NAT on SAA

Similar Questions

• NAT on SAA with VPN

  Hello

  I need a VPN setup connection a L2L but don't know how.

  I have a site ASA with network 10.14.14.0/24, and on the other site also an ASA with the 10.14.16.0/24 network.

  I need NAT all traffic from 10.14.14.0/24 and will 10.14.16.0/24 to 10.19.1.15/32.

  Is this possible?

  If yes where can I find examples?

  Thank you and best regards,

  Hello

  It is possible.

  example of Configuration using ASDM:

  -------------------------

  http://www.Cisco.com/en/us/products/ps6120/products_getting_started_guide_chapter09186a0080856cf8.html

  Example of configuration using IOS commands:

  ---------------------------------------

  http://www.Cisco.com/en/us/products/HW/vpndevc/ps2030/products_configuration_example09186a00805734ae.shtml

  -Jaffer

• Routing/NAT does not not on SAA with anyconnect

  Hi sorry for the post but they seem to hit a snag that I can be completely absent.
  I'll post the config here, but some names are being changed and intellectual property

  I have just sentp Anyconnect on the SAA for VPN

  The problem I have is the following-

  I can connect through anyconnect using a certificate SSL of the SAA,
  I authenticate via the domain contoller fine.
  I get an IP address of 192.168.100.1 pool, bridge always seems to be 192.168.100.2
  So I can't access anything on the network, I want to go 170.62.0.0/16

  I have attached the Config file

  If anyone can tell me what I can be out there or have bad.

  Hello

  In your firewall you route 170.62.0.0/16 through 170.62.4.11, gateway, in this other router 170.62.4.11 could check you if you have a route back to your VPN network 192.168.100.0/24 pool, otherwise add a route back pointing towards your asa inside the ip of the interface 170.62.4.22 and then try conecting.

  Concerning

• Overlapping address space question - how to NAT inside the traffic to one address different range on SAA for comms with 3rd party VPN?

  We already have a connectivity of IPSEC VPN site to site with a 3rd party.

  They must be able to access a couple of servers on our internal network but the problem, it's the subnet these servers are hosted on clashes with the address space they already used elsewhere. Thus, they asked if we can put in place a new subnet and have our firewall (running v7.2) ASA NAT the traffic to and from our servers ' real' internal addresses.

  for example

  • 3rd party 10.10.10.0/24 subnet
  • Our subnet 10.20.20.0/24 (but this clashes with the 3rd part of the address elsewhwere space)
  • Our 'real' internal server addresses are 10.20.20.1 and 10.20.20.2

  How do we setup NAT on our ASA translating internal addresses 'real' of these servers for some other addresses that don't clash?

  that is that the 3rd party is concerned, they would simply have to communicate with this 'new' subnet, say, 192.168.20.0/24 and our ASA firewall NAT traffic accordingly to allow some comms unfold?

  (And it should affect only comms on these servers for the 3rd party - NOT for one of our other multiple VPN connections! "And should not affect the other comms from the servers themselves!).

  That's what I've tried so far, for one of the servers, without success:

  On ASA:

  !

  access-list 1 permit line 3rdpartysite extended ip host 192.168.20.1 10.10.10.0 255.255.255.0
  !
  access-list SERVER-NAT line 1 permit extended ip host 10.20.20.1 10.10.10.0 255.255.255.0
  !
  static (inside, outside) 192.168.20.1 public - access NAT SERVER list

  "sh xlate" indicates:

  192.168.20.1 global local 10.20.20.1

  Can someone help with the necessary NAT configurations on the ASA?

  Thank you!

  'Clear xlate' after you have configured NAT statements?

  When you try to ping from the 10.20.20.1, get it to the ASA? You have an ACL on this interface that would block the ping? Also, can you run capture packets on the ASA to see if the ASA receives even the traffic?

  What is the subnet mask of the 10.20.20.1 host? I guess it's 255.255.255.0?

  You don't need something specific on the ASA with regard to the delivery of the 192.168.20.1.

• ASA firewall and Nat

  Hi to everyone.

  I have a firewall asa with the external interface pointing to a router on the subnet 192.168.1.0

  And the inside of the 192.168.0.0 subnet interface

  I want to know if is required to configure the Nat object between the two interface or is not a prerequisite to have connectivity to the Internet behind the asa in the LAN segment

  Thank you all!

  Hello

  It is not necessary to configure the NAT on the SAA, providing your gateway router knows how to route the packets intended for your home network and routers NAT ACL can be configured to include your home subnet.

  If you have a router in bridge base that can not configure static routes or dynamic routing and cannot have its edited NAT policy, then you need to configure NAT on the SAA.

  see you soon,

  SEB.

• Question for NAT exemption

  I have an ASA 5545 X 9.6 1 code running, and I had a question regarding NAT exemptions for Anyconnect VPN client.

  When I initially configured the Anyconnect VPN, I did the usual steps: created a local customer pool, authentication, customer software image and exemptions of NAT using the new syntax. Example of

  NAT (inside, outside) static source PROD-PROD-NETWORKS static destination VPN CLIENT VPN CLIENT POOL no-proxy-arp-route search

  I also have an ACL of VPN clients.

  Then I added a network in the ACL, added a route on the network of the SAA, but I forgot to put this network in the group that the above (PROD-NETWORKS). In other words, I forgot to make an exemption nat for this new network.

  But customers were still able to connect to the new network without derogation.

  If something has changed? Is - it is no longer necessary? How is this even work?

  Hi Colin,

  Well usually NAT exemption is necessary 9.X code introduced the volatile PAT PAT and multisession feature, the feature of p. - session is enabled by default and is allowed for better scalability, this feature also is not a timeout which means that you can have more & than multisession (translations of PAT in the course of a single IP address) , this now to return to the initial request, let´s, remember that a dynamic NAT is not bidirectional, so you're from the VPN client to the IP address of the client, and it is allowed. This is (is there an object configured for the internet that must be put in correspondence of NAT?), what line # is the exemption of NAT in? What happens if you delete the exemption of NAT, or place as line 1?

  Because you are specifying NAT exemption is still being offset, it seems somehow just, but if you see it in the prospect that the dynamic NAT is one-way for internal hosts, and the current flow rate seems to be: VPN user accesses the SAA and this is allowed because it is a VPN traffic and "Sysopt connection permit-vpn" allows traffic and while he has not matched NAT (right here should the free equivalent of) NAT, if it isn't, it is does not match any other NAT for the host 'outside') then just traffic continues to go to the internal host (path Session Management), then the answer must match this stream via the (Fast Path flow), obviously the package is the encapsulated and encrypted and vice versa as well.

  Keep me posted!

  Please note and mark it as correct the helpful post!

  David Castro,

• Cisco ASA 5505 without nat

  Hi all!

  Can I disable nat at all. I mean like this comand:

  no nat (inside) 1 0.0.0.0 0.0.0.0

  I want to use my camera as a router.

  It work?

  (I've done of access lists and bind to interfaces.)

  Yes you can and you should also disable 'nat-control' with the command:

  no nat control

  For the ASA behaves like a router, please also configure the interfaces of the SAA in the same level of security. If they have different security level, you need to configure static NAT 1:1 to itself not nat traffic.

  Then also set:

  security-even allowed inter-interface

• Clarification of the NAT rules

  Hi all

  I understand the notion of NAT and why it is used.  However, I am a little confused given the following command:

  object network obj-internal

  nat (inside,outside) dynamic interface

  Please correct me if I'm wrong, but until now, I understand that this command creates a network called "obj-internal" object and creates a rule for traffic from the interface inside of the external interface.  However, I'm confused with the dynamic interface part.  Could someone please elaborate more on the meaning and usage of this part?  Any help is greatly appreciated.

  To create an object you also a definition of what is this object. You also need somethng as a host or a subnet statement.

  For this object that you want to specify how to resolve the internal IP address (inside the network) are translated when communicating with the external network. The NAT command in your example uses a dynamic conversion (unlike the static NAT which is generally used for outside - inside the traffic, or when an inside host should always get the same IP address to the outside) who always uses external IP of the SAA. So no matter what internal host communicates with the outside world, they all appear with a single IP address on the destination system.

  --
  Don't stop once you have upgraded your network! Improve the world by lending money to low-income workers:
  http://www.Kiva.org/invitedBy/karsteni

• With NAT VPN tunnels

  I have read on several posts on the topic and still think I'm missing something, I'm looking for help.

  Basically, I'm now implementing multiple VPN tunnels for external connections. We strive to keep the external "private addresses" our basic using NAT network.

  I can get the Tunnel to work without problems using the ACL SHEEP; However, this technique requires that our internal network is aware of their external addresses "private." Our goal is to enter an address on the inside that is NAT to the external address 'private' and then shipped via the VPN tunnel. Basically to hide the external address 'private' of our internal systems that they would appear as thought the connection was one of our own networks.

  The reverse is true coming from their external 'private' network. Any information of "their" private network external origin would result in our 'private' on arrival address space.

  Is this possible? I am attaching a schema, which could help.

  Hello

  Yes, this should be possible. Lets say you allocate 10.112.2.250 as the address that you use to present the external server 192.168.10.10.

  On your ASA device

  public static 10.112.2.250 (exterior, Interior) 192.168.10.10 netmask 255.255.255.255

  You will need to make sure that when the system tries to connect to 10.112.2.250 it is routed to the device of the SAA.

  HTH

  Jon

• nat ASA 5520 problem

  Hi I have a Cisco Asa 5520 and I want to vpn site-to-site by using another interface with a carrier of lan to lan, the problem is when I try to pass traffic have the syslog error to follow:

  No translation not found for udp src lan2lan:10.5.50.63/44437 dst colo: biggiesmalls groups / 897
   
  LAN to LAN service interface is called: lan2lan
  one of the internal interfaces is called: colo
  
  I think that is problem with Nat on the SAA but I need help with this.
   
  Config:
   
  !
  interface GigabitEthernet0/0
  nameif outside
  security-level 0
  eve of fw - ext 255.255.255.0 address IP XXaaaNNaa
  OSPF cost 10
  OSPF network point-to-point non-broadcast
  !
  interface GigabitEthernet0/1
  No nameif
  no level of security
  no ip address
  !
  interface GigabitEthernet0/1.50
  VLAN 50
  nameif lb
  security-level 20
  IP 10.1.50.11 255.255.255.0
  OSPF cost 10
  !
  interface GigabitEthernet0/1,501
  VLAN 501
  nameif colo
  security-level 90
  eve of fw - int 255.255.255.0 172.16.2.253 IP address
  OSPF cost 10
  !
  !
  interface GigabitEthernet1/1
  Door-Lan2Lan description
  nameif lan2lan
  security-level 0
  IP 10.100.50.1 255.255.255.248
  !
  access extensive list ip 10.1.0.0 lan2lan_cryptomap_51 allow 255.255.0.0 object-group elo
  permit access list extended ip sfnet 255.255.255.0 lan2lan_cryptomap_51 object-group elo
  pager lines 24
  Enable logging
  host colo biggiesmalls record
  No message logging 313001
  External MTU 1500
  MTU 1500 lb
  MTU 1500 Colo
  lan2lan MTU 1500
  ICMP unreachable rate-limit 1 burst-size 1
  ARP timeout 14400
  NAT-control
  Global 1 interface (external)
  interface of global (lb) 1
  Global (colo) 1 interface
  NAT (lb) 1 10.1.50.0 255.255.255.0
  NAT (colo) - access list 0 colo_nat0_outbound
  NAT (colo) 1 10.1.13.0 255.255.255.0
  NAT (colo) 1 10.1.16.0 255.255.255.0
  NAT (colo) 1 0.0.0.0 0.0.0.0
  external_access_in access to the external interface group
  Access-group lb_access_in in lb interface
  Access-group colo_access_in in interface colo
  Access-group management_access_in in management of the interface
  Access-group interface lan2lan lan2lan
  !
  Service resetoutside
  card crypto match 51 lan2lan_map address lan2lan_cryptomap_51
  lan2lan_map 51 crypto map set peer 10.100.50.2
  card crypto lan2lan_map 51 game of transformation-ESP-3DES-SHA
  crypto lan2lan_map 51 set reverse-road map
  lan2lan_map interface lan2lan crypto card
  quit smoking
  ISAKMP crypto identity hostname
  ISAKMP crypto enable lan2lan
  crypto ISAKMP policy 10
  preshared authentication
  3des encryption
  sha hash
  Group 2
  life 86400
  Crypto isakmp nat-traversal 20
  enable client-implementation to date
  IPSec-attributes tunnel-group DefaultL2LGroup
  pre-shared-key xxXnnAA
  tunnel-group 10.100.50.2 type ipsec-l2l
  tunnel-group 10.100.50.2 General-attributes
  Group Policy - by default-site2site
  No vpn-addr-assign aaa
  No dhcp vpn-addr-assign
  Telnet timeout 5
  !
   

  The VPN is OK? ("' isakmp crypto to show his" should show a MM_Active tunnel to the peer address ")

  Normally exempt us VPN site-to-site of NAT traffic. This could be your problem. If you can share your configuration, we can have a look.

  p.s. you should affect the question of the security / VPN forum.

• NAT inside Site to Site VPN

  Hi all

  How can I get NAT my internal to the range of IP addresses different before reaching destination LAN network

  Hello

  No, you no longer have need of NAT0 and actully, it is mandatory to remove it as NAT0 prevails over the other statements of NAT.

  You should translate all subnet to a single IP address in NAT rules-based help

  NAT (inside) 10-list of access VPN - NAT

  overall 10 172.16.20.1 (outside)

  access VPN - NAT ip 192.168.10.0 list allow 255.255.255.255 192.50.100.32 255.255.255.240

  The card crypto access list:

  host ip 172.16.20.1 allowed VPN access list 192.50.100.32 255.255.255.240

  To check the NAT:

  SH xlate

  To test the complete configuration use the command "packet - trace", which generates a bunch of fake with the features you want and spends the entire process internal SAA and shows you the result.

  Please rate if this helped.

  Kind regards

  Daniel

• Config of ASA 8.3 NAT pre then no. - NAT

  Hello

  I'm trying to set up a VPN S2S on a SAA V8.0.

  I want NAT 10.1.1.1 20.2.2.2 (as a result of conflict of IP address to the other side) then exempt from NAT cela on the remote VPN to the subnet of 30.3.3.3

  10.1.1.1 is based on the 'inside' interface, the cryptomap VPN is configured and applied to 'outside' interface.

  The ACL Crypto is:

  VPN line 1 permit access list extended ip 10.1.1.1 host 30.3.3.3

  (1) am not familiar with pre 8.3 config, only used 8.4 + in the past, can someone please send the config that NAT / No. - NAT will be.

  (2) in the ACL crypto you define real address (10.1.1.1) as the source or the Natt treat (20.2.2.2)?

  3) there is also an ACL on the external interface, you allow 30.3.3.3 (remote vpn) access to destination IP, the actual address (10.1.1.1) or the NATT (20.2.2.2) treat?

  Thank you!!

  It is not a double NAT.

  So 10.1.1.1 is simply translated to 20.2.2.2 when the destination IP address is 30.3.3.3.

  If this example is correct IE. your acl made reference to the real IP of 10.1.1.1 and 3.3.3.3 destination IP address.

  Then the static policy statement NAT uses 20.2.2.2 and refers to the acl.

  It is the NAT policy.

  Jon

• Cisco ASA VPN Site to Site WITH NAT inside

  Hello!

  I have 2 ASA 5505 related to IPSEC Tunnel VPN Site to Site.

  A 192.168.1.0/24 'remotely' inside the network and a local "192.168.200.0/24' inside the network (you can see the diagram)

  The local host have 192.168.200.254 as default gateway.

  I can't add static route to all army and I can't add static route to 192.168.200.254.

  NAT the VPN entering as 192.168.200.1 or a 192.168.200.x free to connect my host correcly?

  If my host sends packet to exit to the default gateway.

  Thank you for your support

  Best regards

  Marco

  The configuration must be applied on the SAA with the 192.168.200.0 subnet it is inside, there must be something like this:

  permit 192.168.1.0 ip access list VPN_NAT 255.255.255.0 192.168.200.0 255.255.255.0

  NAT (outside) X VPN_NAT outside access list

  Global (inside) X Y.Y.Y.Y (where the Y.Y.Y.Y) is the ip address

  If you have other traffic on the vpn through the tunnel that requires no nat, then you must add external nat exemption rules since these lines above obliges all traffic through the asa to have a nat statement.

  See if it works for you, else post your config nat here.

• ASA L2L VPN NAT

  We have a partner that we set up a VPN L2L with.  Their internal host IP infringes on our internal IP range.  Unfortunately, they are not offer NAT on their side.  Is it possible on the SAA to configure a NAT device for my internal hosts will say 1.1.1.1 and ASA changes the internal address of the remote end overlapping?

  If this is the scenario

  192.168.5.0 ASA1 <---> <-- internet="" --="">ASA2<-->

  ASA1 (NAT will be applied)

  ASA2 (without nat will be applied)

  You want to do something like that on ASA1

  Change your source host or network to be 192.168.7.0 when communicating with the remote network. Change the remote network to come as long as 192.168.8.0 coming to your network on the SAA.

  ACL soccer match:!-match-list ACLaccess acl_match_VPN ip 192.168.7.0 allow 255.255.255.0 192.168.5.0 255.255.255.0

  ! - NAT ACL

  vpn_nat 192.168.5.0 ip access list allow 255.255.255.0 192.168.8.0 255.255.255.0

  ! - Translations

  public static 192.168.7.0 (exterior, Interior) 192.168.5.0 netmask 255.255.255.0 0 0

  static (inside, outside) 192.168.8.0 public - access policy-nat list

  Complete the VPN configuration using acl_match_VPN as the ACL match. Your inside host will have to use the 192.168.7.0 network when you talk to the remote end.

  I hope this helps.

• NAT in the IPSec tunnel between 2 routers x IOS (877)

  Hi all

  We have a customer with 2 x 877 routers connected to the internet. These routers are configured with an IPSec tunnel (which works fine). The question is the inbound static NAT translation problems with the tunnel - port 25 is mapped to the address inside the mail server. The existing configuration works very well for incoming mail, but prevents users from access to the direct mail server (using the private IP address) on port 25.

  Here is the Config NAT:

  nat INET_POOL netmask 255.255.255.252 IP pool

  IP nat inside source map route INET_NAT pool INET_POOL overload

  IP nat inside source static tcp 10.10.0.8 25 25 expandable

  IP nat inside source static tcp 10.10.0.8 80 80 extensible

  IP nat inside source static tcp 10.10.0.8 443 443 extensible

  IP nat inside source static tcp 10.10.0.7 1433 1433 extensible

  IP nat inside source static tcp 10.10.0.7 extensible 3389 3389

  allowed INET_NAT 1 route map

  corresponds to the IP 101

  access-list 101 deny ip 10.10.0.0 0.0.0.255 192.168.1.0 0.0.0.255

  access-list 101 permit ip 10.10.0.0 0.0.0.255 any

  On the SAA, I would setup a NAT exemption, but how do I get the same thing in the IOS?

  See you soon,.

  Luke

  Take a look at this link:

  http://www.Cisco.com/en/us/docs/iOS/12_2t/12_2t4/feature/guide/ftnatrt.html

  Concerning

  Farrukh