Cisco Cisco Email Security Appliance X1070 Guia De Informação

Contributed by Cisco TAC Engineers.

Oct 09, 2014

Introduction
IP Interfaces
Listeners
Other Features Supporting IPv6 Address Entry
Supported IPv6 Address Formats
Related Information

This document describes how the Cisco Email Security Appliance (ESA) supports Internet Protocol Version 6
(IPv6) address compatibility.

Individual or both IPv4 and IPv6 addresses can be assigned to the ESA IP Interface which is bound to the
physical data ports on the device.

Note: IPv4 and IPv6 addresses with the same subnet cannot be configured on separate physical Ethernet
interfaces. IPv6 addresses must use leading zeros, such as 2001:0db8:85a3:8a2e:0370:7334.

Listeners support both IPv4 and IPv6 addresses. You can use either protocol version or both on a single
listener. The listener will use the same protocol version for mail delivery as the connecting host. For example,
if the listener is configured for both IPv4 and IPV6 and connects to a host that uses IPv6, the listener uses
IPv6. However if the listener is configured to only use IPv6 addresses, it cannot connect to a host that is only
using IPv4 addresses.

Gateways (default routers) and static routes, GUI: Network > Routing

• 

SMTP Routes, GUI: Network >SMTP Routes

• 

SMTP Call Ahead, GUI: Network >SMTP Call Ahead

• 

Incoming Relays, GUI: Network >Incoming Relays

• 

Trace, GUI: System Administration >Trace

• 

Host Access Table (HAT) senders list within Sender Groups, GUI: Mail Policies >HAT Overview

• 

Recipient Access Table (RAT) Recipients, GUI: Mail Policies >Recipient Access Table

• 

Content Filters (Condition: Remote IP | Action: Send to Alternate Destination Host)

• 

Destination Controls, GUI: Mail Policies >Destination Controls

•