ATL Telecom AM2 - Manual (Page 48)

ATL User Guide
AM2 G.SHDSL Modem 48
6.5.7.2 AUTOMATIC FIREWALL SECURITY
This level enables basic firewall security, all DoS protection, and the SPI filter function.
Press Finsih to finish setting firewall.
The screen will prompt the parameters, which will be written in EPROM. Check the parameters.
Press restart to restart the modem or press Continue to setup another function.