Static and VPN on the external interface

Similar Questions

• VPN client and ssh to the external interface of the ASA

  Hello world

  I was testing clientless ssl in my lab at home.

  When you're connected via vpn without customer, I am able to ssh ASA outside interface, but when I use ssl vpn only I can't ssh to the external interface of the ASA.

  Need to figure out how I can ssh to the external interface of the ASA using clientless ssl vpn?

  Concerning

  MAhesh

  Mahesh,

  When you are on clientless SSL VPN to your customer is not limited routes of the Internet, isn't being NATted etc. If ASA is set to allow ssh from outside, then the VPN SSL without client user is no different from any other.

  A the user SSL VPN full tunnel can have any or all of these factors at play. One of them can cause the impossibility to access the ASA outside interface via ssh. I see the configuration to tell you which one (or more) is to blame.

• VPN SSL from the inside on the external interface

  Hi all

  First of all I know that I can activate the SSL interface inside, but that's not what I need or want.

  Scenario:

  Several interfaces and VLAN on the SAA (running 8.0.5).

  SSL VPN configured and enabled on the external interface.

  Need to know if it is possible to access the SSL VPN from other interfaces directly to the IP address external interface, something like her hairpin.

  Possible a solution (if it exists) with or without NAT (I have public IPs on some interfaces).

  This will be useful for users who can connect any interface (inside, outside, or other) and with only a DNS record, I'll be able to manage everything.

  Concerning

  PS: Is DNS doctoring an option? The tests that I have done this does not work.

  Post edited by: rcordeiro

  Hello

  Unfortunately, it is not possible. You cannot communicate with an ASA interface which is not directly connected through the firewall.

  Kind regards

  NT

• VPN; list of access on the external interface allowing encrypted traffic

  Hi, I have a question about the access list on the external interface of a router 836. We have several routers on our clients site, some are lan2lan, some are client2router vpn.

  My question is; Why should I explicitly put the ip addresses of the client vpn or tunnel lan to the access list. Because the encrypted traffic to already allowing ESPs & isakmp.

  The access list is set to the outgoing interface with: ip access-group 102 to

  Note access-list 102 incoming Internet via ATM0.1

  Note access-list 102 permit IP VPN range

  access-list 102 permit ip 192.123.32.0 0.0.0.255 192.123.33.0 0.0.0.255

  access-list 102 permit ip 14.1.1.0 0.0.0.255 any

  access-list 102 permit esp a whole

  Note access-list 102 Open VPN Ports and other

  access-list 102 permit udp any host x.x.x.x eq isakmp newspaper

  I have to explicitly allow 192.123.32.0 (range of lan on the other side) & 14.1.1.0 (range of vpn client) because if I'm not I won't be able to reach the network.

  The vpn connection is not the problem, all traffic going through it.

  As far as I know, allowing ESPs & isakmp should be sufficient.

  Can anyone clarify this for me please?

  TNX

  Sebastian

  This has been previously answered on this forum. See http://forums.cisco.com/eforum/servlet/NetProf?page=netprof&CommCmd=MB%3Fcmd%3Dpass_through%26location%3Doutline%40%5E1%40.ee9f970/0#selected_message for more details.

• Network for access to the external interface inside

  Hey,.

  I have an ASA5520 7.2 (1) I have a few probs with - which is something I struggle with that.

  I'm trying to hit a website of a host on the inside network that is actually hosted internally, but decides the static NAT would focus on the external interface of the firewall.

  Now I can see the TCP built, translation occurring at a port on the external interface, this port high dialogue to one of the static electricity would be addresses on the external interface, then that's all. There are no more entries in my journal in regards to the connection and I get not syn on the internal web server is so the connection is not back in.

  IP address outside 222.x.x.9 255.255.255.248

  IP address inside 192.168.87.1 255.255.255.0

  Static NAT to Web servers: -.

  public static 222.x.x.10 (Interior, exterior) 192.168.87.5

  access lists access... :-

  list of allowed inbound tcp extended access any host 192.168.87.5 eq http

  Access-group interface incoming outside in

  Everything works fine when creating a global internet address - just not when address from inside and dynamic PAT is performed to the original address.

  Here's a capture session by using the following access to capture list inside and outside interfaces simultaneously

  permit for line of web access-list 1 scope ip host 222.222.222.10 all

  web access-list extended 2 line ip allow any host 222.222.222.10

  on the INSIDE interface (nothing is connected to the outside) (ip addresses have been replaced by nonsense) - but address 222 is would take into account the interface static and the other is on the internal network.

  316: 19:14:02.900206 192.168.87.10.2275 > 222.222.222.10.80: S 2029971541:2029971541 (0) win 64512

  317: 19:14:05.973185 192.168.87.10.2275 > 222.222.222.10.80: S 2029971541:2029971541 (0) win 64512

  192.168.87.10 is my client is trying to connect

  Someone of any witch hunt, which is stop this function work?

  All networks are directly attached and there is no route summary ancestral anywhere.

  I hope you guys can help!

  Concerning

  Paul.

  To my knowledge the ASA supports only hairpining on a VPN tunnel. The security apparatus does not allow traffic that is sent to an interface to go back in the direction of what she received.

• Cisco ASA 5510 L2L VPN on the backup interface

  OK, here is what I have and I even if I knew how to do this, but it has not worked for me.  I hope someone out there can help you.

  I have an ASA 5510 running 8.4 with double configuration of ISPs on 2 different interfaces: outside (primary), backup (backup).  I also have a site to site VPN ASA another in another city.  The VPN is now configured on the external interface and works very well.  What I wanted to do, is to make the VPN running on backup interface only.

  So, I changed the card encryption on the remote side to use the backup interface IP and created a tunnel-group for her.  Then, I created a map encryption for backup interface and activated ikev1 on it.  The default route is configured to use the external interface, so I created a static route that routes traffic destined for the external interface of the remote side to the backup interface default gateway.  I can get to establish tunnels, but no traffic passes through them.  I have however while I need a NAT device for the tunnel traffic to I created a NAT so but still no transmitted traffic.  I tried the packet - trace and he said: the traffic was allowed and show its crypto ipsec command, I see the configuration of the tunnel, but no traffic will pass through it.  Can anyone help?

  Ben,

  you use a code to version 8.4, I recommend starting by removing the config NAT statements at both ends. This version does not have the NAT and control, and if you don't need... I've seen instances with 8.4 (3) where a NAT even though apparently correct was causing not to pass through the traffic.

  Site A:

  NAT (inside, backup) source static obj-SiteALAN obj-SiteALAN static obj-SiteBLAN obj-SiteBLAN

  Site b:

  NAT (inside, outside) source static obj - 192.168.5.0 obj - 192.168.5.0 destination static obj - 192.168.3.0 obj - 192.168.3.0

  If possible, you should increase your AES encryption, but this is a personal point of view and should not stop the traffic through the links. You should be able to see the counters for the data transmitted / received are these incrementing?

  Do you have the ACLs that are from the inside to the outside and internal interface to the Interface of backup (duplicated.

  In this model, the control is the routing.

  Best regards

  Ju

  http://helpamunky.WordPress.com/

• Telnet on PIX with the external interface

  Is there a way to telnet in PIX Firewall through the external interface?

  SSH is a valid method to access the site, but I wonder if there is another way to do it. PDM is another tool for access and modification of the configuration.

  Any help will be useful.

  Best wishes

  Onur

  I'm pretty sure that Telent directly to the external interface of a PIX is not available. It is such a big security risk that it is not offered as an option.

  SSH is a much better way to go (even if it's only SSH1).

  You can probably VPN in your network and Telnet from inside.

  Good luck

  Scott

• ASDM does not work in the external interface

  Hello

  I'm new to ASA. I have ASA 5510 and strives to enable ASDM access through the external interface. but is not working for me... not. I set up a public ip address on the external interface and activated the ssh and asdm. SSH works but asdm does not work. This is a test environment, so I have not yet set up an ACL.

  VPN-TEST # show version

  Cisco Adaptive Security Appliance Version 8.2 software (1)

  Version 6.2 Device Manager (1)

  Updated Wednesday, 5 May 09 22:45 by manufacturers

  System image file is "disk0: / asa821 - k8.bin.

  The configuration file to the startup was "startup-config '.

  VPN TEST up to 4 hours and 33 minutes

  Material: ASA5510, 1024 MB RAM, Pentium 4 Celeron 1600 MHz processor

  Internal ATA Compact Flash, 256 MB

  BIOS Flash Firmware Hub @ 0xffe00000, 1024 KB

  Hardware encryption device: edge Cisco ASA - 55 x 0 Accelerator (revision 0 x 0)

  Start firmware: CN1000-MC-BOOT - 2.00

  SSL/IKE firmware: CNLite-MC-Smls-PLUS - 2.03

  Microcode IPSec:-CNlite-MC-IPSECm-HAND - 2.04

  0: Ext: Ethernet0/0: the address is d0d0.fd1d.8758, irq 9

  1: Ext: Ethernet0/1: the address is d0d0.fd1d.8759, irq 9

  2: Ext: Ethernet0/2: the address is d0d0.fd1d.875a, irq 9

  3: Ext: Ethernet0/3: the address is d0d0.fd1d.875b, irq 9

  4: Ext: Management0/0: the address is d0d0.fd1d.8757, irq 11

  5: Int: not used: irq 11

  6: Int: not used: irq 5

  The devices allowed for this platform:

  The maximum physical Interfaces: unlimited

  VLAN maximum: 50

  Internal hosts: unlimited

  Failover: disabled

  VPN - A: enabled

  VPN-3DES-AES: enabled

  Security contexts: 0

  GTP/GPRS: disabled

  SSL VPN peers: 2

  The VPN peers total: 250

  Sharing license: disabled

  AnyConnect for Mobile: disabled

  AnyConnect for Linksys phone: disabled

  AnyConnect Essentials: disabled

  Assessment of Advanced endpoint: disabled

  Proxy sessions for the UC phone: 2

  Total number of Sessions of Proxy UC: 2

  Botnet traffic filter: disabled

  This platform includes a basic license.

  VPN-TEST # http see race

  Enable http server

  http 0.0.0.0 0.0.0.0 outdoors

  VPN-TEST # display running asdm

  ASDM image disk0: / asdm - 621.bin

  enable ASDM history

  Could someone please help me know what Miss me?

  Kind regards

  Praveen

  That's it, please add any combination of encryption by using the command "ssl encryption" algorithms, please add them in one line next to each other, and you can use '? ' to check available combinations.

  Kind regards

  Mohammad

• How to get the ASA packets that come in and out on the same interface?

  Hi all

  How can I configure the ASA5520 routes the packets that come in and out on the same interface? I ve more than 1 network behind the camera of the SAA. It s separated by internal router. They can communicate with each other.

  I've seen it's PIX design problem. She applies to the platform of the ASA?

  Please advice.

  Thank you

  Nitass

  This golden rule remains immutable. the only exception is the vpn traffic. ASA for example (or pix v7) would act as a hub for traffic between two rays rediect vpn.

  regarding your question.

  Internet <-->asa <-->1 <-->lan router <-->lan 2

  assuming the host to lan 1 to asa as the gateway default, even asa has a static route to the internal router of the point for local network 2, the golden rule will reject this operation.

  one solution is to re - configure the dhcp on the LAN 1 scope and make the internal router as the default gateway; and the internal router has the asa as the default gateway.

• Access ASDM ASA on the external Interface

  We have three ASA5510s, each configured for ssh and http access to the Cel outside.  One of them has aaa users/passwords defined for both ssh and http.  I can access the ASA configured for aaa of the designated host allowed in the external interface normally using credentials of the aaa.  When I try to access one of the other two, they will refuse the enable login password.  The configured aaa ASA is version 8.2 with ASDM 6.21.  The other two are the two ASA version 7.0 with ASDM 5.07.  The ASA requires aaa is configured for https access?  How can I make these other two accept the ASDM login?  Thank you!

  If you do not have aaa then configured for ASSISTANT Deputy Ministers, you must use empty username and password enable.

  Also, you can use the "aaa authenticate http LOCAL console" and use a user/pwd to a private 15 user name to connect to the ASDM.

  To resolve what is a failure you can activate "debug http" and "debug aaa" on the SAA to see the reasons for which the user is rejected.

  I hope it helps.

  PK

• SSH to the external interface

  How to configure ssh on the external interface of the asa? I have defined an applied, external interface access list, but it did not work for some reason any

  Here is a list of access

  interface GigabitEthernet0/1

  nameif outside

  security-level 0

  IP 10.254.17.9 255.255.255.248

  !

  interface GigabitEthernet0/2

  No nameif

  security-level 100

  no ip address

  !

  interface GigabitEthernet0/3

  EIGRP 2008 description

  nameif eigrp

  security-level 100

  IP 10.40.50.65 255.255.255.252

  !

  interface Management0/0

  nameif management

  security-level 100

  IP 192.168.251.1 255.255.255.0

  management only

  !

  boot system Disk0: / asa821 - k8.bin

  passive FTP mode

  access-list 110 scope ip allow a whole

  NAT allowed ip extended access list a whole

  allow_ping list extended access permit icmp any any echo response

  allow_ping list extended access permit icmp any any source-quench

  allow_ping list extended access allow all unreachable icmp

  allow_ping list extended access permit icmp any one time exceed

  allow_ping list extended access udp allowed any any eq isakmp

  allow_ping list extended access allow esp a whole

  allow_ping ah allowed extended access list a whole

  allow_ping list extended access will permit a full

  allow_ping list extended access permit tcp any any eq ssh

  access-list extended ip allowed any one sheep

  icmp_inside list extended access permit icmp any one

  icmp_inside of access allowed any ip an extended list

  pager lines 24

  asdm of logging of information

  Outside 1500 MTU

  EIGRP MTU 1500

  management of MTU 1500

  no failover

  ICMP unreachable rate-limit 1 burst-size 1

  ICMP allow all outside

  don't allow no asdm history

  ARP timeout 14400

  Global 1 interface (outside)

  Access-group allow_ping in interface outside

  Can't say I've seen this before, but SSH is easy to do on the SAA.

  I recommend you to take out the first interface access list to see if that would be it.

  You have published only a partial section of the config, but make sure you have the SSH command with the address of the subnet that you connect from. Your config is no longer visible as I type this but try "SSH 0.0.0.0 0.0.0.0 outdoors. This allows all subnets access to the external interface. This command works as an access list to restrict connectivity to approved subnets. i.e. ' SSH 10.0.0.0 255.0.0.0 out "only allow hosts on the 10.x.x.x network to connect via SSH.

  Turn 'debug ssh' to see what errors are too.

  And, you can always remove your keys (related encryption rsa key) and rebuild their return (encryption key generate rsa 1024 mod gen). This will make your ssh client, I use PuTTY, think that this is a new feature and invites the OK to connect.

  Good luck.

  Kevin

• WebVPN and anyconnect on the same interface

  Hello!!

  We have ASA 5520 firewall running with code.9.1 (2). We already have webvpn running on the firewall and has active users to use it. Now, the client came with a new requirement to configure firewalls on the same anyconnect. We have installed VPN more premium license.

  (1) is it possible to enable webvpn and anyconnect on the same interface. If Yes, what are the aspects we must consider to allow them both on the same interface?

  (2) how much webvpn and anyconnect vpn licenses should I do with my premium lincense?

  Please help on this.

  shver attached for reference.

  Best regards

  Sri

  Your peers licenses AnyConnect Premium gives you the right to access SSL VPN without customer and focused on the customer.

  Licensing is based on the concurrent users so regardless of the simultaneous dosing will work - as long as the number of connected does not exceed 100.

  Your site to site VPN IPsec does not count against this permission, but is rather against "Other peer VPNS" which does not require a separate license and is limited by the capacity of the ASA equipment (750 on your platform).

• Change the IP address of the external Interface

  I need to change the IP address of the external interface remotely.  I have SSH in to the ASA plan and make a change.  I can't be there to make this change, since the site is out of State.  There will be problems?  The current configuration is

  interface Ethernet0/0
  nameif outside
  security-level 0
  IP 66.102.7.22 255.255.255.248

  The new IP address will be 66.102.7.18 255.255.255.248.  Also, is this the right syntax?

  interface Ethernet 0/0

  no address ip 66.102.7.22 255.255.255.248

  IP 66.102.7.18 255.255.255.248

  Thank you.

  Diane

  Diane,

  If you access the ASA via its public IP address on the external interface, and if you change this IP address, you will lose communication with the ASA.

  It's better if you can make the change from the inside.

  If you need to change remotely, you can change the IP address, and then try the SSH connection to the new IP address.

  However if a problem occurs, you cannot access the ASA.

  The syntax is correct.

  Federico.

• Secondary public network on the external interface

  We already have a range of public address configured on the external interface (213.XX. YY. ZZ/29). Our supplier we've assigned a new range of public addresses (62.XX. YY. ZZ/29).

  How can I configure this on the PIX?

  PS: as far as I know, the secondary addresses are not possible!

  Hello

  You don't need to configure anything on the PIX make you just as your ISP routes the new addresses to your PIX - then you can use the new address to what you like.

  Concerning

  Kim

• Can a VPN 3005 cause multiple IP addresses on the external interface?

  Nice day

  Can a VPN 3005 cause several IPS on an external interface?

  I expect to use it in an environment that has 2 ADSL connections to an internet service provider. For the sake of the exercise, we could call them ROUTER1 and ROUTER2.

  We have a few VPN we always want to spend by ROUTER1 and some VPN we always want going through ROUTER2.

  Is this possible?

  Thank you very much

  No, not possible, sorry.