NAT VPN

Similar Questions

• By PAT and NAT VPN

  We have a place where you want to set up a tunnel VPN to our headquarters.

  In this place, there is a router that PAT (NAT overloading), and then a few jumps more, there is a firewall that makes the NAT.

  Is this could pose a problem for the VPN tunnel?

  Here's a "pattern" of what looks like the connection.

  Customer--> PAT - router-->--> Internet--> CVPN3005 NAT firewall

  I hope you can provide me with an answer.

  VPN tunnel will not work in your scenario. NAT second change address and the ports you want to use for the vpn tunnel. So the port 500 wil be translated to top port and will be rejected at HQ.

• 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

• Pool of dhcp NAT VPN to the LAN on router 2911

  I need nat the ips assigned by dhcp vpn to my LAN pool. My problem is that I do not know which interface to set my nat statement on since there is no interface that is in the same subnet as my dhcp pool. Any help would be appreciated.

  For remote client ipsec, you must have DVTI according to configuration described here:

  http://www.Cisco.com/en/us/docs/iOS/12_3t/12_3t14/feature/guide/gtIPSctm...

  'use ip nat inside' on the virtual model and 'ip nat outside' on the inside of the interface.

  HTH

  Averroès.

• NAT VPN tunnel and still access Internet traffic

  Hello

  Thank you in advance for any help you can provide.

  I have a server with the IP 192.168.1.9 that needs to access a subnet remote from 192.168.50.0/24, through the Internet.  However, before the server can access the remote subnet, the server IP must be NAT'ed to 10.1.0.1 because the VPN gateway remote (which is not under my control) allows access to other customers who have the same subnet address that we do on our local network.

  We have a 2801 Cisco (running c2801-advsecurityk9 - mz.124 - 15.T9.bin) set up to make the NAT.  It is the only gateway on our network.

  I have configured the Cisco 2801 with the following statements of NAT and the relevant access lists:

  access-list 106 allow host ip 192.168.1.9 192.168.50.0 0.0.0.255

  NAT extended IP access list
  refuse the host ip 192.168.1.9 192.168.50.0 0.0.0.255
  deny ip 192.168.1.0 0.0.0.255 192.168.3.0 0.0.0.255
  ip permit 192.168.1.0 0.0.0.255 any

  route allowed ISP 10 map
  corresponds to the IP NAT

  IP nat EMDVPN 10.1.0.1 pool 10.1.0.1 netmask 255.255.255.0
  IP nat inside source list 106 pool EMDVPN
  IP nat inside source map route ISP interface FastEthernet0/1 overload

  When the server (192.168.1.9) attempts to ping on the subnet of 192.168.50.0/24 devices, the VPN tunnel is established successfully.  However, after that, the server is no longer able to access the Internet because the NAT translation for 192.168.1.9 has changed since the external IP address of the router (FastEthernet0/1) at 10.1.0.1.

  The documentation I've seen on the site of Cisco says that this type of Setup allows only host subnet communication.  Internet access is not possible.  However, maybe I missed something, or one of you experts can help me.  Is it possible to configure the NAT router traffic destined to the VPN tunnel and still access the Internet by using the dynamic NAT on FastEthernet0/1?

  Once again, thank you for any help you can give.

  Alex

  Hello

  Rather than use a pool for NAT

  192.168.1.9 - 10.1.0.1 > 192.168.50.x

  ACL 102 permit ip 192.168.1.9 host 192.168.50.0 0.0.0.255

  RM-STATIC-NAT route map permit 10
  corresponds to the IP 102

  IP nat inside source static 192.168.1.9 10.1.0.1 card expandable RM-STATIC-NAT route

  ACL 101 deny host ip 192.168.1.9 192.168.50.0 0.0.0.255
  ACL 101 by ip 192.168.1.0 0.0.0.255 any
  overload of IP nat inside source list 101 interface FastEthernet0/1

  VPN access list will use the source as 10.1.0.1... *.

  Let me know if it works.

  Concerning

  M

• 8.2 policy-nat VPN port (5) ASA5510 of ASA5515 8.6 (1)

  I have this existing config (which works) on ASA5510 v8.2 (5)
  Need this port above ASA5515 v8.6 (1) running
  ASA5510 inside the net: 192.168.1.0/24
  On the remote VPN peer network: 172.16.21.192/28
  !
  InsideGlobal-2-OutsideNetwork to the list of allowed access host ip 10.0.200.211 172.16.21.192 255.255.255.240
  InsideGlobal-2-OutsideNetwork to the list of allowed access host ip 10.0.202.39 172.16.21.192 255.255.255.240
  !
  InsideLocal.1 - 2-OutsideNetwork from the list of allowed access host ip 192.168.1.1 172.16.21.192 255.255.255.240
  InsideLocal.191 - 2-OutsideNetwork to the list of allowed access host ip 192.168.1.191 172.16.21.192 255.255.255.240
  !
  public static 10.0.200.211 (inside, outside) access-list InsideLocal.1 - 2-OutsideNetwork
  public static 10.0.202.39 (inside, outside) access-list InsideLocal.191 - 2-OutsideNetwork
  !
  correspondence address 1 card crypto outside_map InsideGlobal-2-OutsideNetwork
  !

  I think what I need is the following:
  !
  network of the OBJ_172.16.21.192_28 object
  subnet 172.16.21.192 255.255.255.240
  !
  network of the OBJ_10.0.200.211_32 object
  Home 10.0.200.211
  !
  network of the OBJ_10.0.202.39_32 object
  Home 10.0.202.39
  !
  network of the OBJ_192.168.1.1_32 object
  host 192.168.1.1
  !
  network of the OBJ_192.168.1.191_32 object
  Home 192.168.1.191
  !
  InsideGlobal-2-OutsideNetwork of the ip object OBJ_10.0.200.211_32 object OBJ_172.16.21.192_28 allowed extended access list
  InsideGlobal-2-OutsideNetwork of the ip object OBJ_10.0.202.39_32 object OBJ_172.16.21.192_28 allowed extended access list
  !
  NAT (inside, outside) static source OBJ_192.168.1.1_32 OBJ_10.0.200.211_32 OBJ_172.16.21.192_28 OBJ_172.16.21.192_28 non-proxy-arp-search of route static destination
  NAT (inside, outside) static source OBJ_192.168.1.191_32 OBJ_10.0.200.39_32 OBJ_172.16.21.192_28 OBJ_172.16.21.192_28 non-proxy-arp-search of route static destination
  !
  correspondence address 1 card crypto outside_map InsideGlobal-2-OutsideNetwork

  THX - Phil

  Hi Phil,

  The converted 8.6.x 8.2.x configuration is correct. Go with him.

  Vishnu

• % 305013-5-ASA: rules asymmetrical NAT matched for flows forward and backward; Connection refused because of the failure of the path opposite. NAT VPN clients problems after that put 8.3.2 to level.

  I've recently updated to 8.3.2 and I have been informed of these NAT changes, but even after reading the https://supportforums.cisco.com/docs/DOC-12569 I am still unable to rectify the communication network 192.168.100.0 VPN with hosts on 172.16.1.0 and 172.16.9.0. VPN clients connect to the external interface, and I try to ping inside and the demilitarized zone, respectable 172.16.1.0 and 172.16.9.0 hosts. VPN client shows that the two previously mentioned networks such as roads of security, but still not to the ping pong.

  # sh nat

  Manual NAT policies (Section 1)

  1 (inside) to the (whole) source static obj - 172.16.9.0 obj - 172.16.9.0 destination static obj - obj - unidirectional 192.168.100.0 192.168.100.0

  translate_hits = 0, untranslate_hits = 0

  2 (inside) to the (whole) source static obj - 172.16.1.0 obj - 172.16.1.0 destination static obj - obj - unidirectional 192.168.100.0 192.168.100.0

  translate_hits = 0, untranslate_hits = 0

  3 (inside) to the (whole) source static obj - 172.16.1.0 obj - 172.16.1.0 destination static obj - 172.16.12.0 obj - one-way 172.16.12.0

  translate_hits = 0, untranslate_hits = 0

  4 (dmz) to (outside) source static obj - 172.16.9.0 obj - 172.16.9.0 destination static obj - obj - unidirectional 192.168.100.0 192.168.100.0

  translate_hits = 0, untranslate_hits = 0

  5 (dmz) to (outside) source static obj - 172.16.9.0 obj - 172.16.9.0 destination static obj - 172.16.12.0 obj - one-way 172.16.12.0

  translate_hits = 0, untranslate_hits = 0

  Auto NAT policies (Section 2)

  1 (dmz), to the source (external) static obj - 172.16.9.5 interface tcp www www service

  translate_hits = 0, untranslate_hits = 142

  2 (dmz) (outdoor) source static obj - 172.16.9.5 - 01 interface service tcp 3389 3389

  translate_hits = 0, untranslate_hits = 2

  3 (dmz) (outdoor) source static obj - 172.16.9.5 - 02 interface tcp ldap ldap service

  translate_hits = 0, untranslate_hits = 0

  4 (dmz) (outdoor) source static obj interface - 172.16.9.5 - 03 service ftp ftp tcp

  translate_hits = 0, untranslate_hits = 0

  5 (dmz) to (outside) of the source static obj - 172.16.9.5 - 04 interface tcp smtp smtp service

  translate_hits = 0, untranslate_hits = 267

  6 (inside) source static obj - 172.16.9.0 172.16.9.0 (dmz)

  translate_hits = 4070, untranslate_hits = 224

  7 (inside) to (dmz) source static obj - 10.1.0.0 10.1.0.0

  translate_hits = 0, untranslate_hits = 0

  8 (inside) to (dmz) source static obj - 172.16.0.0 172.16.0.0

  translate_hits = 152, untranslate_hits = 4082

  9 (dmz) to dynamic interface of the obj - 172.16.9.0 - 01 source (outdoor)

  translate_hits = 69, untranslate_hits = 0

  10 (inside) to the obj_any interface dynamic source (external)

  translate_hits = 196, untranslate_hits = 32

  I think you must following two NAT config

  NAT (inside, outside) source static obj - 172.16.1.0 obj - 172.16.1.0 destination static obj - 192.168.100.0 obj - 192.168.100.0
  NAT (dmz, external) source static obj - 172.16.9.0 obj - 172.16.9.0 destination static obj - 192.168.100.0 obj - 192.168.100.0

  Please configure them and remove any additional NAT configuration and then try again.

• Public static political static NAT in conflict with NAT VPN

  I have a situation where I need to create a VPN site-to site between an ASA 5505 using IOS 7.2 and a Sonicwall NSA4500. The problem arises where the LAN behind the Cisco ASA has the same subnet an existing VPN currently created on the Sonicwall. Since the Sonicwall cannot have two VPN both run on the same subnet, the solution is to use policy NAT on the SAA as well as for the Sonicwall, the new VPN seems to have a different subnet.

  The current subnet behind the ASA is 192.168.10.0/24 (The Sonicwall already has a private network virtual created for another customer with the same subnet). I try to translate it to 192.168.24.0/24. The peer LAN (behind the Sonicwall) is 10.159.0.0/24. The ASA relevant configuration is:

  interface Vlan1

  IP 192.168.10.1 255.255.255.0

  access extensive list ip 192.168.24.0 outside_1_cryptomap allow 255.255.255.0 10.159.0.0 255.255.255.0

  list of access VPN extended permit ip 192.168.10.0 255.255.255.0 10.159.0.0 255.255.255.0

  public static 192.168.24.0 (inside, outside) - list of VPN access

  card crypto outside_map 1 match address outside_1_cryptomap

  In addition, there are other static NAT instructions and their associated ACLs that allow certain traffic through the firewall on the server, for example:

  public static tcp (indoor, outdoor) interface smtp SERVER smtp netmask 255.255.255.255

  The problem is this: when I enter the static strategy statement NAT, I get the message ' WARNING: real-address conflict with existing static "and then it refers to each of the static NAT statements reflecting the external address to the server. I've thought about it, and it seemed to me that the problem was that policy NAT statement must be the first statement of NAT (it is the last one) so that it is run first and all traffic destined to the VPN to the Sonicwall (destination 10.159.0.0/24) tunnel would be properly treated. If I left him as the last statement, then the other static NAT statements would prevent a part of the 10.159.0.0/24 network-bound traffic to be correctly routed through the VPN.

  So, I tried first to my stated policy NAT upward in the ASDM GUI interface. However, moving the declaration was not allowed. Then I tried to delete the five static NAT statements that point to the server (an example is above) and then recreate them, hoping that would then move up the policy statement NAT. This also failed.

  What Miss me?

  Hello

  I assumed that we could have changed the order of the 'static' , the original orders, but as it did not work for some reason any then it seems to me that you suggested or change, that I proposed should work.

  I guess that your purpose was to set up static political PAT for the VPN for some these services, then static PAT of public network access, then static NAT to policy for the rest of the network in-house.

  I guess you could choose any way seems best for you.

  Let me know if get you it working. I always find it strange that the original configuration did not work.

  Remember to mark a reply as the answer if it answered your question.

  Feel free to ask more if necessary

  -Jouni

• nat VPN question.

  Try to find what happened.  I had the remote end raise the tunnel, as they can ping resources on my side.  I am unable to ping 10.90.238.148 through this tunnel.  I used to be able to until the interface of K_Inc has been added.  The network behind this interface is 10/8.

  I asked a question earlier in another post and advises him to play opposite road of Cryptography.  And who did it.  I was able to ping 10.90.238.148 of 192.168.141.10, with the config below.

  I am at a loss to why I can't all of a sudden.  A bit of history, given routes have not changed.  By adding the command set opposite road to cryptography, I find myself with a static entry for the 10.90.238.0 network is what fixed it initially so I don't think it's a problem of route.  The remote end had an overlap with the 192.168.141.0/24 that is why my side is natted on the 10.40.27.0.  None of the nats have changed so if adding the reverse route worked for a day, it should still work.  Any thoughts?

  interface GigabitEthernet0/3.10

  VLAN 10

  nameif K_Inc

  security-level 100

  IP address 192.168.10.254 255.255.255.0

  interface GigabitEthernet0/3.141

  VLAN 141

  cold nameif

  security-level 100

  IP 192.168.141.254 255.255.255.0

  (Cold) NAT 0 access-list sheep

  NAT (cold) 1 192.168.141.0 255.255.255.0

  Access extensive list ip 192.168.141.0 CSVPNOFFSITE allow 255.255.255.0 10.90.238.0 255.255.255.0

  Access extensive list ip 10.40.27.0 CSVPNOFFSITE allow 255.255.255.0 10.90.238.0 255.255.255.0

  Access extensive list ip 192.168.141.0 CSVPNNAT allow 255.255.255.0 10.90.238.0 255.255.255.0

  IP 10.40.27.0 allow Access-list extended sheep 255.255.255.0 10.90.238.0 255.255.255.0

  static 10.40.27.0 (cold, outside) - CSVPNNAT access list

  card crypto Outside_map 5 corresponds to the address CSVPNOFFSITE

  card crypto Outside_map 5 the value reverse-road

  card crypto Outside_map 5 set pfs

  card crypto Outside_map 5 set peer 20.x.x.3

  Outside_map 5 transform-set ESP-3DES-MD5 crypto card game

  card crypto Outside_map 5 defined security-association life seconds 28800

  card crypto Outside_map 5 set security-association kilobytes of life 4608000

  tunnel-group 20.x.x.3 type ipsec-l2l

  20.x.x.3 Group of tunnel ipsec-attributes

  pre-shared-key *.

  Route outside 0.0.0.0 0.0.0.0 7.x.x.1 1

  Route 10.0.0.0 K_Inc 255.192.0.0 192.168.10.252 1

  Route K_Inc 10.64.0.0 255.224.0.0 192.168.10.252 1

  Route K_Inc 10.100.100.0 255.255.255.0 192.168.10.252 1

  Route K_Inc 10.128.0.0 255.128.0.0 192.168.10.252 1

  Tunnel is up:

  14 peer IKE: 20.x.x.243

  Type: L2L role: answering machine

  Generate a new key: no State: MM_ACTIVE

  EDIT:

  I just noticed when tracer packet i run I don't get a phase VPN or encrypt:

  Packet-trace entry cold tcp 192.168.141.10 80 80 10.90.238.148 det

  Phase: 1

  Type: FLOW-SEARCH

  Subtype:

  Result: ALLOW

  Config:

  Additional information:

  Not found no corresponding stream, creating a new stream

  Phase: 2

  Type:-ROUTE SEARCH

  Subtype: entry

  Result: ALLOW

  Config:

  Additional information:

  in 10.90.238.0 255.255.255.0 outside

  Phase: 3

  Type: IP-OPTIONS

  Subtype:

  Result: ALLOW

  Config:

  Additional information:

  Direct flow from returns search rule:

  ID = 0xad048d08, priority = 0, sector = option-ip-enabled, deny = true

  hits = 2954624, user_data = 0 x 0, cs_id = 0 x 0, reverse, flags = 0 x 0 = 0 protocol

  SRC ip = 0.0.0.0 mask 0.0.0.0, port = 0 =

  DST ip = 0.0.0.0 mask = 0.0.0.0, port = 0, dscp = 0 x 0

  Phase: 4

  Type: QOS

  Subtype:

  Result: ALLOW

  Config:

  Additional information:

  Direct flow from returns search rule:

  ID = 0xb2ed4b80, priority = 72, domain = qos by class, deny = false

  hits = 2954687, user_data = 0xb2ed49d8, cs_id = 0 x 0, reverse, flags = 0 x 0 = 0 protocol

  SRC ip = 0.0.0.0 mask 0.0.0.0, port = 0 =

  DST ip = 0.0.0.0 mask = 0.0.0.0, port = 0, dscp = 0 x 0

  Phase: 5

  Type: FOVER

  Subtype: Eve-updated

  Result: ALLOW

  Config:

  Additional information:

  Direct flow from returns search rule:

  ID = 0xad090180, priority = 20, area = read, deny = false

  hits = 618776, user_data = 0 x 0, cs_id = 0 x 0, flags = 0 x 0, Protocol = 6

  SRC ip = 0.0.0.0 mask 0.0.0.0, port = 0 =

  DST ip = 0.0.0.0 mask = 0.0.0.0, port = 0, dscp = 0 x 0

  Phase: 6

  Type: NAT

  Subtype:

  Result: ALLOW

  Config:

  static (ColdSpring, external) 74.x.x.50 192.168.141.10 netmask 255.255.255.255

  match ip host 192.168.141.10 ColdSpring outside of any

  static translation at 74.x.x.50

  translate_hits = 610710, untranslate_hits = 188039

  Additional information:

  Definition of static 192.168.141.10/0 to 74.112.122.50/0 using subnet mask 255.255.255.255

  Direct flow from returns search rule:

  ID = 0xac541e50, priority = 5, area = nat, deny = false

  hits = 610742, user_data = 0xac541c08, cs_id = 0 x 0, flags = 0 x 0 = 0 protocol

  SRC ip = 192.168.141.10, mask is 255.255.255.255, port = 0

  DST ip = 0.0.0.0 mask = 0.0.0.0, port = 0, dscp = 0 x 0

  Phase: 7

  Type: NAT

  Subtype: host-limits

  Result: ALLOW

  Config:

  static (ColdSpring, dmz) 192.168.141.0 192.168.141.0 netmask 255.255.255.0

  match ip ColdSpring 192.168.141.0 255.255.255.0 dmz all

  static translation at 192.168.141.0

  translate_hits = 4194, untranslate_hits = 20032

  Additional information:

  Direct flow from returns search rule:

  ID = 0xace2c1a0, priority = 5, area = host, deny = false

  hits = 2954683, user_data = 0xace2ce68, cs_id = 0 x 0, reverse, flags = 0 x 0 = 0 protocol

  SRC ip = 192.168.141.0, mask is 255.255.255.0, port = 0

  DST ip = 0.0.0.0 mask = 0.0.0.0, port = 0, dscp = 0 x 0

  Phase: 8

  Type: IP-OPTIONS

  Subtype:

  Result: ALLOW

  Config:

  Additional information:

  Reverse flow from returns search rule:

  ID = 0xaacbcb90, priority = 0, sector = option-ip-enabled, deny = true

  hits = 282827537, user_data = 0 x 0, cs_id = 0 x 0, reverse, flags = 0 x 0 = 0 protocol

  SRC ip = 0.0.0.0 mask 0.0.0.0, port = 0 =

  DST ip = 0.0.0.0 mask = 0.0.0.0, port = 0, dscp = 0 x 0

  Phase: 9

  Type: QOS

  Subtype:

  Result: ALLOW

  Config:

  Additional information:

  Reverse flow from returns search rule:

  ID = 0xb2ed5c78, priority = 72, domain = qos by class, deny = false

  hits = 4749562, user_data = 0xb2ed5ad0, cs_id = 0 x 0, reverse, flags = 0 x 0 = 0 protocol

  SRC ip = 0.0.0.0 mask 0.0.0.0, port = 0 =

  DST ip = 0.0.0.0 mask = 0.0.0.0, port = 0, dscp = 0 x 0

  Phase: 10

  Type: CREATING STREAMS

  Subtype:

  Result: ALLOW

  Config:

  Additional information:

  New workflow created with the 339487904 id, package sent to the next module

  Information module for forward flow...

  snp_fp_inspect_ip_options

  snp_fp_tcp_normalizer

  snp_fp_translate

  snp_fp_adjacency

  snp_fp_fragment

  snp_fp_tracer_drop

  snp_ifc_stat

  Information for reverse flow...

  snp_fp_inspect_ip_options

  snp_fp_translate

  snp_fp_tcp_normalizer

  snp_fp_adjacency

  snp_fp_fragment

  snp_fp_tracer_drop

  snp_ifc_stat

  Phase: 11

  Type:-ROUTE SEARCH

  Subtype: output and contiguity

  Result: ALLOW

  Config:

  Additional information:

  found 7.x.x.1 of next hop using ifc of evacuation outside

  contiguity Active

  0007.B400.1402 address of stretch following mac typo 51982146

  Result:

  input interface: cold

  entry status: to the top

  entry-line-status: to the top

  output interface: outside

  the status of the output: to the top

  output-line-status: to the top

  Action: allow

  What version are you running to ASA?

  My guess is that your two static NAT is configured above policy nat you have configured for the VPN?  If this is the case, move your above these static NAT NAT policy and you should see the traffic start to flow properly.

  --

  Please note all useful posts

• Rule NAT VPN problem

  Hello people, I had a lot of trouble trying to solve this problem, but hoping someone here can enlighten me.

  I have a remote site that hosts a number of services that we manage remotely with an IPSec VPN connection. When connecting to the site connect us very well and can make most of the actions like RDP and connect to servers for maintenance, but a service fails to connect unless I have add a NAT rule exempt to the configuration of the router (ASA 5505).

  Once this rule in place service work, but other services that initially worked work stoppage. In short, this rule must be in place while doing a single task, but then contracted for other tasks. I hope that there is some sort of rule or behavior, I can add to the ASDM configuration makes it so I don't have to manually add this rule whenever I connect.

  Here are the details of the rule:

  access-list 1 permit line outside_nat0_outbound extended ip 192.168.15.192 255.255.255.192 192.168.15.0 255.255.255.0

  NAT (outside) 0 outside_nat0_outbound list access outside tcp udp 0 0 0

  When the connection is established without the rule in place the ASDM syslog shows these warnings:

  Deny tcp src inside: outside:10.100.32.203/135 dst61745 by access-group "inside_access_in" [0x0, 0x0]

  The strange thing is 10.100.32.203 is IP internal my host computer. This is not yet the external IP address of the network I connect from.

  Is it possible a problem with the VPN pool using a subset of the subnet of the VIRTUAL LAN inside? Inside VLAN is 192.168.15.0/24 and the VPN is 192.168.15.200 - 250. I am ready to reconfigure the VPN address pool but need to do remotely, and am unaware of how to do this reconfiguration safely without losing my remote access, since physical access to the router itself is currently very difficult.

  If more details are needed, I am happy to give them.

  Hi GrahamB,

  Yes, the problem with too much running in subnet.

  There are a lot of private-address available, so please create a new group policy and tunnel-group and fill

  pool separate to value ip address and remote with it, when the new cluster to solve your problem, can safely remove the old one.

  I hope this helps.

  Thank you

  Rizwan Muhammed.

• Issue of 8.3 to 8.2 NAT VPN SSL

  In the study and test SSL VPN on a SAA, I have the network as shown in the attached diagram. The configuration is the result of an ASA with 8.3 but our ASA is 8.2 and at this time I am not familiar with the new NAT configuration and controls in 8.3 or later and wondering if anyone can translate the

  «nat source (indoor, outdoor) static ' for me at a 8.2 version.»

  Appreciate any help.

  Jeff

  NAT (inside, outside) static static source NETWORK_OBJ_192.168.100.0_RemotePool destination NETWORK_OBJ_192.168.3.0_Net1 NETWORK_OBJ_192.168.3.0_Net1 NETWORK_OBJ_192.168.100.0_RemotePool

  Hello

  This seems to be a NAT0 / NAT exempt in the new 8.3 + NAT format configuration

  And I guess it would make sense that we are talking about VPN connections.

  It should be something like this

  the INTERIOR-NAT0 192.168.3.0 ip access list allow 255.255.255.0 192.168.100.0 255.255.255.0

  NAT (inside) 0-list of access to the INTERIOR-NAT0

  Naturally the names/networks used in the configuration can be different depending on your existing actual configurations on the firewall.
  

  -Jouni

• 8.4 ASA using NAT VPN issue.

  Hello

  I'm working on a customer site and they have a problem with one of their VPN (we have other works well), but it is a major issue and I think it's because we use manual NAT and NAT of the object on the same server for different things.

  Traffic between indoors and outdoors:

  It works with a specific manual NAT rule of source from the server 10.10.10.10 object

  Inside

  SRC-> DST

  10.10.10.10-> 1.1.2.10 1.1.1.10-> 1.1.2.10 SNAT = VPN =-> 1.1.2.10 1.1.1.10 1.1.1.10-> 1.1.2.10 <3rd party="" fw="">

  It works with a specific using the NAT on the server of 10.10.10.10 object

  Remote

  SRC-> DST

  1.1.1.10-> 1.1.2.10 1.1.1.10-> 1.1.2.10 <3rd party="" fw="">= VPN =-> 1.1.2.10 1.1.1.10 1.1.1.10-> DNAT 10.10.10.10

  If we have the manual NAT and NAT object it does anyway.

  So the question is (as I am new to zip code 8.3 ASA) should not mix the 2 types of NAt and look at configuring it all with manual NAT or NAT object?

  With the NAT object out it does not work as it is taken in ouside NAT inside all:

  Dynamic NAT (inside, outside) source no matter what interface (this NAT to 1.1.1.1 then does not match the card encryption for VPN)

  and I tried a no - nat above that, but that does not work either.

  Straws and hugging come to mind try to configure a different config. Any pointers in the right direction would be great.

  Kind regards

  Z

  Hello

  I'm not sure that installing even with the explanation. Each NAT configuration I did for VPN used Section 1 Manual / NAT twice.

  You have configured the rule by default PAT that you use as Section 1 NAT rule. NAT rules in the new software are divided into 3 sections

  • Section 1: Manual / twice by NAT
  • Section 2: Purpose NAT
  • Section 3: Manual / double NAT (moved to section 3 using the setting "auto after")
  • The Sections are passed by from 1 to 2 and 3 in order to find a match.

  You should also notice that the Section 1 and Section 3 NAT has "line number" similar to the ACL parameter type. So if you have a default existing PAT rule configured for Section 1 and just add another Section 1 NAT rule without line/order number (VPN NAT) then it will just fall under the existing rule, making the new useless rule.

  I would advice against the use of the rule by default PAT as Section 1 NAT rule. Finally, this means that you be constantly watch and edit its configuration when you try to configure more specific rules.

  As a general rule 3 of the Section the PAT above default configuration would be the following

  NAT (inside, outside) after the automatic termination of dynamic source no matter what interface

  This would mean that you need to remove the old. That would mean as naturally as the change would temporarily dismantling all the current connections through "inside", "Outside" while you change the NAT rule format.

  If after this configure a NAT twice to the VPN (wihtout the setting "auto after"), it will be the rule in article 1 while the default PAT will be Section 3. Of course, Section 1 will be matched first.

  I'm not quite sure of what your setup of the foregoing have understood.

  You're just source NAT?

  I guess that the configuration you do is something like this?

  network of the LAN-REAL object

  10.10.10.0 subnet 255.255.255.0

  purpose of the MAPPED in LAN network

  1.1.1.0 subnet 255.255.255.0

  being REMOTE-LAN network

  1.1.2.0 subnet 255.255.255.0

  NAT static destination of LAN LAN-REAL-MAPPED Shared source (indoor, outdoor) REMOTE - LAN LAN

  If the network 1.1.1.0/24 is supposed to be one that is connected directly to your "external" to the format interface may need to be anything else.

  -Jouni

• Remote access via NAT VPN client

  I currently have a PIX506e configured to provide access to the Cisco VPN Clients remote vpn. A single client can connect successfully and have access to the planned network. However, as soon as I connect an additional client to the firewall from the same place (the two addresses are translated under the same address) the two tunnels will stop working or could not connect.

  Is the problem that I face, because two customers have the same address public after NAT, or is - it something else? Is there a way to get around this?

  Hello

  A lot of THAT NAT will not work if you use ESP.

  The solution for this is to allow NAT - t on PIX and VPN client.

  PIX:

  The following command active NAT - T (for codes plus late 6.3)

  ISAKMP nat-traversal

  The VPN Client:

  On the Transport tab, under the tab "Enable Transport Tunneling" & select "IPSec over UDP (NAT/PAT).

  HTH

  Kind regards

  GE.

• ASA Bidirectional NAT VPN

  I have a VPN tunnel configured with this NAT scenario.

  permit l2lnat1 to access extended list ip 10.1.1.1 host 172.16.1.1

  permit access list extended ip host 10.1.1.2 l2lnat2 172.16.1.1

  static (Inside, Outside) 192.168.1.1 access-list l2lnat1

  static (Inside, Outside) 192.168.1.2 access-list l2lnat2

  This NAT will be bidirectional?  In other words if the remote side of 172 try to pull up the tunnel, he will come to the top and nat to allow them to communicate or do I need to have opposite source and destination of each access list for the static method work in the opposite direction.

  Thank you.

  Hi Ty,

  Assuming that you are running the OS pre 8.3 version, then NAT configuration that you have demonstrated is bidirectional as in

  http://www.Cisco.com/en/us/docs/security/ASA/asa82/configuration/guide/nat_static.html#wp1080960

  According taffic wearing the tunnel upward depends on the configuration of ACL encryption. In your case I think you want NAT 10.1.1.1 (10.1.1.2) to 192.168.1.1 (192.168.1.2) while contacting 172.16.1.1 (172.16.1.2), so what ACL crypto should look as below, because the encryption is finally done:

  ACL_CRYPTO allowed ip 192.168.1.1 host 172.16.1.1

  ACL_CRYPTO allowed ip 192.168.1.2 host 172.16.1.2

  Accordigny peer it IPsec must have above ACL mirrored:

  ACL_CRYPTO_PEER allowed ip 172.16.1.1 host 192.168.1.1

  ACL_CRYPTO_PEER allowed host 172.16.1.2 ip 192.168.1.2

  Kind regards

  Pawel

• NAT VPN outside-&gt; dmz

  Hi all

  I have some problems with nat/sheep on a pix 515e.

  the pix is connected to a tunnel of site2site on the external interface.

  the problem is to ping the vpn tunnel to the hosts of the demilitarized zone.

  I think it should with a static entry as follows:

  static (outside, dmz) 10.43.26.0 10.43.26.0 netmask 255.255.254.0

  but in the newspaper, I always get the message:

  305005: no outside group translation not found for icmp src: 10.43.27.250 dmz:10.43.100.3 (type 8, code 0) dst

  I also tried a nat rule 0 without success.

  Then I attached a config performed:

  access-list allowed sheep ip 10.0.0.0 255.0.0.0 10.0.0.0 255.0.0.0

  access-list allowed sheep ip 10.0.0.0 255.0.0.0 192.168.0.0 255.255.0.0

  access-list allowed sheep ip 10.0.0.0 255.0.0.0 200.1.58.0 255.255.255.0

  access-list allowed sheep ip 10.0.0.0 255.0.0.0 172.16.0.0 255.255.0.0

  IP outdoor 199.99.99.2 255.255.254.0

  IP address inside the 10.43.8.12 255.255.240.0

  10.43.100.2 dmz IP address 255.255.255.0

  Global (outside) 1 199.99.99.11 netmask 255.255.255.255

  Global (outside) 1 199.99.99.14 netmask 255.255.255.255

  Global (dmz) 1 10.43.100.50 - 10.43.100.98 netmask 255.255.255.0

  Global (dmz) 1 10.43.100.99 netmask 255.255.255.0

  NAT (inside) 0 access-list sheep

  NAT (inside) 1 10.43.0.44 255.255.255.255 0 0

  NAT (inside) 1 10.43.8.0 255.255.255.0 0 0

  NAT (inside) 1 10.43.9.0 255.255.255.0 0 0

  static (inside, outside) 199.99.99.2 tcp telnet 10.43.8.52 telnet netmask 255.255.255.255 0 0

  static (inside, dmz) 10.43.8.29 10.43.8.29 netmask 255.255.255.255 0 0

  static (inside, dmz) 10.43.8.20 10.43.8.20 netmask 255.255.255.255 0 0

  static (dmz, external) 199.99.99.6 10.43.100.6 netmask 255.255.255.255 0 0

  public static 199.99.99.7 (Interior, exterior) 10.43.9.56 netmask 255.255.255.255 0 0

  public static 199.99.99.5 (Interior, exterior) 10.43.8.53 netmask 255.255.255.255 0 0

  static (dmz, external) 199.99.99.4 10.43.100.4 netmask 255.255.255.255 0 0

  static (dmz, external) 199.99.99.3 10.43.100.3 netmask 255.255.255.255 0 0

  static (outside, dmz) 10.43.26.0 10.43.26.0 netmask 255.255.254.0 0 0

  Access-group acl_out in interface outside

  acl_in access to the interface inside group

  Access-group acl_dmz in dmz interface

  any tips?

  Thank you

  Armin

  Without seeing the rest of the config it is difficult to tell you exactly what's happening (IE ACL, sysopt connection ipsec permits etc.)

  However, you will need to have a sheep for the DMZ traffic back through the VPN:

  IP 10.43.100.0 allow Access-list sheep-dmz 255.255.255.0 10.43.27.0 255.255.255.0

  NAT (dmz) access-list sheep-dmz

  Also remove the 10.43.26.0 static (outside, dmz) 10.43.26.0 netmask 255.255.254.0 0 0. I see no reason for you to destination NAT.

  HTH