Static NAT & DMVPN Hub

Similar Questions

• Is it possible to put behind a NAT DMVPN hub? (Speaks has a public IP address)

  I he tried for a few days and couldn't make it work. The schema and configuration is in the attachment.

  Crypto isakmp profile: QM slowed down on both sides.

  Profile of crypto ipsec: NO ipsec profile established on both sides.

  Show ip PNDH (side hub): nothing is saved at all. Empty.

  Any ideas?

  Thank you!

  Difan

  As long as the HUB has a static nat translation it should work, try to set your transformation mode of Transport rather than tunnel on two spokes and hub, close your tunnel on the hub and the spokes and then turn it back on, does make a difference?

• DMVPN - Hub Hub behind PIX, rays on the outside

  Hi all

  Someone at - it examples of configuration with DMVPN, where the hub is behind a PIX and the rays are on the outside. Inside of ownership intellectual of the hub must be NAT' static ed to the hub inside.

  THX

  «Also added in Cisco IOS release 12.3(9a) and 12.3 (11) T is the ability to make router DMVPN hub behind static NAT.» It was a change in the support of ISAKMP NAT - T. For this feature to use DMVPN spoke all routers and routers hub must be upgraded and IPSec must use the mode of transport. "

  http://www.Cisco.com/en/us/products/SW/iosswrel/ps1839/products_feature_guide09186a0080110ba1.html#wp1060911

  I would like to know if this link helps

• DMVPN hub & spokes multiple w / same subnet

  I have several (about 70) sites, but each site has the exact same LAN (192.168.2.0/24) each site has an ISR800.

  To my home office, I have a configured (ISR4331) DMVPN hub.  To my home office, I have a network that each of the customers on my shelves need to access (192.168.10.0/24).

  Any other access to the customers talk should go directly to the internet through this connection wan routers.  Rays will never talk to each other.

  My tunnels are all in the 172.16.0.0/23, with \172.16.0.1 being the hub network.

  What is the best way to do it?  I feel like some sort of NAT would be the solution, but do not know what direction to look in.  I found that other positions on duplicate networks, but only for duplication of unique network... not 70 x.

  I think I'd be considered for use instead of DMVPN EasyVPN server.  He can do NAT for you automatically.

  http://www.Cisco.com/c/en/us/products/collateral/security/iOS-easy-VPN/eprod_qas0900aecd805358e0.html

  Otherwise if you use DMVPN, then Yes, you will need to NAT each LAN to address IP Tunnel.  Just treat the external interface of Tunnel like any other IP address.  You will need to use a road map to match the traffic destined for the Internet interface and another for traffic going to the Tunnel interface.

  Something like:

  ip nat inside source route-map NAT-TUNNEL interface Tunnel0 overloadip nat inside source route-map NAT-INTERNET interface Dialer0 overload
  
  access-list 105 permit ip 192.168.2.0 0.0.0.255 any
  
  route-map NAT-TUNNEL permit 10 match ip address 105 match interface Tunnel0!route-map NAT-INTERNET permit 10 match ip address 105 match interface Dialer0

• Static NAT to 10.140.2.0 to 10.240.2.0 via VPN

  I need help to set up a static nat device between oursite and seller

  oursite has a subnet 10.140.2.0/24 the provider uses for something else.  They asked that we nat 10.140.2.0/24 to 10.240.2.0/24 via the VPN, so they will see the 10.140 10.240? any help is appreciated. I think that map crypo acl must be standing as well, we run version 8.2

  LOCAL SITE - ASA - TUNEL VPN - ASA - SITE PROVIDER

  Thanks in advance

  Hello Bbftijari,

  In this case, according to the ASA version, but you will need to configure, this way:

  Pre - 8.3

  1. create groups of objects for use in the ACL,

  the LOCAL_SITE object-group network
  object-network 10.140.2.0 255.255.255.0

  the Vendor_SITE object-group network
  network-object XXXXXX XXXXXX

  2. create ACLs, as a condition,

  access-list VPN_NAT permitted object-group LOCAL_SITE object group ip Vendor_SITE

  3 create the static NAT, call the ACL, so he says "when I come inside outside of LOCAL_SITE to Vendor_SITE, I will result in 10.240.2.0/24.

  public static 10.240.2.0 (inside, outside) access-list VPN_NAT netmask 255.255.255.0

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

  Post 8.3

  1 create the network objects and create a static entry:

  the LOCAL_SITE object-group network
  object-network 10.140.2.0 255.255.255.0

  the NAT_SITE object-group network
  object-network 10.240.2.0 255.255.255.0

  the Vendor_SITE object-group network
  network-object XXXXXX XXXXXX

  2. static NAT creation,

  NAT (inside, outside) 1 static source LOCAL_SITE NAT_SITE Vendor_SITE Vendor_SITE non-proxy-arp-search of route static destination

  Test and keep me posted.

  Please note and mark it as the correct answer if it helped you.

  David Castro,

• Static Nat issue unable to resolve everything tried.

  Hello

  I have a cisco asa 5515 with asa worm 9.4.1 and asdm 7.4

  I have problem with configuring static nat, I have a server inside which ip is 172.16.1.85 and

  my external interface is configured with a static ip address.

  Internet works fine but cannot configure static nat...

  Here's my config running if please check and let me know what Miss me...

  Thank you

  ASA release 9.4 (1)
  !
  ciscoasa hostname

  names of
  !
  interface GigabitEthernet0/0
  nameif outside
  security-level 0
  IP 151.253.97.182 255.255.255.248
  !
  interface GigabitEthernet0/1
  nameif inside
  security-level 100
  IP 172.16.1.1 255.255.255.0
  !
  interface GigabitEthernet0/2
  Shutdown
  No nameif
  no level of security
  no ip address
  !
  interface GigabitEthernet0/3
  Shutdown
  No nameif
  no level of security
  no ip address
  !
  interface GigabitEthernet0/4
  Shutdown
  No nameif
  no level of security
  no ip address
  !
  interface GigabitEthernet0/5
  Shutdown
  No nameif
  no level of security
  no ip address
  !
  interface Management0/0
  management only
  nameif management
  security-level 100
  IP 192.168.1.1 255.255.255.0
  !
  boot system Disk0: / asa941-smp - k8.bin
  passive FTP mode
  object remote desktop service
  source eq 3389 destination eq 3389 tcp service
  Description remote desktop
  network of the RDP_SERVER object
  Home 172.16.1.85
  outside_access_in list extended access allow desktop remotely any4 object RDP_SERVER
  pager lines 24
  asdm of logging of information
  Outside 1500 MTU
  Within 1500 MTU
  management of MTU 1500
  no failover
  no monitor-service-interface module of
  ICMP unreachable rate-limit 1 burst-size 1
  ASDM image disk0: / asdm - 743.bin
  don't allow no asdm history
  ARP timeout 14400
  no permit-nonconnected arp
  !
  network of the RDP_SERVER object
  NAT (inside, outside) interface static service tcp 3389 3389
  !
  NAT source auto after (indoor, outdoor) dynamic one interface
  Access-group outside_access_in in interface outside
  Route outside 0.0.0.0 0.0.0.0 151.253.97.177 1
  Timeout xlate 03:00
  Pat-xlate timeout 0:00:30
  Timeout conn 01:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
  Sunrpc timeout 0:10:00 h323 0:05:00 h225 mgcp from 01:00 0:05:00 mgcp-pat 0:05:00
  Sip timeout 0:30:00 sip_media 0:02:00 prompt Protocol sip-0: 03:00 sip - disconnect 0:02:00
  Timeout sip-provisional-media 0:02:00 uauth 0:05:00 absolute
  timeout tcp-proxy-reassembly 0:01:00
  Floating conn timeout 0:00:00
  identity of the user by default-domain LOCAL
  Enable http server
  http server idle-timeout 50
  http 192.168.1.0 255.255.255.0 management

  Telnet 192.168.1.0 255.255.255.0 management
  Telnet timeout 5
  SSH stricthostkeycheck
  SSH 192.168.1.0 255.255.255.0 management
  SSH timeout 5
  SSH group dh-Group1-sha1 key exchange
  Console timeout 0
  VPDN username bricks12 password * local store
  management of 192.168.1.2 - dhcpd address 192.168.1.254
  enable dhcpd management
  !
  a basic threat threat detection
  Statistics-list of access threat detection
  no statistical threat detection tcp-interception
  dynamic-access-policy-registration DfltAccessPolicy
  username, password imran guVrfhrJftPA/rQZ encrypted privilege 15
  !
  class-map inspection_default
  match default-inspection-traffic
  !
  !
  type of policy-card inspect dns preset_dns_map
  parameters
  maximum message length automatic of customer
  message-length maximum 512
  Policy-map global_policy
  class inspection_default
  inspect the preset_dns_map dns
  inspect the ftp
  inspect h323 h225
  inspect the h323 ras
  inspect the rsh
  inspect the rtsp
  inspect esmtp
  inspect sqlnet
  inspect the skinny
  inspect sunrpc
  inspect xdmcp
  inspect the sip
  inspect the netbios
  inspect the tftp
  Review the ip options
  !
  global service-policy global_policy
  context of prompt hostname
  anonymous reporting remote call

  ciscoasa #.

  Hello

  Change this ACL: -.

  outside_access_in list extended access allow desktop remotely any4 object RDP_SERVER

  TO

  outside_access_in list extended access allowed object RDP_SERVER eq any4 tcp 3389

  Thank you and best regards,

  Maryse Amrodia

• Dual active/passive failover of ISP with static Nat on Cisco 1941

  Hello world

  I'm working on a configuration of a client and I have everything in place right now except the NAT' static ing.  The config fails during an ISP to another and track als and routes by default static weighted, the PAT rocking with course to each interface maps.  It is, is it possible to switch on the large amount of static NAT entries to the ISP of backup?  So far, everything I've read said no because you can have only one entry per ip/port combo, other than another configuration static NAT double server with a different IP address.  I just want to be sure before making my recommendations, all thoughts are greatly appreciated.

  Thank you

  Brandon

  In fact, you can also long as you use standard NAT ("ip nat inside source static") or not NVI ('ip nat static source') for your attackers. You apply the roadmap by the end of the static NAT statement to indicate which interface it should apply to. So, if you have something like this:

   ip access-list extended ACL_NAT permit ip 192.168.0.0 255.255.255.0 any ! route-map RM_NAT_ISP1 match ip address ACL_NAT match interface GigabitEthernet0/1 ! route-map RM_NAT_ISP2 match ip address ACL_NAT match interface GigabitEthernet0/2 

  Using port 80/tcp for example, you can do this:

   ip nat inside source static tcp x.x.x.x 80 y.y.y.y 80 route-map RM_NAT_ISP1 ip nat inside source static tcp x.x.x.x 80 z.z.z.z 80 route-map RM_NAT_ISP2 

  Just replace x.x.x.x with the LAN address of the machine that you are shipping y.y.y.y with the WAN address you are shipping on isps1 and z.z.z.z with the address of the ISP WAN you are shipping on ISP2. The static NAT will be conditional on the roadmap, at this point.

  This works with TCP, UDP, and IP forwarding, but does not require that you use an IPv4 address to your WAN address. For some reason, it does not work if you use an interface... so if you're using dynamic addresses, it will be more complicated.

• Hardware requirements for DMVPN HUB

  Hi all

  is that anyone can confirm that the 1841 below can take over as dmvpn HUB for 3 spoke?

  Cisco 1841 (revision 6.0) with 222208 K/K 39936 bytes of memory.
  Card processor ID FCZ10xxxxxxx
  2 FastEthernet interfaces
  1 module of virtual private network (VPN)
  Configuration of DRAM is 64 bits wide with disabled parity.
  191K bytes of NVRAM memory.
  126000K bytes of ATA CompactFlash (read/write)

  Thanks in advance,

  RJ

  OK, 1 MBit is easy for a 1841.

  15.0 (1) M10 is the actual release under 15.0 and 15.1 (4) M10 is the Cisco proposed release. I would upgrade the router before going live if possible. If you have no support contract, running IOS should also be fine.

• Public static NAT vs. Access-List

  Hello

  I have a question what is the best practice static NAT and access list. Example:

  Server (192.168.1.1) Web inside to outside (10.10.10.10) with the port 80 and 443.

  IP nat inside source static tcp 192.168.1.1 80 10.10.10.10 80

  IP nat inside source static tcp 192.168.1.1 10.10.10.10 443 443

  Or

  IP nat inside source static 192.168.1.1 10.10.10.10

  Access-list 101 permit tcp any host 10.10.10.10 eq 80

  Access-list 101 permit tcp any host 10.10.10.10 eq 443

  interface ethernet0
  IP access-group 101 in

  Thank you

  The operational reasons - it will break things.

• Static NAT by ASA

  I configured a static NAT through my ASA, which for some

  reason does not work - I think that the problem is with the NAT or

  der rather than the rule itself, but I would be very grateful if someone

  could you help me diagnose the problem.

  command line, the rule is: -.

  static (UKSCMGMT, management) 10.20.20.20 192.168.1.2 255.255.255.255 subnet mask

  My theory is that anything with a destination address of 10.20.20.20 would be considered to be 192.168.1.2 on the UKSCMGMT interface.

  in looking at ASDM rule looks like this

  Type the address of the Source Destination interface trans

  Static empty management 192.168.1.2 10.20.20.20

  There are a few rules exemption related to 192.168.1.2 - but they are host-to-host and should not affect the static translation.

  Yes, quite correct. You can configure NAT exemption by network instead of by each host. If you have guests that can be grouped in a subnet, configure as network instructions instead.

• Static NAT enable VPN site-to-site.

  Hello

  We plan to build VPN site to site, but, we have a single public routerable internet IP address to assign VPN on Site A, but Site B is ok.

  in this case, I think that we must use static NAT on the router, the simple diagram is as below.

  internal a subnet - router VPN - router for Internet of the Site - to - VPN - B B Site internal subnet.

  the final goal is to make the communication between internal a subnet and subnet B on IPSEC tunnel.

  OK, as I said, Site A having a public IP address, then it must use the static NAT and need to apply on the Site router.

  Router

  interface x/x

  Head of ESCR to the internet

  NAT outside IP

  !

  interface x/x

  Head of DESC to internal (VPN)

  IP nat inside

  !

  IP nat inside source static (like IP address x.x.x.x) public (as private VPN interface IP x.x.x.x)

  so, wouldn't be work without any problem? I think it will work, but I would find other one just in case.

  Hey,.

  Is that what you try to achieve:

  subnet A - A = vpn router = router B - Sub-B network

  and you need communicate between Subnet A and subnet via ipsec vpn b?

  Concerning

• Static nat and NAT ACL 0

  All,

  I have nat 0 ACL indicating that an ip address should not be natted, while a static nat statement saying we need natted. I just want to know that we will have precedence.

  Thank you

  It is of the order of operations PIX nat / ASA.

  the NAT 0 acl_name (nameif) has priority.

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

  2. match the existing xlates

  3. match the static controls

  a. static NAT with no access list

  b. static PAT with no access list

  4. match orders nat

  a. nat [id] access-list (first match)

  b. nat [id] [address] [mask] (best match)

  i. If the ID is 0, create an xlate identity

  II. use global pool for dynamic NAT

  III. use global dynamic pool for PAT

• Static NAT with asa 5520

  Hi all

  I have the following situation

  The following rules of the static nat

  static (inside, outside) tcp 200.200.200.200 80 10.0.0.200 80 netmask 255.255.255.255

  static (inside, outside) 200.200.200.200 tcp 8080 10.0.0.200 80 netmask 255.255.255.255

  I would redirect all packets destined for port 8080 and 80 IP address 200.200.200.200,

  to the private IP address on port 80 10.0.0.200.

  I tried to do that the ASA said there is already a rule, there is a way it be done?

  Kind regards.

  I don't think you can use port forwarding using the same local destination IP on port 80 in this way, fw will give you duplicate static entries.

  You can however get around and give 10.0.0.200 NIC a secondary IP address i.e. 10.0.0.201 and make electricity as follows.

  static (inside, outside) tcp 200.200.200.200 www 8080 10.0.0.201 netmask 255.255.255.255

  static (inside, outside) tcp 200.200.200.200 80 10.0.0.200 80 netmask 255.255.255.255

  See examples of port forwarding

  http://www.Cisco.com/en/us/products/HW/vpndevc/ps2030/products_tech_note09186a00804708b4.shtml

  concerning

• Static NAT with the road map for excluding the VPN

  We have problems of access to certain IPs NATted static via a VPN.  After some research, we have learned that you have to exclude traffic destined for the VPN to the static NAT using a road map. So we did this:

  10.1.1.x is the VPN IP pool.

  access-list 130 refuse ip 192.168.1.0 0.0.0.255 10.1.1.0 0.0.0.255
  access-list 130 allow ip 192.168.1.0 0.0.0.255 any

  sheep allowed 10 route map
  corresponds to the IP 130

  IP nat inside source static 192.168.1.5 1.1.1.1 sheep map route

  Above worked to fix the VPN but the IP 192.168.1.5 is no longer publicly available via 1.1.1.1.  What seems to happen, is that the static NAT is not really work and this IP address is NATted with the IP of PAT.

  Any ideas on how to get this to work?

  Thank you
  Diego

  Hello

  The following example details exactly your case:

  http://www.Cisco.com/en/us/Tech/tk583/TK372/technologies_configuration_example09186a0080094634.shtml

  Try to replace the 192.168.1.0 subnet by the host address.

  It should work

  HTH

  Laurent.

• DMVPN Hub IP address change

  Hi all!

  I'm upgrading to our network environment in the coming months to include a redundant Internet connection.  This change is requireing our ISP go us from a 30 to a 29.  Currently the 3845 router I have in the 30 subnet is the DMVPN hub for our 8 remote teleworkers with 881 routers in their home offices.

  The preparation of this change of IP address, my thoughts were to create a new interface of GRE tunnel with the new parameters of DMVPN hub before the address change IP takes place. Once we move to the 29, the spoke routers should be able to reconnect to our network under the new tunnel interface.  We run EIGRP on our DMVPN, so all roads should change to the new interface to tunnel those tunnels is in place.

  Is this the best way to handle this?

  Thanks for all your comments!

  I don't think that there is a better way to cope than what you plan to do.

  Create a new one with the new IP address, once it is able to reach is it will come automatically upward and forward it on this tunnel.

  Or ask your ISP to allow you to keep the old 30 space for a week to do a graceful migration