Cisco Cisco Email Security Appliance C160 Guia Do Utilizador

Please be aware that you may lose access to the appliance after submitting and 
committing your changes if one of the following conditions is true:

If you select Only Allow Specific Connections and do not include the IP 
address of your current machine in the list. 

If you select Only Allow Specific Connections Through Proxy and the IP 
address of the proxy currently connected to the appliance is not in the proxy 
list and the value of the Origin IP header is not in the list of allowed IP 
addresses. 

If you select Only Allow Specific Connections Directly or Through Proxy 
and 

the value of the Origin IP header is not in the list of allowed IP addresses 

OR 

the value of the Origin IP header is not in the list of allowed IP Addresses 
and the IP address of the proxy connected to the appliance is not in the 
list of allowed proxies.

To create an access list for the Email Security appliance:

Use the System Administration > Network Access page. 

Click Edit Settings. 

Select the mode of control for the access list.

Enter the IP addresses from which users will be allowed to connect to the 
appliance.

You can enter an IP address, IP address range or CIDR range. Use commas to 
separate multiple entries.

If connecting through a proxy is allowed, enter the following information: 

The IP addresses of the proxies allowed to connect to the appliance. Use 
commas to separate multiple entries.

The name of the origin IP header that the proxy sends to the appliance, which 
contains the IP addresses of the remote user’s machine and the proxy servers 
that forwarded the request. By default, the name of the header is 

x-forwarded-for

.

Submit and commit your changes.