Configuring NAT on a Cisco Router rev1
your router: Router#debug ip nat To turn off debugging, issue the following command: Router#undebug all You can also use sho ip nat trans and show ip nat stat to view your NAT configuration For more information on NAT, visit www cisco com and search on “NAT” or “network address translation” Also, read RFC 3022 NAT training is included in
IPsec NAT Transparency - Cisco
Router>enable Step 1 Configuration Examples for IPsec and NAT NAT Keepalives Configuration Example IPsec Data Plane Configuration Guide, Cisco IOS Release 15M&T 9
Cisco - Configuring Static and Dynamic NAT Simultaneously
command(s), and they remain in the translation table until you delete the static NAT command(s) The following network diagram is an example: These commands are configured on the NAT router shown above: NAT Router version 12 3 ip nat pool test 172 16 131 2 172 16 131 10 netmask 255 255 255 0−−− Refer to ip nat pool for more details on
Configuration de routeur élémentaire avec Cisco Configuration
Configuration NAT Configuration NAT dynamique Suivez les étapes ci-dessous pour configurer la traduction d’adresses réseau (NAT) dynamique d’un routeur Cisco : Suivez le chemin Configure > Router > NAT > Basic NAT et cliquez sur Launch the selected task (lancer la tâche sélectionnée) afin de configurer la traduction d’adresses réseau de
NAT Virtual Interface - Cisco
configuration mode Step 4 ip nat enable Example: Router(config-if)# ip nat enable Configures an interface connecting VPNs and the Internet for NAT translation Step 5 exit Example: Router(config-if)# exit Returns to global configuration mode Step 6 ip nat source static local-ip global-ip vrf name Example: Router(config)# ip nat source static
Basic Configuration of Cisco 2600 Router - Technical Blog
10 Basic Configuration of Cisco 2600 Router So we can see that the server cannot ping the last firewall, but we saw previously that the Cisco router can This is why we need to set up NAT Lets go back to the interface configs for the two interfaces we are using: This takes a bit of explaining
Lab Configuring Dynamic and Static NAT - ut
Network Address Translation (NAT) is the process where a network device, such as a Cisco router, assigns a public address to host devices inside a private network The main reason to use NAT is to reduce the number of public IP addresses that an organization uses because the number of available IPv4 public addresses is limited
Network Address Translation - Router Alley
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 Inside hosts will dynamically choose the next available address in this pool, when communicating outside the local network: Router(config)# ip nat pool POOLNAME 158 80 1 1 158 80 1 50 netmask 255 255 255 0
Using NAT with PIX/ASA Devices - Router Alley
Static NAT – performs a static one-to-one translation between two addresses, or between a port on one address to a port on another address Static NAT is most often used to assign a public address to a device behind a NAT-enabled firewall/router Dynamic NAT – utilizes a pool of global addresses to dynamically translate
[PDF] phénotype rhésus ccdee
[PDF] nat statique et nat dynamique pdf
[PDF] groupe sanguin a2 positif
[PDF] phenotype erythrocytaire rh5 positif
[PDF] nat statique et nat dynamique
[PDF] groupe sanguin a1 rh+
[PDF] قاموس المصطلحات الادارية عر
[PDF] trapèze rectangle 3d
[PDF] parallélépipède triangle volume
[PDF] parallélépipède trapèze
[PDF] nom du triangle en 3d
[PDF] rectangle 3d nom
[PDF] rectangle 3d papier
[PDF] groupe verbal cm2
1 Basic Configuration of Cisco 2600 Router
Basic Configuration Cisco 2600 Router
I decided to incorporate the Cisco 2600 into my previously designed network. This would give me two seperate broadcast domains for future
additions to the network, as well as a NAT point to prevent interfering with other machines on the school network due to IP address conflicts. I
had already configured a Server 2008 box with AD DS and NPS, as well as a Firebox X Edge firewall. Thus the topology would look like this:
2 Basic Configuration of Cisco 2600 Router
The first step is to clear out the configuration of the Cisco 2600. I used a Serial connection to the console port of the 2600 with putty:
3 Basic Configuration of Cisco 2600 Router
Typing the following commands will reset the cisco to its default settings.The router will then restart with the default settings. I recommend unplugging all networking cables at this point until you are done with the
basic configuration.You'll see information about the router's built in hardware, such as interfaces and memory. Eventually you'll see this:
4 Basic Configuration of Cisco 2600 Router
When you see this, you are ready to begin:
The first step is to enter Privileged EXEC mode, essentially the administrative mode:Using the exit or end command will go back to the previous configuration prompt, when you exit configuration mode, it writes the changes:
I set the clock, which is important for logging functions and other things:5 Basic Configuration of Cisco 2600 Router
Now for the fun stuff: Configuring and enabling the interfaces:As you can see, all interfaces are down and they are currently disconnected physically as well. You need these names to configure the interfaces
though. Enter config mode: Lets also configure the default gateway used by the router: And the default name server, which would likely be an internal DNS but google for this example:6 Basic Configuration of Cisco 2600 Router
I began to notice these following errors:
We can fix this problem by using this command from the externals interface prompt:7 Basic Configuration of Cisco 2600 Router
Lets confirm our settings. Use the show config
command from the EXEC prompt. Please note that I added this after completing the experiment, and so some info should not be there, ignore the settings I have not highlighted specifically:8 Basic Configuration of Cisco 2600 Router
Now that both interfaces are up and the gateway and DNS are configured, I connected the cat5 cables to the interfaces. I pinged the internal
firewall: 10.16.70.2, and the external firewall: 172.16.0.1.9 Basic Configuration of Cisco 2600 Router
Now we know we have connectivity. Lets test from the server:10 Basic Configuration of Cisco 2600 Router
So we can see that the server cannot ping the last firewall, but we saw previously that the Cisco router can. This is why we need to set up NAT.
Lets go back to the interface configs for the two interfaces we are using:This takes a bit of explaining. NAT allows us to automatically translate IP addresses based on certain criteria, which could be specific ports,
addresses, etc. I chose a simple static NAT, which in this case will simply route all traffic recieved internally to the external interface using the
external IP. The IP address I used is the external of the firewall, which means all traffic coming from the firewall is routed out of the external
interface of the Cisco as shown.This NAT works for this simple experiment, but would require a more complex configuration in most real world deployments. There is a catch to
this setup I will show you soon. First, lets verify all of our configuration settings with the show ip NAT translation command:11 Basic Configuration of Cisco 2600 Router
It is configured properly, so lets test again with our server by pinging the external firewall:Lets confirm we now have web access:
And for the catch, and why a more advanced configuration would be necessary outside of my test network:
The Cisco can no longer ping the firewall, because the return pings are routed out of the internal interface, however this is acceptable for this
test network. As I expand I may change this to a dynamic NAT that only NATs web traffic.quotesdbs_dbs16.pdfusesText_22