Series Routers - Juniper ACX1000 Configuration Manual

ACX Series Universal Access Router Configuration Guide
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NAT is described in RFC 1631 to solve IP (version 4) address depletion problems. NAT
has been found to be a useful tool for firewalls, traffic redirect, load sharing, network
migrations, and so on.
NOTE: In ACX Series routers, NAT is supported only on the ACX1100
AC-powered router and ACX500 routers for inline NAT and inline IPsec
services. ACX1100 AC-powered router supports only source NAT for IPv4
packets. Static and dynamic NAT types are currently not supported. Service
chaining (GRE, NAT, and IPSec) on ACX1100-AC and ACX500 routers is not
supported.
A license is required for enabling inline services on ACX500 routers.
NOTE: ACX5048 and ACX5096 routers do not support NAT configurations.
Source NAT is the translation of the source IP address of a packet leaving the router.
Source NAT is used to allow hosts with private IP addresses to access a public network.
Source NAT allows connections to be initiated only for outgoing network connections—for
example, from a private network to the Internet. Source NAT is commonly used to:
Translate a single IP address to another address (for example, to provide a single
device in a private network with access to the Internet).
Translate a contiguous block of addresses to another block of addresses of the same
size.
Translate a contiguous block of addresses to another block of addresses of smaller
size.
Translate a contiguous block of addresses to a single IP address or a smaller block of
addresses using port translation.
Translate a contiguous block of addresses to the address of the egress interface.
Network Address Port Translation Overview on page 1001
Enabling Inline Services Interface on ACX Series on page 1008
Understanding Service Sets on page 1028
Service Filters in ACX Series on page 1035
Guidelines for Applying Service Filters on page 1036
Service Filter Match Conditions for IPv4 Traffic on page 1038
Service Filter Actions on page 1039
Network Address Translation Address Overload in ACX Series on page 1001
CoS for NAT Services on ACX Series Universal Access Routers on page 887
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