Ddclient
From Gentoo Linux Wiki
| It has been suggested that this article be Merged into one article with Dynamic DNS. (Discuss) |
Dynamic DNS is a means by which you can access your home PC (which has a dynamic IP address) using a Domain Name. In other words, you might already remotely log in to your box from work by typing ssh -l username 64.222.222.222, however, were you to use Dynamic DNS, you could access your box like so: ssh -l username mydomain.freedns.org.
ddclient is a piece of software that communicates with hosting services such as DynDNS.org (where you can register freely for up to 3 domain names) to update the resolution of the name when your IP address changes (every few weeks on most cable/dsl systems, and every time on dial-up).
| Code: Installing ddclient |
emerge ddclient cp /etc/ddclient/sample-etc_ddclient.conf /etc/ddclient/ddclient.conf nano -w /etc/ddclient/ddclient.conf rc-update add ddclient default /etc/init.d/ddclient start |
Here is an example configuration using the DynDNS.org service.
| File: /etc/ddclient/ddclient.conf |
daemon=600 # check every 600 seconds syslog=yes # log update msgs to syslog #mail=root # not neccessary mail-failure=root # mail failed update msgs to root #pid=/var/run/ddclient.pid # record PID in file. use=web, web=checkip.dyndns.com/, web-skip='IP Address' # found after IP Address login=CoolAJ86 # default login password=secret # default password #mx=mx.for.your.host # default MX #backupmx=yes|no # host is primary MX? wildcard=yes # add wildcard CNAME? server=members.dyndns.org, \ protocol=dyndns2 \ coolaj86.homedns.org |
To guarantee success, you may wish to use DynDNS.org's automatic config generator. This of course requires you to have an account with DynDNS.org.
To enable ddclient to operate, but also set a minimum amount of security on the ddclient.conf file (it's a plain text file with you ddclient password in it), you may wish to run:
| Code: ddclient.conf security |
chmod 640 /etc/ddclient/ddclient.conf chown root:ddclient /etc/ddclient/ddclient.conf |
If you have a firewall port 80 should be allowed out for this service to work. If you don't have a firewall get one!
| Code: Firewall Rule |
iptables -I OUTPUT -i eth0 -p tcp --dport 80 -j ACCEPT |
This section is a template, meant to be as simple and generic as possible.
View more detailed information or add information here HOWTO Dynamic DNS.
