Cisco Security questions

Whats the difference between IPSec VPN and SSL VPN?
Is there any difference between UTM and Next Gen. Firewall?
Is there any difference between WAF and IPS?
Stateless vs. Stateful Servers

Dear Jinesh,

Thanks for posting here.
Those are global questions and it is hard to answer them here. There are alot of lessons that Rene has made on this website and contains answer to your questions. In case you want to have a specific lesson on a specific question, you can post your ideas here: Lesson ideas

Hope this can help.