Amer Networks E5Web GUI - Manual (Page 245)

• Destination Network: all-nets
• Service: dns-all
3. Select Address Translation and in the dialog:
• Under Source Address Translation enable NAT
• Close the dialog
4. Click OK
See Section 3.6, “IP Rules and IP Policies” and Section 3.6.7, “IP Policies” for more information about
rules and policies.
3.11.6. Defining DNS Servers
cOS Core needs external DNS servers to be defined in order to resolve certain FQDNs. This is
particularly important for certificate handling. Up to three DNS servers can be manually specified
to cOS Core and at least one should be configured for DNS lookup to function.
Example 3.45. Configuring DNS Servers
Assume that the cOS Core address book already contains the IPv4 addresses dns_server_1 and
dns_server_2 for the primary and secondary DNS servers.
Command-Line Interface
Device:/> set DNS DNSServer1=dns_server_1 DNSServer2=dns_server_2
InControl
Follow the same steps used for the Web Interface below.
Web Interface
1. Go to: System > Device > DNS
2. Enter the following:
• Primary Server: dns_server_1
• Secondary Server: dns_server_2
3. Click OK
Automatic DNS Configuration through DHCP
If connection to an ISP is done with DHCP then the ISP's DHCP server should automatically
configured at least one DNS server in cOS Core at the same time all other IP addresses are
Chapter 3: Fundamentals
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