Help required in configuring sterlite router

Hello EverybodyFor diagnosing purposes i enabled a configuration named somewhat like SSI or something Advanced Setup page in the MTNL Sterlite router.Now, i no longer able to connect to the router over WAN.Now, i am guiding my person to revert the configuration.Can anybody assist me by pin pointing the exact location of the configuration option?

do u mean spi??

do u mean spi??

Superrrrrrrrr
Yeahhhhhhh
I was trying to find that very thing.
Can you let me know exactly where to find SPI?

advanced setup>firewall. set firewall to enabled. spi to disabled.

Thank you so much for your quick reply.