ESR series service routers.ESR-Series. User manual
SSH Server/
Telnet Server
SSH and Telnet server features allow you to establish connection to 
the device and perform device management.
Automatic configuration restore Device features automatic configuration restore system designed to 
prevent remote access loss after re-configuration. If the configuration 
change is not confirmed in the specified time, configuration will be 
rolled back to the last known state.
2.2.7  Network security functions
Table 7 lists network security functions of the device.
Table 7 – Network security functions
Security zones All router interfaces are distributed by security areas.
For each zone pair, you can set the rules that determine the possibility of data 
transmission between zones, data traffic filtering rules.
Data filtering For each zone pair, you can specify the rule set that manages the filtering 
process for data transmitted through the router.
Device command interface provides appropriate means for detailed 
configuration of the traffic classification rules and to apply the resulting 
solution for traffic transmission.