Use your Cisco router as a primary DNS server
In IOS release 12.3, most Cisco routers can act as primary DNS servers (formerly, this functionality was only available as part of DistributedDirector product), alleviating the need for a host-based DNS server in your perimeter network. To configure a router to act as primary
DNS server for a zone, use the ip dns primary command, for example:
Use the ip host ns command:
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DNS server for a zone, use the ip dns primary command, for example:
Next, you need to define primary and secondary name servers for the domain.ip dns server
ip dns primary website.com soa ns.website.com
[email protected] 86400 3600 1209600 86400
Use the ip host ns command:
ip host website.com ns ns.website.comYou can also define mail routing for the domain with the ip host mx command:
ip host website.com ns ns.isp.com
ip host website.com mx 10 mail.website.com
ip host website.com mx 20 mail.isp.com
Finally, you need to define hosts within your domain (with the traditional form of the ip host command):
ip host ns.website.com 192.168.0.1 ! router's IP address
ip host www.website.com 192.168.1.1
ip host website.com 192.168.1.1 ! alternate for www.website.com
ip host mail.website.com 192.168.1.2
Download Router Configuration to a Web Browser
If you have HTTP server enabled on your router (on by default in many IOS releases, enable with ip http server), you can download the current router configuration into your web browser simply by typing in the URL http://router/exec/show/running/full. To get the startup configuration, use http://router/exec/show/startup-config/CR.
Of course, you need to authenticate to the router. By default, you can use anything as the username and the enable-password as the password, but you also use local usernames or AAA authentication. To use local usernames, configure ip http authentication local and enter username and password with the username username privilege 15 password password configuration command.
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Of course, you need to authenticate to the router. By default, you can use anything as the username and the enable-password as the password, but you also use local usernames or AAA authentication. To use local usernames, configure ip http authentication local and enter username and password with the username username privilege 15 password password configuration command.
Use HTTP to Store Router Configurations on Web Server
It's been possible for a long time to use HTTP to download information from a web server to a router. In IOS release 12.3(2)T, integrated in 12.4 release, Cisco has introduced the ability to store local information (for example, router configurations) on a web server. To use this feature, configure the username and password giving you write access to the web server with:
ip http client username web-user
ip http client password secret-password
After the username and password have been configured, you can use copy running http: to copy router's configuration to a web server.
Note: on the web server, you have to configure the target virtual directory for write access (default: disabled) and allow file-system write access to the underlying physical directory for the target user.
Alternatively, you can specify the username and password in the URL using the copy running http://user:password@host/file syntax.
router#copy running http://student:[email protected]/router-config
Address or name of remote host [192.168.0.2]?
Destination filename [router]?
Storing http://student:[email protected]/router-config !!
4231 bytes copied in 0.864 secs (4897 bytes/sec)router#