NAT 0 0 nat nat static ACLs

Anyone know what the order of nat/static... .is it nat 0 acl, nat 0, static, nat? where nat 0 acl is first and nat is the last... for example if I have an address that meets the criteria of nat 0 acl, nat 0, static, NAT... what happens?

John

Order of preference for the translation goes as follows:

(1) nat 0 access-list (free of nat)

(2) match against existing xlates

(3) static

(a) nat public static with no access-list (first match)

(b) public static pat with no access-list (first match)

(4) nat

(a) nat access-list (first match) Note: nat 0-list of access is not part of this command.

(b) nat (best match) Note: when you choose a global address of multiple pools with the same id of nat, the following order is tried

(i) if the id is 0, create an xlate identity.

(II) use the global pool for dynamic NAT

(III) use the global pool for PAT dynamic

(5) error

Tags: Cisco Security

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    VPN-RTR-01 #.

    Hello

    Configuration looks ok to me.

    yet you can cross-reference with the following link:

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    He must do exactly what you want. The old, another way to do is use "The thing", where you create a loopback interface and don't make a nat interface and use routing strategy for routing VPN traffic to one address on the same subnet as the loopback interface, but not the address of the loop. IOS then that réacheminera traffic to the real destination (in this case the remote VPN site), but since now it is not a 'ip nat inside' interface, the static nat translations does not apply and the VPN traffic will not be translated. The problem with this solution is that all loopback traffic is switched to the process, so it is a bit of a hack, but these things are sometimes necessary.

    HTH

  • searching for NAT/Firewall/static routing tips

    Hello

    I am very new to vCloud network and security. I've read the documentation, but it can be confusing for me. I am attaching a schema to help provide a context for what I'm trying to achieve. Keep in mind that the IP address has been changed for security reasons. Address ranges are not accurate but for the context.

    We have an org routed with a single VM VAPP, directly connected to the VCC-Net. It is a Linux server. We have a vShield edge device. There is no rule of firewall, NAT, static routes configured. Essentially of deployment costs. The owner of the server wants to be able to connect to a Linux repo for updates/etc.

    For testing purposes, I have disabled the vShield firewall to allow all traffic through. from the Linux server, I was able to ping both addresses assigned to the border of vShield (192.168.1.1 and 10.10.16.17) but I couldn't ping 10.10.2.140. This leads me to believe the vShield Edge does not know how to route packets between 192.168.1.0/24 and 10.10.0.0/16.

    I have read and what I'm gathering is that I have to configure NAT and firewall rules to achieve. I googled everything I can, and now I'm just confused. Can someone please give me some advice?

    VShield Edge routing feature is similar to traditional router. By default, it can discover only directly attached networks and deliver packages, in this case 192.168.1.0/24 and 10.10.16.0/16 are direct networks. So if you need reach any other private network, we need to define a static route (it is not supported / configurable in vshield edges of dynamic routing since then). For Linux VM 192.168.1.10/24 join the public network, set a NAT NAT vShield edge rules and enable the appropriate firewall rules.

  • NAT Ports inaccessible over the site to site VPN

    We have a series of 2900 SRI at HQ and several of Cisco WRVS4400N VPN routers to small branch offices. The branch offices are connected to HQ via IPSec site-to-site. Everything seems to work fine, except users in the box executive offices not access all the services on servers HQ where the port was NAT'd to the outside. For example, we organize Office services remotely via https, port 443 is NAT made appeal to the outside, but users in the branch offices cannot access this port. They receive a time-out error. I tried searching but all I can find is info on crossing IPSec NAT. thank you...

    With this config-NAT, your router ensures that the internal server has to be accessible by the public IP address. You can add a roadmap to your NAT static entry exempt of NAT VPN traffic. Which might look like the following:

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    host 10.1.0.1

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    host 10.1.0.2

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    the object server c network

    host 10.1.0.3

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    the REMOTE_SUBNET object-group network

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    Thank you

    Your configuration is correct, but I have a few comments.  Remember that NAT occurs before the delivery of your servers will be translated into 10.2.255.2 and 10.2.255.3 and then sent through the tunnel, so your encryption field is correct.

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    network of the ServerA_NAT object

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    NAT static ServerA ServerA_NAT destination (indoor, outdoor) static source REMOTE_SUBNET REMOTE_SUBNET

    This will use destination basic NAT for traffic VPN and NAT everything to a public IP address for the internet traffic.  Of course, if this is not your internet connection firewall can do abstraction.

  • Translation NAT PIX problem

    Hello everyone I have the following situation on a running 6.2.2 PIX 520

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    I'm doing the same thing try to allow hosts behind the area demilitarized the hosts behind the inside interface to icmp ping:

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    When you use "nat 0" with a network after him, it does NOT work as a static/ACL combination that normally, you need to move from a lower to a higher security security interface, as you do here. With "nat 0", traffic not from higher security first interface, THEN traffic can flow from the lower security interface. In your example, the traffic should flow inside the DMZ BEFORE traffic flows from the DMZ to the inside. The reason it works with the DMZ to outside traffic is that traffic probably sank DMZ for outside already, while traffic then flows from the outside to the DMZ.

    NAT 0 is probably something I would keep away from, could the interpretations of the causes like that. IT is IS NOT THE SAME AS STATIC/ACL PAIR., although it is similar.

    I would replace your statements "nat 0" with the following:

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    You have still a static, but you translate it into himself, effectively bypassing NAT (even though it still go through the NAT process). Traffic will then be able to move back and forth without worrying. It's easier to read and follow for me too, but that's just my opinion.

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