PIX - static NAT problems

Similar Questions

• Static NAT problem with PIX501

  Hi all

  We have problems with our PIX firewall. We have configured PIX 501 with static NAT for our Web server. Here's the running configuration.

  6.3 (4) version PIX

  interface ethernet0 car

  interface ethernet1 100full

  ethernet0 nameif outside security0

  nameif ethernet1 inside the security100

  pixfirewall hostname

  domain ciscopix.com

  fixup protocol dns-length maximum 512

  fixup protocol ftp 21

  fixup protocol h323 h225 1720

  fixup protocol h323 ras 1718-1719

  fixup protocol http 80

  fixup protocol rsh 514

  fixup protocol rtsp 554

  fixup protocol sip 5060

  fixup protocol sip udp 5060

  fixup protocol 2000 skinny

  fixup protocol smtp 25

  fixup protocol sqlnet 1521

  fixup protocol tftp 69

  names of

  access-list 101 permit tcp any host x.x.x.26 eq www

  access-list 101 permit tcp any host x.x.x.26 EQ field

  access-list 101 permit udp any host x.x.x.26 EQ field

  pager lines 24

  Outside 1500 MTU

  Within 1500 MTU

  IP address outside x.x.x.28 255.255.255.248

  IP address inside 192.168.90.1 255.255.255.0

  alarm action IP verification of information

  alarm action attack IP audit

  location of PDM 192.168.90.0 255.255.255.0 inside

  history of PDM activate

  ARP timeout 14400

  Global 1 interface (outside)

  NAT (inside) 1 0.0.0.0 0.0.0.0 0 0

  static (inside, outside) x.x.x.26 192.168.90.3 netmask 255.255.255.255 0 0

  Access-group 101 in external interface

  Route outside 0.0.0.0 0.0.0.0 x.x.x.25 1

  Route inside 192.168.1.0 255.255.255.0 192.168.90.2 1

  Timeout xlate 03:00

  Timeout conn 01:00 half-closed 0:10:00 udp 0: CPP 02:00 0:10:00 01:00 h225

  H323 timeout 0:05:00 mgcp 0: sip from 05:00 0:30:00 sip_media 0:02:00

  Timeout, uauth 0:05:00 absolute

  GANYMEDE + Protocol Ganymede + AAA-server

  AAA-server GANYMEDE + 3 max-failed-attempts

  AAA-server GANYMEDE + deadtime 10

  RADIUS Protocol RADIUS AAA server

  AAA-server RADIUS 3 max-failed-attempts

  AAA-RADIUS deadtime 10 Server

  AAA-server local LOCAL Protocol

  Enable http server

  http 192.168.90.0 255.255.255.0 inside

  No snmp server location

  No snmp Server contact

  SNMP-Server Community public

  No trap to activate snmp Server

  enable floodguard

  Telnet timeout 5

  SSH timeout 5

  Console timeout 0

  Terminal width 80

  : end

  the problem is the configuration, we are unable to access the web server both inside and outside the network.

  All input will be greatly appreciated.

  Kind regards

  udimpas

  activate icmp backtrace and then ping the x.x.x.26 of the internet. the output should be as below:

  3363574:-out ICMP echo request: ID = 21834 seq = 1202 length = 80

  3363575: ICMP echo request: external untranslating: inside: 192.168.90.3

  3363576: ICMP echo-reply from the inside: 192.168.90.3 ID = 21834 seq = 1202 length = 80

  3363577: response to ICMP echo -: translate inside: 192.168.90.3 out:

  by doing this, you can 1. Check the nat 2. If the server responds to the internet.

  do not forget to allow incoming icmp:

  access-l 101 permit icmp any one

• Tunnel + static NAT problem

  Hello:

  I configured a Pix501 to establish a tunnel from site to site with a 1710 in the central site and it works fine, except for a small problem. The central site hosts a Domino server that must have an entry static nat to allow servers on the internet to deliver mail to it. So, the problem is that even though I created a road map to avoid NAT in site traffic to site, the static entry seems a priority on the road map and the mail server is always using a NAT. So the SOHO cannot access to him. What can I do to fix this?

  I need to use an entry like this:

  IP nat inside source static tcp 172.16.34.22 1352 200.212.0.66 1352

  Any help?

  Thank you

  You must do the following:

  (1) create a loopback interface with an ip subnet that you are not anywhere in your network. Leave; s 10.10.10.0/30 say:

  loop int 0

  IP 10.10.10.1 255.255.255.252

  (2) create a roadmap to match traffic from the 172.16.34.22 Server destination and from the other side of the tunnel

  access-list 101 permit ip 172.16.34.22 host 192.168.0.0 255.255.255.0

  permissible static route map 10

  corresponds to the IP 101

  set ip 10.10.10.2 jump following (some address to the loopback interface)

  (3) implementing the road map inside the interface of the router where you have the server

  inter e0/0

  Static IP policy route map

  That's all

  Hope that helps

  Jean Marc

• Static nat problem on ASA (v8.2)?

  Tring to add a new rules static nat, but it seems that I have a not able to do

  Public IP 10.10.10.10

  20.20.20.20 inside the LAN IP address

  try adding:

  FW (config) # static (inside, outside) tcp 10.10.10.10 https 20.20.20.20 https netmask 255.255.255.255

  ERROR: mapped address conflict with existing static

  inside: 20.20.20.20 outside: 10.10.10.10 netmask 255.255.255.255

  The rule with the same public IP already existing, but pointing to the different internal LAN IP address:

  static (inside, outside) 10.10.10.10 20.20.20.21 netmask 255.255.255.255

  Please advice how to solve this problem.

  Thank you!

  Hi Vuèko,

  Please change your existing static nat to a particular port instead of letting it as ip to ip nat.

  "static (inside, outside) 10.10.10.10 20.20.20.21 netmask 255.255.255.255".

  And then you can add second static nat to a different IP address (i.e. within the intellectual property) and it will take it and it should work.

  Thank you

  Rizwan Muhammed.

• PIX 501 PPPoE w / static NAT loss of connectivity

  I have a {should} installation very simple. PIX 501 with PPPoE on the external interface, 3 inside customers using PAT and 1 inside the client I am trying to use an address mapping static on permit communications with this host from the outside using a particular service. I did a lot of these before where there was an ADSL router in front of the PIX, but this is the first where I've used the PIX as the PPPoE client. When I use the static NAT for the single host it loses all connectivity beyond the PIX outside interface. When I get rid of the static mapping, through PAT very well. I spent many hours troubleshooting and control a lot of obvious things, but I am at a loss right now... unless it could be a problem with the IP address that has been assigned by the ISP for use with static NAT. Any thoughts on this would be greatly appreciated.

  Thank you

  Sorry, in your case that static would look like this because of the dynamic IP.

  static (inside, outside) 23 interface 10.1.1.1 23 netmask 255.255.255.255

  Daniel

• PIX + Rotary static NAT to load balance?

  You can load balance of static behind a PIX with nat servers as you can do it on a router cisco (rotating)?

  * If Yes, someone at - it had a link to an example?

  Hakuna Mete.

  Hello Hakuna,

  Unfortunately, this is not possible on the PIX. Sorry!

  Renault

• 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

• NAT problem

  Hi Experts,

  One of my office have Cisco ASA 5510 with ios 8.4 (5). Everything is configured and works very well except the static NAT. I have a public IP block, I used to set up static NAT.  The internal server that is configured with the static NAT does not receive internet or anything. When I removed the static NAT, the internet is to learn (with the WAN IP interface). The server is placed in the DMZ. I left the server but it does not work.

  Kind regards

  MARTIN

  Hello

  In your case the configuration format static NAT for the server would be

  network of the object

  This would bind the local IP address of the public IP configured on the command "nat" . This means that outgoing connections would also use this public IP address. If you had a static configuration similar PAT already then you wouldn't really need that UNLESS you change the mapped/local port in the "nat" command.

  But set up static NAT would mean already that he would cancel the PAT Dynamics for outbound connections from this server. Naturally, there is a small chance according to your current configuration of NAT complete even this static NAT can be overridden, but I doubt it. If the above "packet - trace" is intended for the DMZ server in question then there should be no problem.

  -Jouni

• 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 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.

• Static NAT & DMVPN Hub

  Hello

  I don't think that will be a problem DMVPN supports the rays behind NAT devices, but I anticipate change my network for reasons of security and redudancy autour and putting a pair of ASA firewalls on my Internet collocation.  Right now I have a DMVPN race 3845, NAT & ZBFW.  I'm going to remove the ZBFW and move the NAT to the ASA, leaving only the DMVPN hub and routing.  If I create a static NAT mapping on my ASA to point to the DMVPN hub that will work?

  I think it will be, but I just wanted to be 110% sure.

  Thank you!

  Hi Brantley,

  DMVPN with static NAT on the hub is supported in the installer. Just be awear it there are limits.

  1, all DMVPN router, hub and spokes must be running at least 12.3(9a) and 12.3 (11) T code.

  2, must use ipsec transport mode.

  3, so need dynamic tunnel talk to rays, hub should work at least 12.3 (13), 12.3 (14) T and 12.3 (11) T3 code.

  See the configuration guide

  http://www.Cisco.com/en/us/docs/iOS/sec_secure_connectivity/configuration/guide/sec_DMVPN_ps6350_TSD_Products_Configuration_Guide_Chapter.html#wp1122466

  HTH,

  Lei Tian

• PAT on PIX vs NAT overload on router

  Better question practice...

  It's better to perform PAT through a NAT overload on a router bastion with a static on the PIX instruction or PAT on the PIX configuration uses a global IP address?

  Other alternatives?

  Example of router *.

  Router configuration

  IP nat FirstPAT 172.16.5.100 pool 172.16.5.100 255.255.255.0

  FirstPAT IP nat source list 10 overload

  access-list 10 permit 10.10.10.0 0.255.255.255

  PIX installation

  static (inside, outside) 10.10.10.0 10.10.10.0 netmask 255.255.255.0

  Example of PIX *.

  Global (Outside) 1 172.16.5.100

  NAT (inside) 1 0 0

  Thanks in advance for all the messages!

  In my opinion, there is no real compelling reasons to go with one idea on the other. Probably, I would lean towards leaving the PIX do NAT, but I could be swayed. The reason is that the PIX has essentially already been NAT (all back on the same address). But again, either should be good.

  A suggestion however if you went with overloading NAT on the router would be to do it with a map of the route as opposed to the example of access list you have. Something like this:

  IP nat FirstPAT 172.16.5.100 pool 172.16.5.100 255.255.255.0

  IP nat source map route nat FirstPAT overload

  route nat allowed 10 map

  access-list 10 permit 10.10.10.0 0.255.255.255

  This creates a NAT entry in the NAT table on the router.

  Good luck.

  Scott

• Static NAT question

  Hi Experts,

  Please help me on this. I enclose my diagram network with this post.
  My firewall is cisco ASA 5510 running with version 8.4 of software. I set up static NAT for all three servers (in the diagram, server 1,2 and 3). The question is, the static NAT works only with the first server. No trades do go to other two server (2 and 3). All servers are in the DMZ.

  When I remove the static NAT for Server 2 and 3, all traffic going to the server with the IP WAN address of the firewall, which means that the dynamic NAT works. I am also attaching the configuration file.

  (NOTE: NAT works for the 72.16.34.1 Server)

  Kind regards
  Martin

  HI San,

  Would you be able to try this workaround: -.

  https://supportforums.Cisco.com/blog/149276/asapix-proxy-ARP-vs-gratuito...

  I think the problem is with the IP addresses provided by the ISP.

  Thank you and best regards,

  Maryse Amrodia