Lab 1.1.5 Verifying NAT and PAT Configuration
Configure a router for Network Address Translation (NAT) and Port Address Translation (PAT). • Test the configuration and verify NAT/PAT statistics.
Configure Port Address Translation (PAT) on RV320 and RV325
The objective of this document is to show you how to configure port address translation on the RV32x Series VPN Routers.
PPTP Port Address Translation
layer gateway (ALG) for Port Address Translation (PAT) configuration. How to Configure PPTP Port Address Translation on page 2.
User Defined Source Port Ranges for PAT - Cisco
Even port parity for SIP H.323
Lab – Configuring Port Address Translation (PAT)
This document is Cisco Public. Page 1 of 6. Lab – Configuring Port Address Translation (PAT). Topology. Addressing Table. Device. Interface. IP Address.
PPTP Port Address Translation
The PPTP ALG is enabled by default when Network Address Translation (NAT) is configured. This module provides information about how to configure the PPTP ALG
Lab 1.1.6 Troubleshooting NAT and PAT
Configure a router for Network Address Translation (NAT) and Port Address problems occur during this configuration refer to Lab 1.1.4a Configuring NAT.
IP Addressing: NAT Configuration Guide Cisco IOS XE 17
Configuring Dynamic Translation of Inside Source Addresses 16. Configuring the Same Global Address for Static NAT and PAT 18.
Provisioning NAT/PAT Support
This chapter describes the steps required to configure the Hosted UCS platform when a Cisco NAT/PAT router or firewall connects the IP phones and the VOSS
Configuring PPTP Through PAT to a Microsoft PPTP Server
19 Oct 2006 For more information refer to the NAT ? Support for PPTP in an Overload (Port Address Translation). Configuration section in the Cisco IOS ...
Introduction
This document provides examples of basic Network Address Translation (NAT) and Port Address Translation (PAT) configurations on the Cisco Secure Adaptive Security Appliance (ASA) Firewall. This document also provides simplified network diagrams. Consult the ASA documentation for your ASA software version for more detailed information. This document...
Prerequisites
Requirements
Configure - Multiple Nat Statements with Manual and Auto Nat
Network Diagram
Configure - Multiple Global Pools
Network Diagram
Configure - Mix Nat and Pat Statements
Network Diagram
Configure - Multiple Nat Statements with Manual Statements
Network Diagram
Configure - Use Policy Nat
Network Diagram
What is dynamic Pat on Cisco ASA?
... This document provides a sample configuration for dynamic PAT on a Cisco Adaptive Security Appliance (ASA) that runs software version 8.3 (1). Dynamic PAT translates multiple real addresses to a single mapped IP address by translating the real source address and source port to the mapped address and unique mapped port.
How do I Test PAT configuration?
Testing PAT Configuration In this lab we configured PAT on R1for 10.0.0.10 and 10.0.0.20 and static NAT on R2 for 192.168.1.10. Device Inside Local IP Address Inside Global IP Address Laptop0 10.0.0.10 50.0.0.1 Laptop1 10.0.0.20 50.0.0.2 Server 192.168.1.10 200.0.0.10 To test this setup click Laptop0and Desktopand click Command Prompt.
How do I configure Pat/Nat correctly the first time?
To configure PAT/NAT correctly the first time, you need to understand the Cisco NAT terminology and how your IP networks/addresses map to each of the entities listed below: Inside Local—This is the local IP address of a private host on your network (e.g., a workstation's IP address).
How many local addresses does Cisco IOS Pat support?
This prevents end stations from seeing connection requests with source ports apparently corresponding to the Telnet, HTTP, or FTP daemon, for example. As a result, Cisco IOS PAT supports about 4000 local addresses that can be mapped to the same global address.
Configuring PPTP Through PAT to a Microsoft
PPTP Server
Document ID: 12483
Contents
Introduction
Prerequisites
Requirements
Components Used
Conventions
Configure
Network Diagram
Configurations
Configure the MS PPTP Server
Verify
Troubleshoot
Troubleshooting Resources
Related Information
Introduction
Microsoft (MS) Point-to-Point Tunneling Protocol (PPTP) is used to enable remote users to connect back to
their corporate network in a secured manner across the public Internet. You can allocate a single IP address to
a remote location to conserve your public IP addresses. Then, you can allow multiple users to establish PPTP
connections simultaneously to the same or to different locations. PPTP was added in Cisco IOS® Software
Release 12.1(4)T.
For more information, refer to the NAT - Support for PPTP in an Overload (Port Address Translation) Configuration section in the Cisco IOS Software 12.1 T Early Deployment Release Series.Prerequisites
Requirements
There are no specific requirements for this document.Components Used
The information in this document is based on these software and hardware versions: Cisco 3600 Routers that run Cisco IOS Software Releases 12.1.5(9)T and 12.2.3· All Windows Operating System platforms with PPTP native clients built-in· MS Windows 2000 Advanced Server with a built-in PPTP server·The information presented in this document was created from devices in a specific lab environment. All of the
devices used in this document started with a cleared (default) configuration. If you are working in a live
network, ensure that you understand the potential impact of any command before using it.Conventions
Refer to the Cisco Technical Tips Conventions for more information on document conventions.Configure
In this section, you are presented with the information to configure the features described in this document.
Note: Use the Command Lookup Tool (registered customers only) to find more information on the commands used in this document.Network Diagram
This document uses this network setup:
Configurations
This document uses these configurations:
Router Light·
IP NAT Translation Table·
Router House·
IP NAT Translation Table·
Router Light
Current configuration : 1136 bytes
version 12.2 service timestamps debug upti service timestamps log uptime no service password-encryption hostname light boot system tftp c3660-jk9o3s-mz.122-3.bin 255.255.255.255 ip subnet-zero no ip domain-lookup ip audit notify log ip audit po max-events 100 ip ssh time-out 120 ip ssh authentication-retries 3 call rsvp-sync cns event-service server fax interface-type modem mta receive maximum-recipients 0 controller E1 2/0 interface FastEthernet0/0 ip address 10.64.10.13 255.255.255.224 !--- Defines the interface as external for NAT. ip nat outside duplex auto speed auto interface FastEthernet0/1 ip address 192.168.200.1 255.255.255.0 !--- Defines the interface as internal for NAT. ip nat inside duplex auto speed auto interface Serial1/0 no ip address shutdown no fair-queue interface Serial1/1 no ip address shutdown interface Serial1/2 no ip address shutdown interface Serial1/3 no ip address shutdown !--- Indicates that any packets received on the inside interface permitted !--- by access list 101 share one public IP address (the address on Fa0/0). ip nat inside source list 101 interface FastEthernet0/0 overload ip classless ip route 0.0.0.0 0.0.0.0 10.64.10.1 no ip http server access-list 101 permit ip any any dial-peer cor custom line con 0 line aux 0 line vty 0 4 login endIP NAT Translation Table
light# show ip nat translations Pro Inside global Inside local Outside local Outside global gre 10.64.10.13:50150 192.168.200.253:50150 10.64.10.21:50150 10.64.10.21:50150 gre 10.64.10.13:50151 192.168.200.254:50151 10.64.10.21:50151 10.64.10.21:50151 gre 10.64.10.13:0 192.168.200.254:0 10.64.10.21:0 10.64.10.21:0 gre 10.64.10.13:32768 192.168.200.253:32768 10.64.10.21:32768 10.64.10.21:32768 tcp 10.64.10.13:2643 192.168.200.253:2643 10.64.10.21:1723 10.64.10.21:1723 tcp 10.64.10.13:3546 192.168.200.254:3546 10.64.10.21:1723 10.64.10.21:1723Router House
Building configuration...
Current configuration : 2281 bytes
version 12.2 service timestamps debug uptime service timestamps log uptime no service password-encryption hostname house enable password cisco ip subnet-zero fax interface-type modem mta receive maximum-recipients 0 interface FastEthernet0/0 ip address 10.64.10.21 255.255.255.224 !--- Defines the interface as external for NAT. ip nat outside duplex auto speed auto interface FastEthernet0/1 ip address 192.168.50.1 255.255.255.0 !--- Defines the interface as internal for NAT. ip nat inside duplex auto speed auto interface FastEthernet4/0 no ip address shutdown duplex auto speed auto !--- Indicates that any packets received on the inside interface permitted by !--- access list 101 share one public IP address (the address on Fa0/0). ip nat inside source list 101 interface FastEthernet0/0 overload !--- Static port translation for the Microsoft PPTP server on TCP port 1723 !--- share one public IP address (the address on Fa0/0). ip nat inside source static tcp 192.168.50.2 1723 interface FastEthernet0/0 1723 ip classless ip route 0.0.0.0 0.0.0.0 10.64.10.1 ip http server ip pim bidir-enable access-list 101 permit ip any any snmp-server manager call rsvp-sync mgcp profile default dial-peer cor custom line con 0 line aux 0 line vty 0 4 password cisco login endIP NAT Translation Table
house# show ip nat translations Pro Inside global Inside local Outside local Outside global gre 10.64.10.21:50150 192.168.50.2:50150 10.64.10.13:50150 10.64.10.13:50150 gre 10.64.10.21:50151 192.168.50.2:50151 10.64.10.13:50151 10.64.10.13:50151 gre 10.64.10.21:0 192.168.50.2:0 10.64.10.13:0 10.64.10.13:0 gre 10.64.10.21:32768 192.168.50.2:32768 10.64.10.13:32768 10.64.10.13:32768 tcp 10.64.10.21:1723 192.168.50.2:1723 10.64.10.13:2643 10.64.10.13:2643 tcp 10.64.10.21:1723 192.168.50.2:1723 --- --- tcp 10.64.10.21:80 192.168.50.2:80 --- --- tcp 10.64.10.21:1723 192.168.50.2:1723 10.64.10.13:3546 10.64.10.13:3546Configure the MS PPTP Server
Complete these steps in order to configure the MS PPTP Server: Go toRouting and Remote Access
and chooseConfigure and Enable Routing and Remote
Access
.1. In the Routing and Remote Access Server Setup Wizard, chooseVirtual private network (VPN)
server .2. Define the outside and inside network IP addresses for the server network interface card (NIC).3.Assign an IP pool to the remote PPTP clients.4.
You can use the MS RADIUS authentication server or you can use local authentication.5. Create the local user database for local authentication.6. Two PPTP clients behind the Port Address Translation (PAT) router are connected to the MS PPTP server.7.Verify
Use this section to confirm that your configuration works properly. The Output Interpreter Tool (registered customers only) (OIT) supports certain show commands. Use the OIT to view an analysis of show command output. show ip nat translations24Shows the contents of the translation table.·
Troubleshoot
This section provides information you can use to troubleshoot your configuration.Troubleshooting Resources
Microsoft"s Windows 2000 Configuration of the Remote Access Server as a VPN Server ·Related Information
RFC 2637: Point-to-Point Tunneling Protocol (PPTP) · Technical Support & Documentation - Cisco Systems·Contacts & Feedback | Help | Site Map
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Updated: Oct 19, 2006Document ID: 12483
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