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2-Series Feature

Crestron

NAT

when an internal node sends a packet to the external network, the NAT router
intercepts the packet and replaces all instances of the internal source IP address with
the external IP address (68.42.78.12).

When an external node responds to an internal node or initiates an acceptable
connection with an internal node, the NAT router intercepts the packet and replaces
all instances of the external destination IP address (68.42.78.12) and assigned
external destination TCP/UDP port with the internal IP address and destination
TCP/UDP port.

Sample NAT-Mode Configuration

NOTE:

The “IP Setup” section in the C2ENET-1/2 Operations & Installation Guide

(Doc. 5962) provides an example of a control system establishing Internet
communication via a DSL router. Obtain the latest version of the guide from the
Downloads | Product Manuals section of the Crestron website (www.crestron.com).

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Network Address Translator: NAT

Reference Guide – DOC. 6001

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Содержание NAT

Страница 1: ...Crestron NAT Network Address Translator Reference Guide ...

Страница 2: ...n by the Technical Documentation department at Crestron Electronics Inc 15 Volvo Drive Rockleigh NJ 07647 1 888 CRESTRON All brand names product names and trademarks are the property of their respective owners 2002 Crestron Electronics Inc ...

Страница 3: ... Features Functions of Crestron NAT 1 Crestron Implementation 2 Setup 5 Requirements 5 Hookup 5 IP Setup 6 Configuration 8 Software License Agreement 14 Return and Warranty Policies 16 Merchandise Returns Repair Service 16 CRESTRON Limited Warranty 16 Reference Guide DOC 6001 Contents i ...

Страница 4: ......

Страница 5: ...per second Crestron does not recommend use of high volume streaming output devices such as IP based codecs Feature Function Summary Built In NAT Functionality Included in 2 Series Firmware Enabled Via Dual Port Ethernet Z Bus Expansion Card C2ENET 2 Single IP Addressing One External IP Address Represents Multiple Crestron IP Device IP enabled AV Devices in Internal Network Controlled Access to Int...

Страница 6: ...e www Crestron com Crestron Implementation Network Address Translation has many forms and can work in several ways As currently implemented for the Crestron 2 series control systems NAT is a combination of the Network Address Port Translator protocol NAPT and Bi Directional NAT and solves three common problems generally experienced with growing networks shortage of globally unique IP addresses fir...

Страница 7: ... For example without the Crestron NAT the creation of an internal or sub network within an existing network would require the purchase of a separate third party router and involve major participation from an IT administrator Instead the Crestron NAT offers a built in solution that permits an IT administrator or AV installer to setup a sub network of Crestron and IP enabled AV products with firewal...

Страница 8: ...cket and replaces all instances of the external destination IP address 68 42 78 12 and assigned external destination TCP UDP port with the internal IP address and destination TCP UDP port Sample NAT Mode Configuration NOTE The IP Setup section in the C2ENET 1 2 Operations Installation Guide Doc 5962 provides an example of a control system establishing Internet communication via a DSL router Obtain...

Страница 9: ...ith RJ 45 connectors for external and internal networks RJ 45 broadband Internet connection ports for external network PC running Crestron software e g Viewport Internet Explorer 4 0 and higher or Netscape Navigator 4 0 or 4 7 Hookup Prior to making any connections verify that all hardware is powered down Refer to the diagram after this paragraph Use a network cable and connect the internal networ...

Страница 10: ...ddresses for the control system WAN address from the network administrator or network service provider Obtain the LAN side addresses or choose them yourself if no one else s equipment resides there eg 192 168 16 1 is a commonly used class C address NOTE The next three steps verify that the static IP address is not being used by another device 2 On the PC select Start Run from the Taskbar to open t...

Страница 11: ...stem IP Address window opens Pulldown from Menu Bar Set Control System IP Address Window 6 Enter the external LAN A and internal LAN B IP numbers in the New IP Address fields and the router number in the New Default Router field The subnet mask numbers New IP Mask fields are set automatically Reference Guide DOC 6001 Network Address Translator NAT 7 ...

Страница 12: ...RD pages which enable NAT Open the browser and enter the address http xxx xxx xxx xxx setup admin ssi where xxx xxx xxx xxx is the IP address of the control system NOTE This phase of NAT allows for administrative rights that can be protected by a password Administrative rights allow for the redirection of IP traffic as defined by port assignments Additional rights will be permitted in future relea...

Страница 13: ...omatically provided and is determined by the loaded firmware NOTE Unlike the Crestron Viewport the subnet mask is not set up automatically LAN IP Address Specify the IP address of the control system marked as LAN B on the Ethernet card This IP address exists only on the private side of the router Obtain the subnet mask from the IT personnel Enter the value into the appropriate field NOTE The IP ad...

Страница 14: ...ORTMAP Page NOTE The three items entered on the page above corresponds to the internal network which includes a CP2E and two Isys touchpanels as shown in the example on page 3 A process performed by a network aware device on the internal network can be initiated from the external network The NAT protects the anonymity of the internal network by remapping its known port assignments to ones that it ...

Страница 15: ...n process performed on a network aware internal device that needs to be exposed to the external network Refer to the table of well known port numbers below NOTE After the appropriate portmap fields are complete click Apply Otherwise click Cancel Well Known Port Numbers PORT NUMBER DESCRIPTION 7 Echo 20 File Transfer protocol FTP 21 File Transfer protocol FTP 23 Telnet 25 E Mail SMTP 53 Domain Name...

Страница 16: ...o the field Enter the password into the Password field and click OK Once a password is assigned the Enter Network Password window appears when trying to access the web server Enter Network Password Window NOTE If the password is forgotten the password can be reset via console commands Some of the NAT specific console commands are shown in a table on the next page For a complete listing and descrip...

Страница 17: ...NAT NATREMOTE Enable disable configuring the Network Address Translator NAT from the WAN LAN A port PASSWORD Set console and secure webpages password REMPORTMAP Remove a port map from the NAT table SHOWPORTMAP Display the portmap from the NAT table WEBPORT Specify the port for the Webserver XPUTFILE Use Xmodem to transfer file to ROM Reference Guide DOC 6001 Network Address Translator NAT 13 ...

Страница 18: ... data or instructions from or to another computer b for local campus or wide area network internet or web hosting services or c pursuant to any rental sharing or service bureau arrangement The Software is designed as a software development and customization tool As such Crestron cannot and does not guarantee any results of use of the Software or that the Software will operate error free and You ac...

Страница 19: ...y 90 days from the date of receipt and b that any hardware accompanying the Software will be subject to its own limited warranty as stated in its accompanying written material Crestron shall at its option repair or replace or refund the license fee for any Software found defective by Crestron if notified by you within the warranty period The foregoing remedy shall be your exclusive remedy for any ...

Страница 20: ...d This warranty extends to products purchased directly from CRESTRON or an authorized CRESTRON dealer Purchasers should inquire of the dealer regarding the nature and extent of the dealer s warranty if any CRESTRON shall not be liable to honor the terms of this warranty if the product has been used in any application other than that for which it was intended or if it has been subjected to misuse a...

Страница 21: ...Crestron NAT 2 Series Feature This page intentionally left blank Reference Guide DOC 6001 Network Address Translator NAT 17 ...

Страница 22: ...Crestron Electronics Inc Reference Guide DOC 6001 15 Volvo Drive Rockleigh NJ 07647 12 02 Tel 888 CRESTRON Fax 201 767 7576 Specifications subject to www crestron com change without notice ...

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