Cradlepoint IBR350, Руководство пользователя

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User Manual / IBR350
5/6/16
NETWORK PREFIX TRANSLATION
Network Prefix Translation is used in IPv6 networks to translate one IPv6 prefix to another. IPv6 prefix
translation is an experimental specification ( RFC 6296) trying to achieve address independence similar to NAT
in IPv4. Unlike NAT, however, NPT is stateless and preserves the IPv6 principle that each device has a routable
public address. But it still breaks any protocol embedding IPv6 addresses (e.g. IPsec) and is generally not
recommended for use by the IETF. NPT can help to keep internal network ranges consistent across various IPv6
providers, but it cannot be used effectively in all situations.
The primary purpose for Cradlepoint’s NPT implementation is for failover/failback and load balancing setups.
LAN clients can potentially retain the original IPv6 lease information and may experience a more seamless
transition when WAN connectivity changes than if not utilizing NPT.
Mode :
• None – (Default) No translation is performed
• First – Use the first IPv6 prefix found
• Static – Always use a static IPv6 translation (input the prefix here)
Transitioning from short prefix to a longer prefix (such as from /48 to /64) is not without problems, as some of
the LANs may lose IPv6 connectivity.
REMOTE ACCESS RESTRICTION
Add any IPv4 addresses that need access to remote administration to this list. Clicking Add will allow the
addition of IP address and netmask pairs to the administration filter. Edit will allow you to change settings for
the selected address. Remove will remove a selected entry.
A port forwarding rule allows traffic from
the Internet to reach a computer on the
inside of your network. For example, a port
forwarding rule might be used to run a Web
server.
NOTE: Exercise caution when adding new
rules as they impact the security of your
network.
Click
Add to create a new port forwarding rule, or select an existing rule and click Edit .
Add/Edit Port Forwarding Rule
• Name : Name your rule.
• Enabled: Toggle whether your rule is enabled. Selected by default.
• Use Port Range : Changes the selection options to allow you to input a range of ports (if desired).
• Internet Port(s) : The port number(s) as you want it defined on the Internet. Typically these will be the
same as the local port numbers, but they do not have to be. These numbers will be mapped to the local
port numbers.
• Local Computer : Select the IP address of an attached device from the dropdown menu, or manually input
the IP address of a device.
PORT FORWARD