Answer Posted / manoj

Iptable is filtering tool, check point, can create natting
(Source nat & destination nat), Inbound, Outbound Security,
Able block & allow port forwording, block or open a port,
block & allow service for specific domain & for
user,Maintain firewall security as well.

I would like to know whether Simado and Setu products are they EPBX or not ?

2365

What are system calls used for process management in linux?

1113

Explain process management system calls in linux?

1055

what are different ways the context switch happens from user to kernel space or vice-versa ?

2641