How to bypass a website ban by DNS over HTTPS?

Recently I found that my default search engine DuckDuckGo (duckduckgo.com) was not opening in any web browser, while all other websites are working fine. In a basic troubleshooting, I found that my ISP ( ACT Fibrenet in Bengaluru, India) is blocking my DNS query to duckduckgo.com. ( See my blog on Domain name service DNS ).

Show running-config as read-only in Cisco routers without using AAA with TACACS+ and RADIUS

Sometimes it happens that we have to provide read only access to the running configuration of routers to someone who has a lower privilege. Cisco defines privilege level 15 as full access privileged EXEC mode and privilege level 1 as the normal user exec mode. In between levels are not defined by default. We can use privilege command to move commands from one privilege level to another.


commands:

privilege exec all level 10 show running-config

alias exec shrun show running-config view full

username hdesk privilege 10 secret hdesk@1234

Explanation:

1. Move show running-config command to a privilege level 10
2. But to view the running configuration, instead of show running-config, we have to type complete show running-config view full. So let's create a alias named shrun. This is optional.
3. Now create a user with the privilege level 10. This user will be now able to see running configuration using the alias command shrun .

Automatic back up of Cisco routers - Kron scheduler

If your are a network engineer, it is a monthly or weekly job to take back up of the router configurations . If it is a small network with a few routers or switches, it is easy to manage. But if it is a large network , It is a hectic job. So I rely on Cisco Kron command.