How to block an IP-range

I know there is a way to block a specific IP-address.
It can be done with:

route add -host 12.34.567.89 reject

Is it also possible to block a whole range like for example 12.34.567.** and how can it be done?

 

How about using the hosts.deny?

More info with: man hosts.deny

 

I'm not sure about the route command, but did you take a look at

Code:

man route

? Maybe they have some examples there.

 

I will try one and the other. Thanks for your reply.