Kofax Communication Server 9.1.1 User Manual
Page 64
Environment Guide
Version 3.00.04
64
© Copyright Kofax, Inc. All information is subject to change without notice.
1. In order to send a packet to the LS1, KCS core has to send it to its IPv
6 “proxy address” FD96::1 (the
IPv6 network must take care that this packet would be routed to the appropriate NAT-
PT router‟s
interface)
2.
The router recognizes the prefix fd96::/96 in the packet‟s destination address and executes the NAT-PT
translation for this packet (due to NAT-PT prefix configuration)
3. Based on the IPv4 and IPv6 source mapping configuration, it replaces the destination IPv6 address
fd96::1 by the 172.20.148.6 and the source address
fd96:eb5f:7508:5760:204:23ff:feac:4172 by its IPv
4 “proxy address” 172.20.148.53
4. The packet is delivered to the IPv4 address 172.20.148.6
Overview:
IPV6
Network
LS1
IPV4
KCSCore
IPV6
IPV4
Network
NAT-PT
Translation
172.20.148.6
fd96:eb5f:7508:5760:204:23ff:feac:4172
NAT-PT prefix: fd96::/96
IPV6 source mapping:
fd96:eb5f:7508:5760:204:23ff:feac:4172 -> 172.20.148.53
IPV4 source mapping:
172.20.148.6 -> fd96::1
KCSCore sends IPV6 packet to LS1
Source:
fd96:eb5f:7508:5760:204:23ff:feac:4172
Destination:fd96::1
NAT-PT translation on the router
Source:
172.20.148.53 <- fd96:eb5f:7508:5760:204:23ff:feac:4172
Destination:172.20.148.6 <- fd96::1
LS1 receives IPV4 packet from KCSCore
Source:
172.20.148.53
Destination:172.20.148.6
KCSCore receives IPV6 packet from LS1
Source:
fd96::1
Destination:fd96:eb5f:7508:5760:204:23ff:feac:4172
NAT-PT translation on the router
Source:
172.20.148.6 -> fd96::1
Destination:172.20.148.53 -> fd96:eb5f:7508:5760:204:23ff:feac:4172
LS1 sends IPV4 packet to KCSCore
Source:
172.20.148.6
Destination:172.20.148.53
Corresponding Cisco router 28xx configuration using static NAT-PT:
Static NAT-PT mapping is quite simple and understandable, but requires one configuration line per IPv6 or
IPv4 host which should be involved in the NAT-PT translation
(see ipv6 nat v4v6 … and ipv6 nat v6v4 … lines below):
! Global settings
!
Ipv6 unicast-routing
no ipv6 cef
!
! Interface related settings
!
! IPv4 interface
interface GigabitEthernet0/0
ip address 172.20.148.35 255.255.255.0
duplex auto
speed auto
ipv6 nat
!
! IPv6 interface
interface GigabitEthernet0/1
no ip address
duplex auto
speed auto
ipv6 address FD96:EB5F:7508:5760::/64 eui-64
ipv6 nat
no ipv6 redirects
!
! NAT-PT configuration
ipv6 nat v4v6 source 172.20.148.6 FD96::1