> 
> On Tue, May 16, 2017 at 11:20 AM, Bryan Pesterfield via SGVLUG <sgvlug at sgvlug.net <mailto:sgvlug at sgvlug.net>> wrote:
> Hello all,
> 
> I have a script I wrote to monitor my external ip and send me an update via email when it changes (it checks ipv4.icanhazip.com <http://ipv4.icanhazip.com/>, so no parsing necessary). While the books and webpages I have looked at so far make it appear easy to set up a cron job, I am unsure of what user should be used to run the job (since nothing I looked at specified what accounts should be used, they appear to be indifferent to it). 
> 
> It didn't seem very secure to have root or myself (aka a regular user) run the job, so I am hesitating on setting it up until I know what account should be used to run it. Do I have a system account do it, or do I set up an unique account just for it? What's the best way to do this?
> 
> Thanks in advance,
> Bryan Pesterfield 
> 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sgvlug.net/pipermail/sgvlug/attachments/20170516/387f4458/attachment.html>