How to configure iptables to whitelist?

Question

Debian

Hello, need help!
I'm trying to set up IpTables for a certain range of working machines and with a whitelisted site, maybe someone will tell me what I'm doing wrong, it's right, but all sites open exactly
iptables -I INPUT -m iprange --src-range 192.168.2.8-192.168. 2.25 -j ACCEPT

Answer 1

why input? maybe it should be forward? and in order to block everything else, you need to either make the default policy FORWARD DROP or add a rule to forward drop at the end.

Answer 2

You have chosen the most hemorrhoidal way to restrict traffic - through iptables / netfilter, while not understanding how it works. Perhaps you should use specialized tools? Some Kerio Control or similar