identity NAT

Similar Questions

• Identity NAT - lower growth

  Having looked through the forums, it seems that identity NAT, it is what I'm looking for, but could someone confirm?

  I have a server accessible via a wan connection on a demilitarized zone. I want internal users to access this server via an INTERNAL network address.

  for example static (dmz, upside down) 10.1.1.100 200.1.1.100 netmask 255.255.255.255 0 0 - (assuming 10.1.1.0 is lan and 200.1.1.0 network via wan)

  This will work, and is it all etc. of nat/sheep conditions?

  Thank you

  Hello

  Your original post was on the right track. You need to configure is the d - nat inside so that it translate destination address of the safety interface higher at the bottom of the interface. If your ip address is 20.1.1.1 and you want to reach to the server using 10.1.1.100 which is your internal ip address, then your static should look like this.

  static (dmz, upside down) 10.1.1.100 20.1.1.1 netmask 255.255.255.255

  Thank you

  Renault

• NAT NAT_T & identity

  Hello

  I just want to know when implements VPN site to site IPsec between two ASA

  When I use NAT_T and when to use identity NAT

  my information

  says that when there is a nat between them device using NAT_T

  and if we do not use a nat device (I still don't know how if there is a nat device or not since the vpn pass through the public internet.)
  We use identity nat

  I just want to hear a simple explanation

  waiting for your answers

  Hi Marc,

  Please take a look at the section 3.2 or RFC 3947:

  http://www.FAQs.org/RFCs/RFC3947.html

  Detection of NAT is described here.

  HTH,

  Marcin

• ASA NAT to 8.4

  I'm doing the VPN tunnel between router IOS and ASA 5505. The ASA has a dynamic IP address

  Everything would be ok, but I don't understand NAT in ASA's new orders. Can you tell me how to convert it to version 8.3 - 4?

  access-list no. - NAT allowed extended ip 10.1.1.0 255.255.255.0 10.2.1.0 255.255.255.0

  Global 1 interface (outside)

  NAT (inside) - No. - NAT 0 access list

  NAT (inside) 1 0.0.0.0 0.0.0.0

  I use this link

  http://www.Cisco.com/c/en/us/support/docs/security/PIX-500-series-Securi...

  Thanks for any help.

  Take a look at the document, depending on where you can find almost everything on the new model of NAT:

  https://supportforums.Cisco.com/document/132066/ASA-NAT-83-NAT-operation-and-configuration-format-CLI

  Especially "NAT0 / NAT Exemption / identity NAT ' in part"TWICE-NAT-MANUAL-NAT"is relevant for this task.

• the NAT ID processing order

  Hello all;

  No one knows and also anyone can provide some bad infoamtion processs NAT ID flow?

  I have two nat/global declarations.

  access allowed WWW ip object-group COMPANY-A list any

  Global (outside) 30 60.100.100.60 255.255.255.192 subnet mask

  Global (DMZ) 3 interface

  Global (DMZ2) interface 50

  NAT (inside) 0 access-list SHEEP

  NAT (inside) 30-list of WWW access 0 0

  NAT (inside) 50 access-list DMZ2 0 0

  take my word for it. WWW and DMZ2 access list the two match the egressing package.

  I need to know if the nat WWW give a 90 nat id, it would solve my problem? My problem is the package for dmz2 is out the external interface.

  concerning

  Jeff

  6.3 order Ref. (http://www.cisco.com/univercd/cc/td/doc/product/iaabu/pix/pix_sw/v_63/cmdref/mr.htm#wp1032129):

  Order NAT used to match local addresses

  The firewall is local traffic to the NAT commands in the following order:

  1 nat 0-list of access (NAT exemption)? In order, until the first game. For example, you may have places of destination / limited overlapping in several orders of nat, but only the first order is put into correspondence.

  2. static (static NAT)? In order, until the first game. Because you can not use the same local address in the static NAT or static PAT orders, the order of the static controls does not matter. Similarly, for the static policy NAT, does not allow the same destination/local address and port through several instructions.

  3. static {tcp | udp} (static PAT)? In order, until the first game. Because you can not use the same local address in the static NAT or static PAT orders, the order of the static controls does not matter. Similarly, for the static policy NAT, does not allow the same destination/local address and port through several instructions.

  4. nat_id access-list (policy NAT) nat? In order, until the first game. For example, you may have addresses and ports of destination/local which overlap in several orders of nat, but only the first command is matched.

  5 (regular NAT) nat? Best match. The NAT order does not matter. The nat statement that best matches the local traffic is used. For example, you can create a general instruction to translate addresses (0.0.0.0) on an interface. If you also create a statement to translate only 10.1.1.1, when 10.1.1.1 establishes a connection, specific instruction for 10.1.1.1 is used because it suited to local traffic.

  If you configure multiple global statements on the same NAT ID, the global declarations are used in this order:

  1. overall if you use 0 (identity NAT) nat.

  2 dynamic global NAT.

  3 PAT global.

• Publish a server with NAT anchored through a tunnel VPN with ASA

  Hi all

  Thanks in advance for helping me out - I know somebody did, and I have trouble finding how do.  I don't know that I'm missing something simple.

  I have a client who wants to view a DVR device through a VPN tunnel that is published through the public firewall to collocation.  Endpoint DVR is endpoint ip assigned dynamically which tunnelle the host on demand (I know that the tunnel could fall).

  So I think / thought I could hairpin hair/policy nat this, but I'm not the best at this.

  Let's see if I can get this

  IP public 1.1.1.1\

  > External interface of ASA

  2.2.2.2 / private ip

  My config as I know it is pertinant is as follows:

  permit same-security-traffic intra-interface

  list of allowed incoming access extended ip any host 168.215.x.x

  Access-group interface incoming outside

  public static 168.215.x.x (outside, outside) 10.10.x.xnetmask 255.255.255.255

  I am running version 8.2.5 of the image of the SAA.

  If you could take a look and let me know what Miss me you please.

  Thank you

  Hello

  The problem here is of course the fact that we can not configure NAT0 without causing all traffic from the remote Internet can flow through the VPN connection.

  So I wonder if another type of NAT configuration would actually work.

  I would call it static political identity NAT if such a name exists yet.

  Something like that

  Note of DVR-POLICY-NAT-list of Direct HTTP access to VPN traffic

  allow to Access-list DVR-POLICY-NAT tcp host 10.10.2.253 eq 80 a

  public static 10.10.2.53 (inside, outside) access list DVR-POLICY-NAT

  This should basically do what

  • When the DVR is sending any traffic source TCP TCP/80 (essentially the traffic back to the connection from the main site) to ANY destination address (The Internet) then the host must translate to himself.
  • If we consider that NAT is performed before the VPN rules are processed this should mean that since we have concerns address itself, it must match the VPN rule only in this particular case where the traffic is TCP/80, which could only be the result of her replying to a link any destination TCP/80)
  • Which leads me to believe it shouldn't cause any problems with the Central connection on remote site (NAT0 is processed before political static NAT) or the RECORDER to Internet
  • Unless the DVR must be accessible directly via the Internet connection of the remote site. (He would send his answers to these HTTP connections outside with the originating source IP address) Or maybe even completely before connecting the phase failure. I have not tested.

  Hope this helps

  Be sure to mark it as answered in the affirmative. And/or useful response rate.

  Ask more if necessary.

  EDIT: typos

  -Jouni

• Please help: NAT (inside) 0 0 0 and NAT (inside) - access list 0

  I have a problem with my PIX firewall.

  I don't want any NAT to the origin of traffic inside the interface.

  When I give

  NAT (inside) - 0 80 access list

  access ip-list 80 allow a whole

  It works very well

  But when I tried

  NAT (inside) 0 0 0

  ITZ not working is not for my IPsec clients

  According to my knowledge PIX requires input NAT to allow traffic from security interface higher to lower security interface. Can I use NAT 0 by which I can get around the NAT.

  Help, please?

  Hello

  identity nat works with access-list... IE nat 0 statement with an ACL... or you can specify the network... don't know if you can put 0 0... I have not seen that someone put this...

  refer to the documentation of nat for this command:

  http://www.Cisco.com/univercd/CC/TD/doc/product/iaabu/PIX/pix_sw/v_63/cmdref/Mr.htm#wp1161298

  to the first config... That's right... who has a list of acess 80!

  REDA

• How to pass the traffic of a site VPN S2S by ASA to another S2S VPN site?

  I have a need for hosts on separate VPN networks connected to my ASA corp to communicate among themselves.  Example: Host A site 1 a need to communicate with host B on the site 2.  Both sites 1 & 2 are connected via the VPN S2S.  I would get every site traffic to flow through the ASA at the other site.  Where should I start my configuration?  NAT? ACL?

  I can ping each host in the network Corp. but cannot ping from one site to the other.  I set up same-security-traffic permit intra-interface and addition of NAT and rules the ACL to allow/permit 1 Site to contact Site 2.  When I do a trace of package through Deputy Ministers DEPUTIES, packets are allowed to pass. I read different that tell no NAT y at - it something at the other end of the VPN to do?  should NAT and ACLs rules be mirrored? Just in case, a site is an instance of MS Azure VM and the other is a 3rd party VM instance.

  On the HubASA, can I set up a new card encryption that selects the Site1 Site2 traffic and protect the traffic and value her counterpart Site2 public IP or just add this selection of traffic to the existing encryption card for the existing tunnel between HubASA and Site2?

  Just add this traffic to the existing encryption card.

  Remember that this should be added on three routers (two hubs and there has been talk).

  Site1

  CRYPTO ip access list allow Site2 subnet >

  CRYPTO ip access list allow subnet training3 >

  CRYPTO ip access list allow subnet HUB >

  Site2

  CRYPTO ip access list allow Site1 subnet >

  CRYPTO ip access list allow subnet training3 >

  CRYPTO ip access list allow subnet HUB >

  Training3

  CRYPTO ip access list allow Site1 subnet >

  CRYPTO ip access list allow Site2 subnet >

  CRYPTO ip access list allow subnet HUB >

  HUB

  CRYPTO_1 ip access list allow Site1 subnet >

  CRYPTO_1 ip access list allow Site1 subnet >

  CRYPTO_1 ip access list allow Site1 subnet >

  CRYPTO_2 ip access list allow Site2 subnet >

  CRYPTO_2 ip access list allow Site2 subnet >

  CRYPTO_2 ip access list allow Site2 subnet >

  CRYPTO_3 ip access list allow subnet training3 >

  CRYPTO_3 ip access list allow subnet training3 >

  CRYPTO_3 ip access list allow subnet training3 >

  Each of these ACLs is attributed to their respective crypto cards.  CRYPTO_1 is assigned the site1 crypto map, CRYPTO_2 is assigned to the site2 crypto card... etc.

  I hope that's clear

  In addition to this, you need to configure identity NAT / NAT provides both the HUB and the spokes of sites.

  --

  Please do not forget to select a correct answer and rate useful posts

• ASA 5505 AnyConnect 8.2 connect other subnets from site to site

  Hello

  I'm somehwat new Cisco and routing. I have an installation of two ASA 5505 that are configured for the site to site vpn and AnyConnect. The AnyConnect subnet can connect to inside VLANs to the SiteA but I can't for the remote to Site B subnet when you use AnyConnect. Any ideas? I have to add the subnet of 10.0.7.0/24 to the site to site policy? Do I need to set up several NAT rules? Details below.

  Site A: ASA 5505 8.2

  Outside: 173.X.X.X/30

  Inside: 10.0.5.0/24

  AnyConnect: 10.0.7.0/24

  Site b: ASA 5505 8.2

  Outsdie: 173.X.X.X/30

  Inside: 10.0.6.0/24

  The AnyConnect subnet cannot access the network of 10.0.6.0/24.

  Any help would be greatly appreciated! Thank you!

  Hello Kevin,

  You must go back to identity (outdoors, outdoor) identity NAT (essentially for two subnets (Anyconnect and Remote_IPSec).

  And of course to include traffic in the ACL for IPSec crypto and (if used) split with the Anyconnect tunnel.

  Note all useful posts!

  Kind regards

  Jcarvaja

  Follow me on http://laguiadelnetworking.com

• Ping LAN internal via the IPSec VPN Client

  It's my scenario.

  Software Version 7.2 (1)

  I activated the VPN in the external Interface. The IPSec Client pool is in the range 192.168.98.150 - 192.168.98.175.

  • Allowed "a whole icmp" out Interface access both within the Interface.
  • ICMP & ICMP error inspection is enabled.
  • NAT-control is disabled.

  Clients are unable to ping any IP within the LAN 'inside' but at the same time, they are able to access the devices in the LAN using HTTP, HTTPS, SSH & TELNET.

  CASE 1:

  access-list SHEEP extended permits all ip 192.168.98.0 255.255.255.0

  NAT (Inside) 0 access-list SHEEP

  I get the following log "translation portmap creation failed for CBC icmp outdoors"

  CASE 2:

  If I add a static 192.168.98.0 public (exterior, Interior) 192.168.98.0 netmask 255.255.255.0

  I am able to Ping and the problem is solved.

  Could someone explain please this behavior?

  1. Why ICMP only needs a NAT device when TCP & UDP traffic works very well.
  2. Why a portmap translation error? Why not dynamic identity NAT?

  Hello

  So he was correspondent to a configuration 'nat' on the 'outside' interface that had no configuration corresponding 'global' for the destination (probably inside) interface which caused problems and produces the 'portmap' error.

  Please do not forget to mark an answer as the correct answer, if she answered your question or useful rate responses

  -Jouni

• Translation preferably

  Hello

  Want to know what preference in the firewall does translation takes place.

  NAT static, sheep, PAT, NAT policy...

  Order NAT used to match actual addresses

  The security apparatus is the real addresses to NAT commands in the following order:

  1. NAT exemption (nat 0 access-list)? In order, until the first game. Identity NAT is not included in this category; It is included in the static NAT regular or ordinary NAT category. We do not recommend the addresses that overlap in the instructions for NAT exemption, as unexpected results may occur.

  2. static NAT and static PAT (regular and political) (static)? In order, until the first game. Public static identity NAT is included in this category.

  3. dynamic policy NAT (nat access-list)? In order, until the first game. Addresses that overlap are permitted.

  4. dynamic NAT (nat)? Best match. Regular identity NAT is included in this category. The NAT order doesn't matter; the NAT statement that best matches the real address is used. For example, you can create a general instruction to translate addresses (0.0.0.0) on an interface. If you want to translate a subset of your network (10.1.1.1) to a different address, you can create a statement to translate only 10.1.1.1. When 10.1.1.1 establishes a connection, specific instruction for 10.1.1.1 is used because it corresponds to the real better address. We do not recommend the use of statements that overlap; they use more memory and can slow down the performance of the security apparatus.

  See also:

  http://www.Cisco.com/en/us/products/ps6120/products_configuration_guide_chapter09186a00804522f6.html

  In chapter application NAT.

• Difficulty accessing 1 remote desktop when connected with VPN

  Hello world

  I have an ASA 5505 and have a problem where when I connect via VPN, I can RDP into a server using its internal address but I can't RDP to another server using its internal address.

  One that I can connect to a an IP of 192.168.2.10 and I can't connect to a a 192.168.2.11 on 3390 port IP address.

  The two rules are configured exactly the same except for the IP addresses and I can't see why I can't connect to this server.

  I am also able to connect to my camera system with an IP on port 37777 192.168.2.25 and able to ping any other device on the network internal.

  I also tried ping he and Telnet to port 3390 without success.

  Here is the config.

  ASA 4,0000 Version 1

  !

  !

  interface Ethernet0/0

  switchport access vlan 3

  !

  interface Ethernet0/1

  !

  interface Ethernet0/2

  switchport access vlan 2

  !

  interface Ethernet0/3

  !

  interface Ethernet0/4

  !

  interface Ethernet0/5

  !

  interface Ethernet0/6

  !

  interface Ethernet0/7

  !

  interface Vlan2

  nameif inside

  security-level 100

  IP 192.168.2.2 255.255.255.0

  !

  interface Vlan3

  nameif outside

  security-level 0

  10.1.1.1 IP address 255.255.255.0

  !

  passive FTP mode

  clock timezone IS - 5

  clock to summer time EDT recurring

  network obj_any object

  subnet 0.0.0.0 0.0.0.0

  network of the OWTS-LAN-OUT object

  10.1.1.10 range 10.1.1.49

  network of the OWTS-LAN-IN object

  Subnet 192.168.2.0 255.255.255.0

  service of the RDP3389 object

  service destination tcp 3389 eq

  Description of DC

  the object SERVER-IN network

  host 192.168.2.10

  network of the SERVER-OUT object

  Home 10.1.1.50

  network of the CAMERA-IN-TCP object

  Home 192.168.2.25

  network of the CAMERA-OUT object

  Home 10.1.1.51

  service object CAMERA-TCP

  Service tcp destination eq 37777

  the object SERVER-Virt-IN network

  Home 192.168.2.11

  network of the SERVER-Virt-OUT object

  Home 10.1.1.52

  service of the RDP3390 object

  Service tcp destination eq 3390

  Description of VS for Master

  network of the CAMERA-IN-UDP object

  Home 192.168.2.25

  service object CAMERA-UDP

  Service udp destination eq 37778

  the object OWTS LAN OUT VPN network

  subnet 10.1.1.128 255.255.255.128

  the object SERVER-Virt-IN-VPN network

  Home 192.168.2.11

  the object SERVER-IN-VPN network

  host 192.168.2.10

  the object CAMERA-IN-VPN network

  Home 192.168.2.25

  object-group Protocol TCPUDP

  object-protocol udp

  object-tcp protocol

  AnyConnect_Client_Local_Print deny ip extended access list a whole

  AnyConnect_Client_Local_Print list extended access permit tcp any any eq lpd

  Note AnyConnect_Client_Local_Print of access list IPP: Internet Printing Protocol

  AnyConnect_Client_Local_Print list extended access permit tcp any any eq 631

  print the access-list AnyConnect_Client_Local_Print Note Windows port

  AnyConnect_Client_Local_Print list extended access permit tcp any any eq 9100

  access-list AnyConnect_Client_Local_Print mDNS Note: multicast DNS protocol

  AnyConnect_Client_Local_Print list extended access permit udp any host 224.0.0.251 eq 5353

  AnyConnect_Client_Local_Print of access list LLMNR Note: link Local Multicast Name Resolution protocol

  AnyConnect_Client_Local_Print list extended access permit udp any host 224.0.0.252 eq 5355

  Note access list TCP/NetBIOS protocol AnyConnect_Client_Local_Print

  AnyConnect_Client_Local_Print list extended access permit tcp any any eq 137

  AnyConnect_Client_Local_Print list extended access udp allowed any any eq netbios-ns

  implicit rule of access-list inside1_access_in Note: allow all traffic to less secure networks

  inside1_access_in of access allowed any ip an extended list

  outside_access_in list extended access allowed object RDP3389 any host 192.168.2.10

  outside_access_in list extended access allowed object RDP3390 any host 192.168.2.11

  outside_access_in list extended access allowed object CAMERA TCP any host 192.168.2.25

  outside_access_in list extended access allowed object CAMERA UDP any host 192.168.2.25

  pager lines 24

  Enable logging

  exploitation forest-size of the buffer 10240

  asdm of logging of information

  Within 1500 MTU

  Outside 1500 MTU

  local pool RAVPN 10.1.1.129 - 10.1.1.254 255.255.255.128 IP mask

  no failover

  ICMP unreachable rate-limit 1 burst-size 1

  don't allow no asdm history

  ARP timeout 14400

  NAT static destination SERVER-IN-VPN SERVER-IN-VPN (indoor, outdoor) static source OWTS LAN OUT VPN OWTS-LAN-OUT-VPN

  NAT static destination of CAMERA-IN-VPN VPN-IN-CAMERA (indoor, outdoor) static source OWTS LAN OUT VPN OWTS-LAN-OUT-VPN

  NAT static destination of SERVER Virt-IN-VPN-SERVER-Virt-IN-VPN (indoor, outdoor) static source OWTS LAN OUT VPN OWTS-LAN-OUT-VPN

  !

  network of the OWTS-LAN-IN object

  NAT dynamic interface (indoor, outdoor)

  the object SERVER-IN network

  NAT (inside, outside) Shared SERVER-OUT service tcp 3389 3389

  network of the CAMERA-IN-TCP object

  NAT (inside, outside) static CAMERA-OFF 37777 37777 tcp service

  the object SERVER-Virt-IN network

  NAT (inside, outside) Shared SERVER-Virt-OUT 3390 3390 tcp service

  inside1_access_in access to the interface inside group

  Access-group outside_access_in in interface outside

  Route outside 0.0.0.0 0.0.0.0 10.1.1.2 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

  dynamic-access-policy-registration DfltAccessPolicy

  identity of the user by default-domain LOCAL

  Enable http server

  http 192.168.2.0 255.255.255.0 inside

  No snmp server location

  No snmp Server contact

  Server enable SNMP traps snmp authentication linkup, linkdown warmstart of cold start

  Crypto ipsec transform-set ikev1 ESP-AES-256-MD5 esp-aes-256 esp-md5-hmac

  Crypto ipsec transform-set ikev1 ESP-DES-SHA esp - esp-sha-hmac

  Crypto ipsec transform-set ikev1 SHA-ESP-3DES esp-3des esp-sha-hmac

  Crypto ipsec transform-set ikev1 esp ESP-DES-MD5-esp-md5-hmac

  Crypto ipsec transform-set ikev1 ESP-AES-192-MD5 esp-aes-192 esp-md5-hmac

  Crypto ipsec transform-set ikev1 ESP-3DES-MD5-esp-3des esp-md5-hmac

  Crypto ipsec transform-set ikev1 ESP-AES-256-SHA esp-aes-256 esp-sha-hmac

  Crypto ipsec transform-set ikev1 ESP-AES-128-SHA aes - esp esp-sha-hmac

  Crypto ipsec transform-set ikev1 ESP-AES-192-SHA esp-aes-192 esp-sha-hmac

  Crypto ipsec transform-set ikev1 ESP-AES-128-MD5-esp - aes esp-md5-hmac

  crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 pfs Group1 set

  crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 define ikev1 transform-set ESP-AES-128-SHA ESP-AES-128-MD5 ESP-AES-192-SHA ESP-AES-192-MD5 ESP-AES-256-SHA ESP-AES-256-MD5 ESP-3DES-SHA MD5-ESP-3DES ESP

  DES-SHA ESP-DES-MD5

  outside_map card crypto 65535-isakmp dynamic ipsec SYSTEM_DEFAULT_CRYPTO_MAP

  outside_map interface card crypto outside

  Crypto ca trustpoint ASDM_TrustPoint0

  Terminal registration

  name of the object CN = SACTSGRO

  Configure CRL

  Crypto ikev1 allow outside

  IKEv1 crypto policy 10

  authentication crack

  aes-256 encryption

  sha hash

  Group 2

  life 86400

  IKEv1 crypto policy 20

  authentication rsa - sig

  aes-256 encryption

  sha hash

  Group 2

  life 86400

  IKEv1 crypto policy 30

  preshared authentication

  aes-256 encryption

  sha hash

  Group 2

  life 86400

  IKEv1 crypto policy 40

  authentication crack

  aes-192 encryption

  sha hash

  Group 2

  life 86400

  IKEv1 crypto policy 50

  authentication rsa - sig

  aes-192 encryption

  sha hash

  Group 2

  life 86400

  IKEv1 crypto policy 60

  preshared authentication

  aes-192 encryption

  sha hash

  Group 2

  life 86400

  IKEv1 crypto policy 70

  authentication crack

  aes encryption

  sha hash

  Group 2

  life 86400

  IKEv1 crypto policy 80

  authentication rsa - sig

  aes encryption

  sha hash

  Group 2

  life 86400

  IKEv1 crypto policy 90

  preshared authentication

  aes encryption

  sha hash

  Group 2

  life 86400

  IKEv1 crypto policy 100

  authentication crack

  3des encryption

  sha hash

  Group 2

  life 86400

  IKEv1 crypto policy 110

  authentication rsa - sig

  3des encryption

  sha hash

  Group 2

  life 86400

  IKEv1 crypto policy 120

  preshared authentication

  3des encryption

  sha hash

  Group 2

  life 86400

  IKEv1 crypto policy 130

  authentication crack

  the Encryption

  sha hash

  Group 2

  life 86400

  IKEv1 crypto policy 140

  authentication rsa - sig

  the Encryption

  sha hash

  Group 2

  life 86400

  IKEv1 crypto policy 150

  preshared authentication

  the Encryption

  sha hash

  Group 2

  life 86400

  Telnet 192.168.2.0 255.255.255.0 inside

  Telnet timeout 15

  SSH 192.168.2.0 255.255.255.0 inside

  SSH timeout 5

  SSH version 2

  SSH group dh-Group1-sha1 key exchange

  Console timeout 15

  dhcpd auto_config inside

  !

  a basic threat threat detection

  statistical threat detection port

  Statistical threat detection Protocol

  Statistics-list of access threat detection

  no statistical threat detection tcp-interception

  WebVPN

  username admin privilege 15 xxxxx encrypted password

  attributes of user admin name

  VPN-group-policy DfltGrpPolicy

  type tunnel-group CTSGRA remote access

  attributes global-tunnel-group CTSGRA

  address RAVPN pool

  IPSec-attributes tunnel-group CTSGRA

  IKEv1 pre-shared-key *.

  !

  class-map inspection_default

  match default-inspection-traffic

  !

  !

  Policy-map global_policy

  class inspection_default

  inspect the icmp

  !

  global service-policy global_policy

  context of prompt hostname

  no remote anonymous reporting call

  Cryptochecksum:0140431e7642742a856e91246356e6a2

  : end

  Thanks for your help

  Ok

  So, basically, you set up the router so that you can directly connect to the ASA using the Cisco VPN Client. And also, the goal was ultimately only allow traffic to the LAN through the VPN Client ONLY connection.

  It seems to me to realize that you have only the following configurations of NAT

  VPN Client NAT0 / free of NAT / identity NAT

  the object of the LAN network

  Subnet 192.168.2.0 255.255.255.0

  network of the VPN-POOL object

  subnet 10.1.1.128 255.255.255.128

  NAT static destination LAN LAN (indoor, outdoor) static source VPN-VPN-POOL

  The NAT configuration above is simply to tell the ASA who don't do any type of NAT when there is traffic between the network 192.168.2.0/24 LAN and VPN 10.1.1.128/25 pool. That way if you have additional hosts on the local network that needs to be connected to, you won't have to do any form of changes to the NAT configurations for customer VPN users. You simply to allow connections in the ACL list (explained further below)

  Failure to PAT

  object-group network by DEFAULT-PAT-SOURCE

  object-network 192.168.2.0 255.255.255.0

  NAT automatic interface after (indoor, outdoor) dynamic source by DEFAULT-PAT-SOURCE

  This configuration is intended just to replace the previous rule of PAT dynamic on the SAA. I guess that your router will do the translation of the ASA "outside" IP address of the interface to the public IP address of routers and this configuration should allow normal use of the Internet from the local network.

  I suggest you remove all other NAT configurations, before adding these.

  Control of the VPN clients access to internal resources

  Also, I assume that your current VPN client is configured as full Tunnel. In other words, it will tunnel all traffic to the VPN connection, so that its assets?

  To control traffic from the VPN Client users, I would suggest that you do the following

  • Set up "no sysopt permit vpn connection"
    • This will change the ASA operation so that connections through a VPN connection NOT allowed by default in order to bypass the ACL 'outside' interface. So, after this change, you can allow connections you need in the 'outer' interface ACL.
  • Configure rules you need for connections from VPN clients to the "external" ACL interface. Although I guess they already exist as you connect there without the VPN also

  I can't say this with 100% certainty, but it seems to me that the things above, you should get to the point where you can access internal resources ONLY after when you have connected to the ASA via the connection of the VPN client. Naturally take precautions like backups of configuration if you want to major configuration changes. If you manage remotely the ASA then you also also have the ability to configure a timer on the SAA, whereupon it recharges automatically. This could help in situations where a missconfiguration breaks you management connection and you don't have another way to connect remotely. Then the ASA would simply restart after that timer missed and also restart with the original configuration (as long as you did not record anything between the two)

  Why you use a different port for the other devices RDP connection? I can understand it if its use through the Internet, but if the RDP connection would be used by the VPN Client only so I don't think that it is not necessary to manipulate the default port 3389 on the server or on the SAA.

  Also of course if there is something on the side of real server preventing these connections then these configuration changes may not help at all.

  Let me know if I understood something wrong

  -Jouni

• Security level limited access to high security

  Dear all,

  I have something that I need your help it clarify for me; for reasons of tests outside NAT in PIX, I placed a host on the external interface of my FW PIX and another on the inside interface. We'll call inside host (Host: 172.16.1.178) and outside (Host B: 192.168.1.96).

  I then applied:

  NAT (inside) 0 0 0 and

  NAT (outside) 0 0 0 outside

  orders to have two subnets appear to others with their original IP addresses. When ping from host B to host, no response is received and a 305005 syslog message (no translation group not found for ICMP src outdoors: 192.168.1.96 dst inside: 172.16.1.178)... However, when ping from host A to host B with the original B IP host, a response is received successfully. After this, lead to confusion if I try again to ping from host B to host, things work this time without errors. (Note: ICMP is applied both way).

  Applying clear XLATE, again! Looks like the PIX doesn't sends the request of host B to host A unless there is a previous, established session from the host through the PIX.

  Does anyone have an explanation for what's going on? Is their someone who have experienced something like this before?

  Know your opinion.

  Thank you

  Haitham

  You are using nat 0 (identity nat) that does not allow two-way communication, UNLESS the host location to the interface high security initiates the connection.

  You can try the following:

  public static 172.16.1.178 (Interior, exterior) 172.16.1.178 netmask 255.255.255.255

  Which allows inside the host to be 'translated' to the outside and allow the host located on the untrsuted start the communication itself (will be seen with the same IP address)

  more information:

  http://www.Cisco.com/univercd/CC/TD/doc/product/iaabu/PIX/pix_sw/v_63/cmdref/s.htm#wp1026694

  Franco Zamora

• Upgrade of site to Site VPN 8.2-> 8.3-> 8.4

  Hi all

  I did some research to find out where is my mistake, but I came up empty, so I was hoping someone might be able to shed light on the situation. I just recently upgraded an ASA of 8.2 to 8.4 (1 8.4 (4) to be precise). We have two site to site VPN, inheriting from the ASA and came one of the VPN and the other didn't. It seems that it happened yet to isakmp Exchange. However, I noticed that an ASA is configured with encryption card that points to an ACL using and object-group and one that works uses a card encryption that points to a network of the object. Should the automatic conversion of upgrade process the converted code the object-group, a network of the object or is this still a valid way to define interesting traffic on the SAA?

  As for my NAT statement for free traffic, I saw many people using the identity nat without the additions non-proxy-arp and route search and others with. Which is the right way to 8.4? Any information would be much appreciated!

  Best regards

  Alan

  Hello Alan,.

  The route search is for a bug when you are unable to ping from the inside interface from the other side of the tunnel.

  Now as long as the crypto ACL is set correctly does not matter if you use one of the other...

  You can share the two configs to site to another and I can check out them if you wish

  Please note all useful posts

  Julio

• Validation of the IOS VPN peer identity IP with NAT - T

  I just lost a lot of time to understand this behavior of the IOS. My conclusion reached: If you work with the good old peer identity address validation in profiles ISAKMP and the peer you are talking about is located behind a NAT, you must use the private IP address of the peer in the command "adapter address of the identity". I thought that NAT - T takes care of the translation in all sections of required configuration, but here especially, seems not so much. The interesting thing is that for all other orders, you must use the public IP address.

  See the following example (showing only the relevant articles with statements by peer inside):

  door-key crypto OUR_KEYRING

  key pre-shared key address 1.2.3.4

  Crypto isakmp PROFILE_NAME profile

  VRF TEST

  key ring OUR_KEYRING

  function identity address 192.168.99.5 255.255.255.255

  OUR_MAP 6 ipsec-isakmp crypto map

  defined peer 1.2.3.4

  the value of PROFILE_NAME isakmp-profile

  Does anyone know if this is normal or if it is a bug? It would be useful and consistent if NAT - T changed the identity of the peer address during the phase 1 negotiation, then we would not deal with peer private addressing within site to site VPN configs. I also think of IP scenarios that overlap that may occur when you work with dealing with private peer.

  See the release of relevant debugging in the attachment, after documenting a failed connection attempt (using the public, NATted IP of the peer in the command 'fit the address of identity') and once a following connection attempt (using the IP private, internal counterpart).

  My router is a C2951 with IOS 15.3 (2) T2. The counterpart is an ASA (version & unknown config so far, but I'm sure that the other engineer did not indicate what it is using a private address in its config, despite my session from behind a NAT router, too).

  Thank you & best regards

  Toni

  Toni,

  Problem with identity is that it is an encrypted package (in Exchange MM) so cannot be changed in transit, so that a host may not know reliably it is the external IP address (it can make assumptions, but he doesn't know how long it is valid for).

  Also if you "NAT 'd" identity you can't the difference between two devices behind same NAT/PAT on end of answering machine.

  There are some implmentations IKE allowing IKE to identity type and value to specify manually. IOS not among them.

  Yes decouple us identity and peer of the intellectual property, it adds flexability with a few corner cases which may arrise.

  Yet another reason why NAT is evil?

  M.