Nice Article Omar, you deserve a thumbs up and 5 star. :) Regards, Mithun Adhikary

Hi Richard, I am seeing this post after 2 years and hope your query is already been resolved but if not then backdoor is a network command within the BGP, so if your BGP process is running then it should work and if your BGP process is not working t...

Hi guys,  I do not disagree with the solutions you provided, just to add one more solution to this. We can play with prefix list instead of routing. Block entire class d family in physical path and allow the same in the GRE and block rest in the GRE....

if your booting IOS is c2800nm-advipservicesk9-mz.123-14.T7.bin then you can delete c2800nm-advsecurityk9-mz.124-3i.bin but before doing that keep a copy of the IOS with you for safer side also make sure that "boot system flash:c2800nm-advsecurityk9...