Cortelco C60 用户手册

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connectivity to specific hosts in the internal network, although communication with other 

hosts in the DMZ and to the external network is allowed. This allows hosts in the DMZ to 

provide services to both the internal and external network, while a firewall controls the traffic 

between the DMZ servers and the internal network clients. 

The following chart describes the network access control of DMZ

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Field Name 

IPSec ALG 

Enable/Disable IPSec encryption.    Default is enabled. 

FTP ALG 

Allow the ALG to securely pass FTP traffic. Default is enabled. 

PPTP ALG 

Allow the ALG to securely pass PPTP traffic. Default is enabled.