NAT political

Similar Questions

• Policy nat for L2L and external access

  Hello

  I'm running into an interesting question with a 506th PIX 6.3 (4)

  I created a VPN with our central location and implemented a policy nat on the 506th NAT their local 192.168.1.0/24 IPs to 10.200.25.0/24. This NATing works very well except for servers that also provide a static external IP address. I made a few captures of packets and traffic is crossing the VPN as expected and what actually at the remote end, but the answers are nat would be on the 'outside' ip of the host instead of the NAT. political I can ping other hosts on the remote network very well from the central location, not just those who have a static external IP address.

  Example:

  10.10.7.1 is my central site and try to ping a server with an IP address of 10.200.25.11 through the VPN. The traffic leaves the site central, is encrypted and delivered the firewall remotely. The firewall remotely translated 10.200.25.11-> 192.168.1.11 (the REAL Server IP) and delivers the package and the server responds, but answers are nat would be its public ip address of 75.X.X.X instead of 10.200.25.11.

  Any thoughs on how I can work around this problem?

  Here are the relevant config:

  permit for line of policy-nat access-list 1 ip 192.168.1.0 255.255.255.0 10.1.1.0 255.255.255.0

  allowed for access policy-nat-list line 2 ip 192.168.1.0 255.255.255.0 10.1.2.0 255.255.255.0

  allowed for line of policy-nat to access list 3 ip 192.168.1.0 255.255.255.0 10.10.7.0 255.255.255.0

  list of access vpn-sheep allowed ip 192.168.1.0 255.255.255.0 192.168.2.0 255.255.255.0

  list of access vpn-sheep allowed ip 192.168.1.0 255.255.255.0 172.16.100.0 255.255.255.0

  list of access vpn-sheep allowed ip 192.168.1.0 255.255.255.0 10.100.11.0 255.255.255.0

  NAT (inside) 0-list of access vpn-sheep

  NAT (inside) 1 0.0.0.0 0.0.0.0 0 0

  Global 1 interface (outside)

  public static 75.x.x.x (indoor, outdoor) 192.168.1.11 netmask 255.255.255.255 0 0

  public static 10.200.25.0 (inside, outside) - list of access policy-nat 0 0

  Try to rearrange your static rules:

  Do the static strategy, the first to be read by the pix

  public static 10.200.25.0 (inside, outside) - list of access policy-nat 0 0

  public static 75.x.x.x (indoor, outdoor) 192.168.1.11 netmask 255.255.255.255 0 0

  See how it goes

• 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

• Need help to understand political static with Nat No.

  Hi all

  I have a Pix 515e with 6 interfaces. 5 interfaces are considered as internal that we don't want any translation NAT occur between them. We want only NAT between the 5 and the external interface.

  I created a No_Nat ACL successfully to not manage any portion of nat.

  What I have trouble understanding is the static command to allow traffic between higher levels to lower levels and vice versa.

  I understand the

  public static inside_address outside_address (indoor, outdoor)

  for the part of NAT translation.

  What I do not understand, this is when the inside address and address outside are the same, what order are going. For example, my inner interface (192.168.1.0/24) (sec100) is where the live servers, and I have another interface named accounting (192.168.2.0/24) (sec75).

  If I don't want no nat occurs between these two, I have the following

  No_Nat of the 192.168.1.0/24 192.168.2.0/24 ip access list permit

  No_Nat of the 192.168.1.0/24 192.168.2.0/24 ip access list permit

  NAT (inside) 0-list of access No_Nat

  NAT (accounting) 0-list of access No_Nat

  Now how can I enter the static command?

  Maybe

  static (inside, accounting) 192.168.1.0 192.168.1.0 netmask 255.255.255.0

  or

  static (inside, accounting) 192.168.2.0 192.168.2.0 netmask 255.255.255.0

  or

  static (accounting, inside) 192.168.1.0 192.168.1.0 netmask 255.255.255.0

  or

  static (accounting, inside) 192.168.2.0 192.168.2.0 netmask 255.255.255.0

  I do not understand the prescription for it and why it would be used one verses the other way. Is the security level determines the order? Do I need two static command, one for each direction?

  Thank you

  Denny

  Hello denny

  static can be defined in any way... its only traffic that determines what it... for example, if accounting dmz is access to any server on your inside interface, you normally want the accounting servers see the original on its public IP server inside... so, you will end up as static

  static (inside, accounting) 192.168.1.0 192.168.1.0 netmask 255.255.255.0

  only the above static command is sufficient to establish connectivity between inside and dmz accounting. u don't need 2 static on any sense...

  Similarly, if you want to inside users to access a server on the dmz accounting, you can write a static type

  static (accounting, inside) 192.168.2.0 192.168.2.0 netmask 255.255.255.0

  hope you understand. Let us know if you need help... but normally a statement nat 0 is more than enough for the inside / dmz communication

  Kind regards

  REDA

• Political L2L NAT and static NAT VPN

  Here's the scenario:  I'm to establish a VPN L2L.  When you try to determine who hosts inside my network access hosts on the remote network through the VPN, I can't get a straight answer from officials.

  My thought was to use a private network of 10.17.24.0/24 and NAT all hosts on my inside the network to 10.17.24.x.  As a side note, the hosts of my inner network can be on any subnet in the beach of 172.12.x.0.  I would then put 10.17.24.0/24 in my interesting traffic for my ACL crypto.  From the hosts inside my network need to browse Internet AND communicate with hosts on the remote network through the VPN, I was going to try to do this with policy NAT. is it possible to use NAT policy in this case?  Or what I need to use static? I start with static but could not navigate the Internet eventually.  I know I'm missing something with the static, but can not understand.  I'm still pretty new to all this stuff so please forgive my ignorance.

  For example:

  
  

  access-list allowed NAT1 host ip 172.21.1.1 REMOTEL2L_SUBNET
  access-list allowed NAT2 host ip 172.21.2.5 REMOTEL2L_SUBNET
  access-list allowed host ip 172.21.15.7 REMOTEL2L_SUBNET VIH3

  static (in, out) 10.17.24.1 access-list NAT1
  static (in, out) 10.17.24.2 access-list NAT2
  static (in, out) 10.17.24.3 access-list VIH3

  The above configuration will be NAT 172.21.1.1 to 10.17.24.1 when you go to the remote subnet (across the L2L).

  The same behavior for other hosts.

  The important thing is that the ACL for crypto will come from the address using a NAT:

  list of allowed VPN ip 10.17.24.1 REMOTEL2L_SUBNET host access
  list of allowed VPN ip 172.17.24.2 REMOTEL2L_SUBNET host access
  list of allowed VPN ip 172.17.24.3 REMOTEL2L_SUBNET host access

  Or just the whole subnet:

  VPN ip 172.17.24.0 access list allow 255.255.255.0 REMOTEL2L_SUBNET

  The important thing is that interesting traffic matches at both ends!

  In addition, you can still provide Internet and local as normally...

  Internet access:

  NAT (inside) 1 172.21.0.0 255.255.0.0

  Global 1 interface (outside)

  It will be useful.

  Federico.

• Problems with NAT? Can't access internet from inside the network?

  I was intrigued with this problem for a few days now. I'm stuck on what could be the issue. The problem is that I can ping my router, G0/0 and G0/1, to the internet. However, since the switch and my PC, I can not ping Internet. I'm sure that everything is configured correctly, but here is my setup for the switch and the router:

  Router 1:

  version 15.1 no service button horodateurs service debug datetime msec Log service timestamps datetime msec encryption password service ! hostname LAN_Router_1 ! boot-start-marker boot-end-marker ! ! enable secret 5 *. ! No aaa new-model ! no location network-clock-participate 3 ! dot11 syslog no ip source route ! IP cef ! ! ! ! domain IP MyTestLab.com 8.8.8.8 IP name-server IP-server names 8.8.4.4 No ipv6 cef ! Authenticated MultiLink bundle-name Panel ! ! ! ! ! voice-card 0 ! ! ! ! ! ! ! Crypto pki token removal timeout default 0 ! ! ! ! license udi pid CISCO3845-MB sn FOC105013BA username * secret privilege 15 5 *. ! redundancy ! ! property intellectual ssh time 60 property intellectual ssh authentication-2 retries property intellectual ssh event logging property intellectual ssh version 2 ! ! ! ! ! ! ! ! interface Loopback0 192.168.254.1 IP 255.255.255.255 ! interface GigabitEthernet0/0 DHCP IP address penetration of the IP stream stream IP output NAT outside IP IP virtual-reassembly in automatic duplex automatic speed media type rj45 ! interface GigabitEthernet0/1 the IP 192.168.0.1 255.255.255.248 penetration of the IP stream stream IP output IP nat inside IP virtual-reassembly in GLBP 100 ip 192.168.0.4 priority GLBP 100 115 GLBP 100 preempt automatic duplex automatic speed media type rj45 ! ospf Router 5 router ID - 192.168.254.1 network 192.168.0.1 0.0.0.0 area 1 192.168.254.1 network 0.0.0.0 area 0 ! IP forward-Protocol ND no ip address of the http server no ip http secure server ! ! IP nat inside source list 10 interface GigabitEthernet0/0 overload IP route 0.0.0.0 0.0.0.0 dhcp ! access-list 10 permit 192.168.94.32 0.0.0.15 connect access-list 10 permit 192.168.17.0 connect 0.0.0.7 access-list 10 permit 192.168.52.0 connect 0.0.0.7

  
  access-list 10 permit 192.168.0.0 0.0.0.7 connect
  access-list 10 deny any newspaper
  !
  !
  !
  !
  !
  !
  control plan
  !
  !
  !
  !

  profile MGCP default
  !
  !
  !
  !
  !
  connection of the banner ^ C
  W A R N I N G

  THIS IS A PRIVATE COMPUTER SYSTEM.

  This computer system, including all related equipment, network devices
  (specifically including Internet access), are provided only for
  authorized used.

  All computer systems may be monitored for all lawful, including purpose
  to ensure that their use is authorized, for management of the system, to
  facilitate protection against unauthorized access, and to verify security
  survival and operational security procedures.

  Monitoring includes active attacks by authorized personnel and their
  entities to test or verify the security of the system. During the surveillance,.
  information may be examined, recorded, copied and used for authorized
  purposes.

  All information, including personal information, placed on or sent over
  This system may be monitored. Uses of this system, authorized or
  unauthorized, constitutes consent to monitoring of this system.

  Unauthorized use may subject you to criminal prosecution. Evidence of
  any unauthorized use collected during monitoring may be used for
  administrative, criminal or other adverse action. Use of this system
  constitutes a consent to monitoring for these purposes.
  ^ C
  !
  Line con 0
  Synchronous recording
  local connection
  line to 0
  line vty 0
  local connection
  entry ssh transport
  output transport ssh
  line vty 1 4
  opening of session
  transport of entry all
  !
  Scheduler allocate 20000 1000
  NTP 198.60.73.8 Server
  NTP 13.85.70.43 Server
  SaveRunConfig event manager applet
  cron cron-event timer entry ' 0 0 * * ".
  command action 1.0 cli 'enable '.
  cli 2.0 action command "RAM".

  Router 2:

  version 15.1 horodateurs service debug datetime msec Log service timestamps datetime msec encryption password service ! hostname LAN_Router_2 ! boot-start-marker boot-end-marker ! ! ! card order type necessary for slot 1 Monitor logging warnings enable secret 5 *. ! No aaa new-model ! clock timezone CST - 5 0 ! dot11 syslog IP source-route ! IP cef ! ! ! ! domain IP MyTestLab.com 8.8.8.8 IP name-server IP-server names 8.8.4.4 No ipv6 cef ! Authenticated MultiLink bundle-name Panel ! ! ! ! type of parameter-card inspect global Select a dropped packet newspapers ! voice-card 0 ! ! ! ! !

  
  !
  !
  Crypto pki token removal timeout default 0
  !
  !
  !
  !
  license udi pid CISCO3845-MB sn FOC1411592J
  username * secret 5 *.

  !
  redundancy
  !
  !
  property intellectual ssh time 60
  property intellectual ssh authentication-2 retries
  property intellectual ssh event logging
  property intellectual ssh version 2
  !
  !
  !
  !
  !
  !
  !
  !
  interface Loopback0
  192.168.254.2 the IP 255.255.255.255
  !
  interface GigabitEthernet0/0
  DHCP IP address
  penetration of the IP stream
  stream IP output
  NAT outside IP
  IP virtual-reassembly in
  automatic duplex
  automatic speed
  media type rj45
  !
  interface GigabitEthernet0/1
  IP 192.168.0.2 255.255.255.248
  penetration of the IP stream
  stream IP output
  IP nat inside
  IP virtual-reassembly in
  GLBP 100 ip 192.168.0.4
  priority GLBP 100 110
  automatic duplex
  automatic speed
  media type rj45
  !
  ospf Router 5
  router ID - 192.168.254.2
  network 192.168.0.2 0.0.0.0 area 1
  0.0.0.0 network 192.168.254.2 area 0
  !
  Default IP gateway 192.168.0.1
  IP forward-Protocol ND
  no ip address of the http server
  no ip http secure server
  !
  !
  IP nat inside source list 10 interface GigabitEthernet0/0 overload
  IP route 0.0.0.0 0.0.0.0 dhcp
  !
  SSH extended IP access list
  permit tcp host 192.168.52.2 any eq 22 log
  permit tcp 192.168.10.0 0.0.0.255 any eq 22 log
  permit tcp host 192.168.17.18 any eq 22 log
  any eq 22 host tcp 192.168.0.1 newspaper permit
  permit tcp host 192.168.0.2 any eq 22 log
  permit tcp host 192.168.0.3 any eq 22 log
  permit tcp host 192.168.0.5 any eq 22 log
  denyip a session
  !
  access-list 10 permit 192.168.94.32 0.0.0.15 connect
  access-list 10 permit 192.168.17.0 connect 0.0.0.7
  access-list 10 permit 192.168.52.0 connect 0.0.0.7
  access-list 10 permit 192.168.0.0 0.0.0.7 connect
  access-list 10 deny any newspaper
  !
  !
  !
  !
  !
  !
  control plan
  !
  !
  !
  !
  profile MGCP default
  !
  !
  !
  !
  !
  connection of the banner ^ C
  W A R N I N G

  THIS IS A PRIVATE COMPUTER SYSTEM.

  This computer system, including all related equipment, network devices
  (specifically including Internet access), are provided only for
  authorized used.

  All computer systems may be monitored for all lawful, including purpose
  to ensure that their use is authorized, for management of the system, to
  facilitate protection against unauthorized access, and to verify security
  survival and operational security procedures.

  Monitoring includes active attacks by authorized personnel and their
  entities to test or verify the security of the system. During the surveillance,.
  information may be examined, recorded, copied and used for authorized
  purposes.

  All information, including personal information, placed on or sent over
  This system may be monitored. Uses of this system, authorized or
  unauthorized, constitutes consent to monitoring of this system.

  Unauthorized use may subject you to criminal prosecution. Evidence of
  any unauthorized use collected during monitoring may be used for
  administrative, criminal or other adverse action. Use of this system
  constitutes a consent to monitoring for these purposes.
  ^ C
  !
  Line con 0
  session-timeout 360
  exec-timeout 360 0
  7 password *.
  Synchronous recording
  local connection
  line to 0
  opening of session
  line vty 0 4
  SSH access class in
  Synchronous recording
  local connection
  entry ssh transport
  output transport ssh
  !
  Scheduler allocate 20000 1000
  NTP 198.60.73.8 Server
  NTP 13.85.70.43 Server
  SaveRunConfig event manager applet
  cron cron-event timer entry ' 0 0 * * ".
  command action 1.0 cli 'enable '.
  cli 2.0 action command "RAM".

  Switch:

  version 12.2 no service button tcp KeepAlive-component snap-in service a tcp-KeepAlive-quick service horodateurs service debug uptime Log service timestamps uptime encryption password service ! hostname LAN_Switch ! boot-start-marker boot-end-marker ! ! username * secret privilege 15 5 *. ! ! ! No aaa new-model clock timezone CST - 6 1 supply ws-c3750-24ts switch mtu 1500 routing system IP routing IP - domain name MyTestLab.com 8.8.8.8 IP name-server IP-server names 8.8.4.4 ! ! ! ! ! ! ! ! ! spanning tree mode rapid pvst spanning tree logging spanning tree extend id-system ! internal allocation policy of VLAN ascendant ! property intellectual ssh time 60 property intellectual ssh authentication-2 retries property intellectual ssh event logging property intellectual ssh version 2 ! ! interface Loopback0 192.168.254.5 the IP 255.255.255.255 ! interface FastEthernet1/0/1 switchport access vlan 17 switchport mode access spanning tree portfast spanning tree enable bpduguard ! interface FastEthernet1/0/2 switchport access vlan 10 switchport mode access spanning tree portfast spanning tree enable bpduguard ! interface FastEthernet1/0/3 switchport access vlan 666 switchport mode access Shutdown spanning tree portfast spanning tree enable bpduguard ! interface FastEthernet1/0/4 switchport access vlan 666 switchport mode access Shutdown spanning tree portfast spanning tree enable bpduguard

  
  !
  interface FastEthernet1/0/5
  switchport access vlan 666
  switchport mode access
  Shutdown
  spanning tree portfast
  spanning tree enable bpduguard
  !
  interface FastEthernet1/0/6
  switchport access vlan 666
  switchport mode access
  Shutdown
  spanning tree portfast
  spanning tree enable bpduguard
  !
  interface FastEthernet1/0/7
  switchport access vlan 666
  switchport mode access
  Shutdown
  spanning tree portfast
  spanning tree enable bpduguard
  !
  interface FastEthernet1/0/8
  switchport access vlan 666
  switchport mode access
  Shutdown
  spanning tree portfast
  spanning tree enable bpduguard
  !
  interface FastEthernet1/0/9
  switchport access vlan 666
  switchport mode access
  Shutdown
  spanning tree portfast
  spanning tree enable bpduguard
  !
  interface FastEthernet1/0/10
  switchport access vlan 666
  switchport mode access
  Shutdown
  spanning tree portfast
  spanning tree enable bpduguard
  !
  interface FastEthernet1/0/11
  switchport access vlan 666
  switchport mode access
  Shutdown
  spanning tree portfast
  spanning tree enable bpduguard
  !
  interface FastEthernet1/0/12
  switchport access vlan 666
  switchport mode access
  Shutdown
  spanning tree portfast
  spanning tree enable bpduguard
  !
  interface FastEthernet1/0/13
  switchport access vlan 666
  switchport mode access
  Shutdown
  spanning tree portfast
  spanning tree enable bpduguard
  !
  interface FastEthernet1/0/14
  switchport access vlan 666
  switchport mode access
  Shutdown
  spanning tree portfast
  spanning tree enable bpduguard
  !
  interface FastEthernet1/0/15
  switchport access vlan 666
  switchport mode access
  Shutdown
  spanning tree portfast
  spanning tree enable bpduguard
  !
  interface FastEthernet1/0/16
  switchport access vlan 666
  switchport mode access
  Shutdown
  spanning tree portfast
  spanning tree enable bpduguard
  !
  interface FastEthernet1/0/17
  switchport access vlan 666
  switchport mode access
  Shutdown
  spanning tree portfast
  spanning tree enable bpduguard
  !
  interface FastEthernet1/0/18
  switchport access vlan 666
  switchport mode access
  Shutdown
  spanning tree portfast
  spanning tree enable bpduguard
  !
  interface FastEthernet1/0/19
  Description # PC #.
  switchport access vlan 10
  switchport mode access
  spanning tree portfast
  spanning tree enable bpduguard
  !
  interface FastEthernet1/0/20
  Description # X_BOX #.
  switchport access vlan 666
  switchport mode access
  Shutdown
  spanning tree portfast
  spanning tree enable bpduguard
  !
  interface FastEthernet1/0/21
  switchport access vlan 94
  switchport mode access
  spanning tree portfast
  spanning tree enable bpduguard
  !
  interface FastEthernet1/0/22
  switchport access vlan 5
  switchport mode access
  !
  interface FastEthernet1/0/23
  switchport access vlan 5
  switchport mode access
  !
  interface FastEthernet1/0/24
  switchport access vlan 5
  switchport mode access
  !
  GigabitEthernet1/0/1 interface
  switchport access vlan 666
  Shutdown
  !
  interface GigabitEthernet1/0/2
  switchport access vlan 666
  Shutdown
  !
  interface Vlan1
  no ip address
  Shutdown
  !
  interface Vlan5
  IP 192.168.0.5 255.255.255.248
  !
  interface Vlan10
  address 192.168.10.2 255.255.255.0
  !
  interface Vlan17
  IP 192.168.17.17 255.255.255.248
  !
  interface Vlan52
  IP 192.168.52.1 255.255.255.248
  !
  interface Vlan94
  IP 192.168.94.33 255.255.255.240
  !
  ospf Router 5
  router ID - 192.168.254.5
  Log-adjacency-changes
  network 192.168.0.5 0.0.0.0 area 1
  network 192.168.10.2 0.0.0.0 area 2
  network 192.168.17.17 0.0.0.0 area 2
  network 192.168.52.1 0.0.0.0 area 2
  network 192.168.94.33 0.0.0.0 area 2
  0.0.0.0 network 192.168.254.5 area 0
  !
  IP classless
  IP route 0.0.0.0 0.0.0.0 192.168.0.4 permanent
  no ip address of the http server
  no ip http secure server
  !
  !
  SSH_IN extended IP access list
  permit tcp host 192.168.52.2 any eq 22 log
  permit tcp 192.168.10.0 0.0.0.255 any eq 22 log
  permit tcp host 192.168.17.18 any eq 22 log
  any eq 22 host tcp 192.168.0.1 newspaper permit
  permit tcp host 192.168.0.2 any eq 22 log
  permit tcp host 192.168.0.3 any eq 22 log
  permit tcp host 192.168.0.5 any eq 22 log
  deny ip any any newspaper
  !
  !
  connection of the banner ^ C
  W A R N I N G
  THIS IS A PRIVATE COMPUTER SYSTEM.
  This computer system, including all related equipment, network devices
  (specifically including Internet access), are provided only for
  authorized used.
  All computer systems may be monitored for all lawful, including purpose
  to ensure that their use is authorized, for management of the system, to
  facilitate protection against unauthorized access, and to verify security
  survival and operational security procedures.
  Monitoring includes active attacks by authorized personnel and their
  entities to test or verify the security of the system. During the surveillance,.
  information may be examined, recorded, copied and used for authorized
  purposes.
  All information, including personal information, placed on or sent over
  This system may be monitored. Uses of this system, authorized or
  unauthorized, constitutes consent to monitoring of this system.
  Unauthorized use may subject you to criminal prosecution. Evidence of
  any unauthorized use collected during monitoring may be used for
  administrative, criminal or other adverse action. Use of this system
  constitutes a consent to monitoring for these purposes.
  ^ C
  !
  Line con 0
  session-timeout 60
  exec-timeout 60 0
  Synchronous recording
  local connection
  line vty 0
  access-class SSH_IN in
  local connection
  line vty 1 4
  access-class SSH_IN in
  opening of session
  line vty 5 15
  access-class SSH_IN in
  opening of session
  !
  NTP 198.60.73.8 Server
  Event Manager environment suspend_ports_config flash: / susp_ports.dat
  Event Manager environment suspend_ports_days 7
  Event Manager user Directorystrategie "flash: / policies /.
  Event manager session cli username "stw".
  political event manager sl_suspend_ports.tcl
  political event manager tm_suspend_ports.tcl
  SaveRunConfig event manager applet
  cron cron-event timer entry ' 0 0 * * ".
  command action 1.0 cli 'enable '.
  cli 2.0 action command "RAM".

  Well, I totally forgot the keyword "log" and NAT:

  Cisco IOS NAT support ACLs with a keyword "log"?

  A. When you configure Cisco IOS NAT translation dynamic NAT, an ACL is used to identify the packages that can be translated. The current NAT architecture does not support the ACL with a keyword "log".

  http://www.Cisco.com/c/en/us/support/docs/IP/network-address-translation...

  If your problem is not the mask with joker, but the command "log"...

• How to for NAT internal IP address so it only gets teeth when you go to a particular destination and is also the United Nations concerns

  Hi all

  I have the following 2 sites. A branch, a data center.  The two race NPA 8.3.

  (192.168.120.1 (L3SW) - ASA)-PUBLIC INTERNET-(202.xxx.xx.242) ASA

  DATA CENTER                                                                           BRANCH

  I need 192.168.120.1 to be able to do a ping 202.xxx.xx.242 for the purpose of the SLA, which means that I need to NAT to break the internet. However, I also need to be able to SSH to 192.168.120.1 during several VPN tunnels to other branches on private subnets.

  How can I configure a NAT to my ASA rule so that 192.168.120.1 tries to talk to 202.xxx.xx.242, NAT 192.168.120.1 to the internet, but all other destinations than 192.168.120.1 should talk to the service (IE LAN via VPN), do not NAT?

  Hello Dean,

  I would recommend a NAT twice basically is the same terminology as a 'political NAT', you can specify that your source host will be translated to some IP only when it is addressed to some destination or destinations, so, basically, you can create a network of the object with the IP address of the source, another network object with the public IP address you want to use to translate the 192.168.x.x address and then click the destination network object, so it will be like this:

  network of the IP_192.168.120.1 object

  Home 192.168.120.1

  network of the TRANSLATED_IP_FOR_192.168.120.X object

  host 99.99.99.99 -> an example

  Network IP_202.XXX of the object. XXX.242

  202.xxx of the host. XXX.242

  NAT static IP_192.168.120.1 TRANSLATED_IP_FOR_192.168.120.X destination (indoor, outdoor) static source IP_202.XXX. XXX.242 IP_202.XXX. XXX.242

  In this way traffic that comes 192.168.120.1 form through a VPN tunnel, it will not be matched this NAT statement, since this statements NAT says that he will only translated when switching to the 202.XXX. Address xxx.242, now you can run a package tracer and see how it goes,

  Please note and hides as correct this answer if it helped you, keep me posted!

  Thank you

  David Castro,

• NAT with VPN

  Hello friends

  I m noob with firewall and I create a VPN site-to-site with a customer with the tracking information:

  My site:

  10.204.x.x/24

  10.69.0.0/24

  others

  Customer site:

  172.30.20.0/24

  But my site 10.69.0.0 network is an internal network of the client, that they asked me to do a NAT when the network 10.69.0.0 will 172.30.20.0 them must go out with the IP 172.30.100.0.

  Anyone know what can make it work configurations?

  Thank you

  Marcio,

  You can use a political static NAT:

  network of the LAN object - 10.69.0.0

  subnet 10.69.0.0 255.255.x.x

  network object obj - 172.30.100.0_nat

  172.30.100.0 subnet 255.255.255.0

  network object obj - 172.30.20.0

  172.30.20.0 subnet 255.255.255.0

  NAT (inside, outside) source static LAN - 10.69.0.0 obj - 172.30.100.0_nat destination static obj - 172.30.20.0 obj - 172.30.20.0

  -JP-

• NAT, ASA, 2 neworks and a VPN tunnel

  Hello. I have a following question. I am trying to establish a VPN tunnel to a remote network used to be connected to our via a VPN tunnel. The problem is that the previous tunnel their share has been created for the x.x.x.x our coast network which will serve no more time a month, but is currently still active and used. As I'm trying to get this VPN tunnel as soon as possible without going through all the paperwork on the other side (political, don't ask) is it possible to make NAT of the new network in the network x.x.x.x for traffic through the VPN tunnel.

  Something like this:

  new network-> policy NAT in old x.x.x.x fork on ASA-> VPN tunnel to the remote network using x.x.x.x addresses

  It is possible to add the new policy, but sometimes it can conflict with the former.

• Political process of selection ISAKMP

  Hi all

  I have a question about how political ISAKMP is chosen in a router. Router 1 and 3 are connected via IPSec VPN. Here are their ISAKMP policies:

  R1 #sh run | s policy
  crypto ISAKMP policy 10
  BA aes 256
  preshared authentication
  Group 2
  crypto ISAKMP policy 20
  BA 3des
  preshared authentication
  Group 2

  ==========================

  R3 #sh run | s policy
  crypto ISAKMP policy 1
  BA 3des
  preshared authentication
  crypto ISAKMP policy 10
  BA 3des
  preshared authentication
  Group 2
  crypto ISAKMP policy 20
  BA 3des
  preshared authentication
  Group 2
  crypto ISAKMP policy 30
  BA 3des
  preshared authentication
  Group 2
  crypto ISAKMP policy 40
  BA aes 256
  preshared authentication
  Group 2
  life 1800
  crypto ISAKMP policy 50
  BA aes 256
  preshared authentication
  Group 2

  I have no problem with the phase 2. However, on the phase 1 AES/SHA is chosen - but with the life of 1800.

  R3 #sh crypto isa in detail its
  Code: C - IKE configuration mode, D - Dead Peer Detection
  NAT-traversal - KeepAlive, N - K
  T - cTCP encapsulation, X - IKE Extended Authentication
  PSK - GIPR pre-shared key - RSA signature
  renc - RSA encryption
  IPv4 Crypto ISAKMP Security Association

  C - id Local Remote I have VRF status BA hash Auth DH lifetime limit.

  1001 23.0.0.3 12.0.0.1 aes ACTIVE sha psk 2 00:29:54
  Engine-id: Conn-id = SW:1

  IPv6 Crypto ISAKMP Security Association

  Beyond output is taken as soon as the tunnel is built - and that's how I know that policy with the life expectancy of 1800 is chosen. There are times when 3des is selected as well:

  R3 #sh in detail its crypto isakmp
  Code: C - IKE configuration mode, D - Dead Peer Detection
  NAT-traversal - KeepAlive, N - K
  T - cTCP encapsulation, X - IKE Extended Authentication
  PSK - GIPR pre-shared key - RSA signature
  renc - RSA encryption
  IPv4 Crypto ISAKMP Security Association

  C - id Local Remote I have VRF status BA hash Auth DH lifetime limit.

  1001 23.0.0.3 12.0.0.1 ACTIVE 3des sha psk 2 23:57:21
  Engine-id: Conn-id = SW:1

  IPv6 Crypto ISAKMP Security Association

  I want to use AES - 256 with SHA value and default lifetime, which is the policy of leading in R1. Is that what I missed in the config to make the selection of the more deterministic strategy? Thank you.

  Haris

  Hi Haris,

  The behavior is correct. If R1 initiates the connection, it sends the first isakmp policy i.e. AES/SHA/Grp-2/Pre-share/service life and once it reaches R3, R3 will analyse the policies configured for her and will scan from 10 to 50. It will get a game on 40. If AES with SHA is selected.

  When R3 is initiator, 3DES/SHA/Grp2/Pre-share/life expectancy will be the first condition in the list (as it is the first in the list with 10; political policy 1 is incomplete). When the same will be analyzed on R1 for the game, it will get political game 20.

  Now, you want AES/SHA/group2/Pre-share to be selected each time, then on R3, create a strategy with the lowest number.

  For ex.

  crypto ISAKMP policy 1
  BA aes 256
  preshared authentication
  Group 2
  life 1800
  sha hash

  When you apply this command, it will remove the isakmp policy 1 but it won't make any difference because that isakmp policy 1 is incomplete. Please try this and tell me if this solves your problem.

  Thank you

  Vishnu

• Double balancing while NAT is based on the load ISP

  Please send me an example configuration for dual ISP load balancing while NAT is running.

  ollyahmed,

  If you are looking specifically for a router, then the following configuration would be good.

  There is a quick need to change the configuration depending on the type of configuration you use, I mean (QOS policy, follow-up (ip SLAs) and route directions.

  version 15.2
  horodateurs service debug datetime msec

  Log service timestamps datetime msec

  no password encryption service

  IP cef

  !

  Authenticated MultiLink bundle-name Panel

  !

  track 1 accessibility of als 1 ip

  !

  Track 2 accessibility of ALS 2 ip

  !

  class-map correspondence Skype

  Skype Protocol game

  !

  Skype-political policy-map

  class Skype

  DSCP ef Set

  !

  interface GigabitEthernet0/0

  Description of the IP LAN 10.0.0.1 255.255.254.0 nat ip in ip virtual-reassembly speed automatic duplex

  !

  interface GigabitEthernet0/1

  TASK description

  address IP 213.192.65.106 255.255.255.252 ip access-group 101 in ip nat outside ip virtual-reassembly in crypto of automatic speed auto two-sided map political GLIWICE-map service entry out of service-policy Skype-Skype-strategy

  !

  interface GigabitEthernet0/2

  Description of the "Wit-NET" 0030.4f61.5521 193.107.215.133 mac address ip address 255.255.255.224 ip access-group 101 in ip nat outside ip virtual-reassembly speed automatic duplex
  !

  IP default-gateway 213.192.65.105 ip forward-Protocol nd

  IP nat inside source map route nat_isp1 interface GigabitEthernet0/1 overload ip nat inside source route nat_isp2 interface GigabitEthernet0/2 overhead map

  IP nat inside source static tcp 10.0.0.24 777 193.107.215.133 777 extensible ip nat inside source static tcp 10.0.0.2 1723 193.107.215.133 1723 extensible ip nat inside source static tcp 10.0.0.24 213.192.36.106 777 777 stretch
  ! - the more static routes has been omitted.

  Route IP default-network 213.192.65.105 ip 0.0.0.0 0.0.0.0 213.192.65.105 track 1

  IP route 0.0.0.0 0.0.0.0 193.107.215.129 track 2

  ALS IP 1

  echo ICMP - 213.192.65.105 source-interface GigabitEthernet0/1
  threshold frequency 2 1000 5 timeout

  IP SLA annex 1 point of life to always start-time now

  IP sla 2 icmp echo - 193.107.215.129 source-interface GigabitEthernet0/2 threshold 2 timeout 1000 frequency 5

  IP SLA annex 2 to always start-time life now

  !

  access-list 110 deny ip 10.0.0.0 0.0.1.255 10.0.100.0 0.0.0.255

  access-list 110 permit ip 10.0.0.0 0.0.1.255 ip 10.0.0.0 allow any access list of 190 0.0.1.255 10.0.100.0 0.0.0.255

  SPECIAL route-map permit 10
  corresponds to the IP 110

  is the interface GigabitEthernet0/1!

  map of route track_isp permit 10 match ip address 101 game interface GigabitEthernet0/1 set ip next-hop 213.192.65.105

  !

  track_isp allowed 20 match ip route map address 102 game interface GigabitEthernet0/2 set ip next-hop 193.107.215.129! map of route nat_isp2 permit 10 match ip address 110 game interface GigabitEthernet0/2! map of route nat_isp1 permit 10 match ip address 110 game interface GigabitEthernet0/1! -See more at: https://supportforums.cisco.com/discussion/11710646/dual-isp-connection-...

• Can I use the address of the public by peers as PAT or NAT address also?

  With the help of an ASA 5505, I've only private local network IPs and a public IP address from my ISP for the address of the peer. Can I use this same internal peers like PAT or NAT for my private IP local IP address?  Remote VPN location policy is to not allow IP addresses private on their local network, so that they want public addresses to me. If possible, could you please show me an example of a config 5505 simple using the following IP addresses? (I need not the IPSec configuration, only the ACL/NAT config)

  I have four hosts who need to access a device at the remote location via an IPSec tunnel.  They are:

  local hosts:

  192.168.2.10, 11, 12, 13

  Say my public address peer is 205.188.15.34 and the remote peer is 175.10.144.52

  remote host:

  168.12.10.6

  Thanks for any help.

  jkeeffe wrote:
  Using an ASA-5505, I only have private IPs on the local LAN and one public IP address from my ISP for the peer address. Can I use that same peer IP address as a PAT or NAT for my internal local private IPs?  The remote VPN location policy is to not allow private IP address on to their local network, so they want public addresses from me. If that is possible, could you please show me a simple 5505 config example using the following IPs? (I don't need the IPSec config, only the ACL/NAT config)
  I have four hosts that need to access a device at the remote location via an IPSec tunnel.  They are:
  local hosts:
  192.168.2.10, 11, 12, 13
  Say my public peer address is 205.188.15.34 and the remote peer is 175.10.144.52
  remote host:
  168.12.10.6
  thanks for any help.
  

  Yes you can do it.

  the localhosts object-group network

  the object-network 192.168.2.10 host

  host of the object-Network 192.168.2.11

  etc...

  list the host 168.12.10.6 ip object-group localhosts allowed VPN access

  NAT (inside) 1 VPN access list

  Global 1 interface (outside)

  Crypto-map list would then look like this-

  VPNTRAFFIC ip host 205.188.15.34 access list permit 168.12.10.6

  One thing to note. The NAT example above is political NAT IE. If the source is-> 13 192.168.2.10 and the destination is 168.12.10.6 then the source to the public IP 205.188.15.34 NAT. However you may already have something like this in your config file-

  NAT (inside) 1 0.0.0.0 0.0.0.0

  Global 1 interface (outside)

  That is to say. you're natting all your addresses private to the public interface address for internet access in general. If you don't have that then there is no need to do NAT policy and you can't miss those lines that source addresses will be Natted anyway.

  the localhosts object-group network

  the object-network 192.168.2.10 host

  host of the object-Network 192.168.2.11

  etc...

  
  

  list the host 168.12.10.6 ip object-group localhosts allowed VPN access

  
  

  NAT (inside) 1 VPN access list

  Global 1 interface (outside)

  Jon

• Asymmetric NAT rules

  I am trying to configure another ipsec VPN group and political.  So far, I can communicate with her, and I can ping the ASA 5505, but nothing else inside.  The funny this is that I have another configuration group and the policy that works very well.  I tried to imitate him, but I can't understand what I'm doing wrong.  I get this error in the log:

  Asymmetrical NAT rules matched for flows forward and backward; Connection for icmp src, dst outside: 10.4.71.104 inside: 10.4.70.2 (type 8, code 0) rejected due to the failure of reverse NAT.

  A network diagram is attached.  Thanks for your help.

  Andy,

  Yes 8.3 makes a difference

  Well I can suggest a few ways out of it.

  And that's what you need to add... kind of nat provides previous versions.

  NAT (inside, all) source static obj - 10.4.70.0 obj - 10.4.70.0 destination static obj - 10.4.71.0 obj - 10.4.71.0

  Edit: fixed IP addresses. If 10.4.70.0/24 is local and remote 10.4.71, you need to add an exemption here.

• ASA Configuration of VPN Site to Site - NAT issues

  Greetings,

  I am responsible to configure a VPN connection from site to site to a business partner in which I want to firstly NAT to my internal IP to a public IP address and then send it through the tunnel, and vice versa when they try to access my servers I want to get to them through the external IP address.  Here's what I think I do, but I was wondering what were the thoughts of the community.

  All of the IP addresses represented below are fictitious.

  Internal servers Public IP address         

  10.50.220.150 208.180.170.182

  10.50.220.151 208.180.170.183

  10.50.220.152 208.180.170.184

  Local peer IP: 208.180.254.29

  Distance from peer IP: 207.190.218.31

  Local network: 208.180.170.0/24

  Remote network: 207.190.239.0/24

  From my understanding, NAT occur before being sent to a tunnel, or to the internet, etc, so the configuration that I think I need is the following:

  NAT (inside) 0 access-list sheep

  NAT (inside) 2 10.50.220.150

  NAT (inside) 3 10.50.220.151

  NAT (inside) 4 10.50.220.152

  Global 2 208.180.170.182 (outside)

  overall 3 208.180.170.183 (outside)

  Global 4 208.180.170.184 (outside)

  IP 208.180.170.0 allow Access-list extended sheep 255.255.255.0 207.190.239.0 255.255.255.0 (do I still need this since coordinated to a public IP address still?)

  access-list s2s client scope ip 208.180.170.0 allow 255.255.255.0 207.190.239.0 255.255.255.0

  Route outside 207.190.239.0 255.255.255.0 207.190.218.31

  card crypto off peers set 1 207.190.218.31

  Crypto card outside 1 correspondence address s2s-customer

  [... rest of the configuration failed..]

  That look / her right? If this isn't the case, please advise.

  Thank you.

  Yes.

  PAT (nat/global) will take care of outgoing and static traffic will take care of incoming traffic.

  You can create political NAT as well to handle this traffic.

  Federico.

• Understand the NAT translation with route map

  Hello

  I try to configure the server EZVPN on SAA and EZVPN client on router 881. I found on the documentation to the NAT translation on the client side

  My confusion is that I should use the deny on the access list statement? If anyone can explain this, enjoy it.

  IP nat inside source overload map route EzVPN1 interface FastEthernet4

  access-list 103 deny ip 192.168.3.0 0.0.0.255 192.168.2.0 0.0.0.255
  access-list 103 allow ip 192.168.3.0 0.0.0.255 any

  allowed EzVPN1 1 route map
  corresponds to the IP 103

  Hello

  So that's the explanation for the statement "denied" on the ACL for NATing.

  Based on the config, 192.168.3.x here is the network behind your 881 and 192.168.2.x is the network behind the ASA. Let's suppose you're trying to install between 192.168.2.10 and 192.168.3.10. When this package is delivered to the 881, it checks first the characteristics of penetration on the incoming interface (such as the ACL, political, policy-services, etc.) and before checking the 'IPSEC security associations", it checks the NAT configuration.

  Now, your IPSec security association will specify for 192.168.2.x 192.168.3.x traffic to be encrypted and then sent. If we do not have the declaration of 'decline' in the ACL, the 881 will be NAT incoming packets and then the IP source in the package will get changed the IP address of the interface of SA4.

  This match is no longer the configuration of IPSEC SA and therefore not get encrypted. Therefore, we must have the statements 'decline' to ensure that VPN traffic is not coordinated and is therefore correctly.

  Hope this helps!