Configuration de Cisco IOS NAT pour deux connexions ISP avec OER
Ce document décrit la configuration d'un routeur Cisco IOS pour connecter un réseau à Internet avec la traduction d'adresses de réseau (NAT) via deux
Configuration de la traduction dadresses réseau et de la traduction
NAT fonctionne sur un routeur Cisco qui connecte deux réseaux ensemble et traduit les adresses privées (locale interne) dans le réseau interne aux adresses
Configuration du NAT Statique sur routeur Cisco
La fonctionnalité NAT permet de translater une adresse IP local en adresse IP publique. Idum. 14 avril 2015 -- N.Salmon -- article_278.pdf. Idum > Réseau >
EXEMPLE de CONFIGURATION du NAT sur ROUTEUR CISCO
EXEMPLE de CONFIGURATION du NAT sur ROUTEUR CISCO. Configuration du NAT. On peut : Routeur(config)# ip nat inside source static 192.168.0.1 200.100.40.1.
Configuration dun routeur à deux interfaces sans NAT à laide du
Cet exemple de configuration fonctionne pour un très petit bureau qui se configurer un routeur à deux interfaces avec NAT à l'aide d'un pare-feu Cisco ...
Exemple de configuration IPSec entre deux routeurs IOS avec
Ce document explique comment configurer le routeur Cisco IOS dans un VPN Choisissez le Configure > NAT > Edit NAT Configuration et cliquez sur les ...
Configuration de routeur de base à laide de SDM - Cisco
Cela inclut la configuration de l'adresse IP du routage par défaut
Configuration simultanée de NAT en mode statique et dynamique
Dans certaines situations vous aurez sûrement à configurer les commandes de traduction des adresses réseaux (NAT) statique et dynamique sur un routeur Cisco.
TP 7 : Configuration des fonctions NAT et PAT
10 oct. 2010 Page 2/8. Router(config)#ip nat inside source list 1 pool public-access. Configuration de la translation d'adresse statique NAT.
Configuration dun routeur à deux interfaces avec un pare-feu NAT
Référez-vous à Routeur à trois interfaces sans configuration de pare-feu Cisco IOS NAT afin de configurer un routeur à trois interfaces sans NAT à l'aide du
Configure Network Address Translation - Cisco
Cisco 850 Series and Cisco 870 Series Access Routers Software Configuration Guide OL-5332-01 Chapter 1 Basic Router Configuration Configuring Basic Parameters Configure Fast Ethernet LAN Interfaces The Fast Ethernet LAN interfaces on your router are automatically configured as part of the default
Cisco Router Configuration Handbook
ii Cisco Router Configuration Handbook Cisco Router Configuration Handbook Second Edition Dave Hucaby Steve McQuerry Andrew Whitaker Copyright © 2010 Cisco Systems Inc Published by: Cisco Press 800 East 96th Street Indianapolis IN 46240 USA All rights reserved No part of this book may be reproduced or transmitted in any form or by
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When configuring Dynamic NAT the inside and outside interfaces must first be identified: Router(config)#int e0/0 Router(config-if)#ip nat inside Router(config)#int s0/0 Router(config-if)#ip nat outside Next a pool of global addresses must be specified
How do I configure Nat on a Cisco router?
1. Allow Internal Users to Access the Internet 2. Allow the Internet to Access Internal Devices 3. Redirect TCP Traffic to Another TCP Port or Address 4. Use NAT For a Network Transition 5. Use NAT for Networks that Overlap This document describes how to configure the Network Address Translation (NAT) on a Cisco router.
How to configure fa0/0 as Nat inside interface on R1?
First, we have to assign Fa0/0 as NAT inside interface and Fa0/1 as NAT outside interface on R1. This would tell the router that interesting traffic entering or exiting these two interfaces will be subject to address translation. Enter configuration commands, one per line. End with CNTL/Z.
How do I see Nat translations in Cisco IOS?
There are a couple of very useful Cisco IOS commands that can be used to do just that. Command show ip nat statistics displays the number of static and dynamic NAT translations, inside and outside interfaces, and the number of hits and misses. Command show ip nat translations displays the IP addresses for NAT translations.
What is Network Address Translation (NAT)?
Network Address Translation (NAT). NAT allows a host configured with a private address to be stamped with a public address, thus allowing that host to communicate across the Internet. It is also possible to translate multiple privately-addressed hosts to a single public address, which conserves the public address space.
track timer interface 5!!track 123 rtr 1 reachability delay down 15 up 10!track 345 rtr 2 reachability delay down 15 up 10!!---Configure timers on route tracking class-map typeinspect match-any priv-pub-traffic match protocol ftpmatch protocol tcp match protocol udp match protocolicmp ! policy-map type inspect priv-pub-policy classtype inspect priv-pub-traffic inspect class class-default ! zone security public zone security privatezone-pair security priv-pub source private destinationpublic service-policy type inspect priv-pub-policy ! !interface FastEthernet0 ip address dhcp ip dhcp clientroute track 345 ip nat outside ip virtual-reassembly zone security public!!---Use "ip dhcp client route track [number]" !--- tomonitor route on DHCP interfaces !--- Define ISP-facinginterfaces with "ip nat outside" interface FastEthernet1no ip address pppoe enable no cdp enable ! interfaceFastEthernet2 no cdp enable ! interface FastEthernet3 nocdp enable ! interface FastEthernet4 no cdp enable !interface FastEthernet5 no cdp enable ! interfaceFastEthernet6 no cdp enable ! interface FastEthernet7 nocdp enable ! interface FastEthernet8 no cdp enable !interface FastEthernet9 no cdp enable ! ! interfaceVlan1 description LAN Interface ip address 192.168.108.1255.255.255.0 ip nat inside ip virtual-reassembly ip tcpadjust-mss 1452 zone security private !--- Define LAN-facing interfaces with "ip nat inside" ! ! InterfaceDialer 0 description PPPoX dialer ip address negotiatedip nat outside ip virtual-reassembly ip tcp adjust-msszone security public !---Define ISP-facing interfaceswith "ip nat outside" ! ip route 0.0.0.0 0.0.0.0 dialer0 track 123 ! ! ip nat inside source route-map fixed-natinterface Dialer0 overload ip nat inside source route-map dhcp-nat interface FastEthernet0 overload !---Configure NAT overload (PAT) to use route-maps ! ! ipsla 1 icmp-echo 172.16.108.1 source-interface Dialer0timeout 1000 threshold 40 frequency 3 !---Configure anOER tracking entry to monitor the !---first ISPconnection ! ! ! ip sla 2 icmp-echo 172.16.106.1 source-interface FastEthernet0 timeout 1000 threshold 40frequency 3 !--- Configure a second OER tracking entryto monitor !---the second ISP connection ! ! ! ip slaschedule 1 life forever start-time now ip sla schedule 2life forever start-time now !---Set the SLA schedule andduration ! ! ! access-list 110 permit ip 192.168.108.00.0.0.255 any !--- Define ACLs for traffic that will be!--- NATed to the ISP connections ! ! ! route-map fixed-nat permit 10 match ip address 110 match interfaceDialer0 ! route-map dhcp-nat permit 10 match ip address110 match interface FastEthernet0 !--- Route-mapsassociate NAT ACLs with NAT !--- outside on the ISP-
facing interfacesinterface FastEthernet0 description Internet Intf ip dhcp client route track 123 ip address dhcp ip nat outside ip virtual-reassembly speed 100 full-duplex no cdp enable
Router#
show ip nat tra Pro Inside global Inside local Outside local Outside global tcp 172.16.108.44:54486 192.168.108.3:54486 172.16.104.10:22 172.16.104.10:22 tcp 172.16.106.42:49620 192.168.108.3:49620 172.16.102.11:80 172.16.102.11:80 tcp 172.16.108.44:1623 192.168.108.4:1623 172.16.102.11:445 172.16.102.11:445Router#
lRouter#
show ip route Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2 i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2 ia - IS-IS inter area, * - candidate default, U - per-user static route o - ODR, P - periodic downloaded static route Gateway of last resort is 172.16.108.1 to network 0.0.0.0 C 192.168.108.0/24 is directly connected, Vlan1172.16.0.0/24 is subnetted, 2 subnets
C 172.16.108.0 is directly connected, FastEthernet4 C 172.16.106.0 is directly connected, Vlan106S* 0.0.0.0/0 [1/0] via 172.16.108.1
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