Sorry about the confusion. Maybe I can specific more details.
The internal network is under 192.168.0.0/24.
All servers go into the internet via Netscreen 192.168.0.1/24
Except one sever 192.168.0.20/24 will be defined the gateway to SRX200 192.168.0.50/24 - ge-0/0/1
New Server 192.168.30.2/24 will plan to connect to SRX200 192.168.30.1/24 - ge-0/0/2
1./ We would like to set rules or policy to allow access 192.168.0.20 & 192.168.30.2 to each other
2./ If we like to add other server under network 192.168.0.0 to be able to access by 192.168.30.2, do we need to change those server gateway to 192.168.0.50 or not required.
I understand it is better to have one firewall router for the whole network, but the siutation is not allow.
Thanks