VPN policy/S2S ASA 8.4 PAT Dynamics question

I'm preparing new ASA 5525 - x for a customer who has a multiple VPN S2S.  On some of the VPN connections, I need to do a political nat to translate some of their subnets to a unique IP address until he goes over the VPN S2S.  However, when I try to use a subnet, I get the following error:

Subnet cannot be used as sources mapped in the political dynamic nat.

This works very well on their old ASA which executes the code of 8.2.  I figured out, I can use a network range, but can not go over 65535 (or whatever it is) addresses in this range.  It is very annoying when they have several networks they want to allow through the VPN S2S.  Is anyway around of this or am I stuck the creation of a network for each subnet range?

TIA,

Dan

I guess you try NAT 10.0.0.0/8 to 172.28.80.5 when accessing the remote network.

If the above assumption is correct, here's what you need to set up:

NAT (inside, outside) source dynamic obj - 10.0.0.0 obj - 172.28.80.5 destination static remote-remote network

Tags: Cisco Security

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    define the profile of isakmp ISAKMP-SITE-B-DC

    match address IPSEC-VPN-ACL_SITE-B-DC

    !

    Crypto ipsec transform-set esp-aes - TRANS_SET-SITE-B-DC esp-sha-hmac

    tunnel mode

    !

    EXIT/ENTRY interface

    Description # BECAUSE RUN US DYNAMIC PROTOCOL BGP (in my case), no matter WHAT INTERFACE COULD BE THE If INPUT/OUTPUT, SO THESE IFs MUST ALSO HAVE THE CRYPTOMAP #.

    S2S - VPN crypto card

    !

    interface Loopback11

    Description # IPSEC TEST #.

    IP 255.255.255.255 [asr-ip-address]

    !

    !

    IPSEC-VPN-ACL_SITE-B-DC extended IP access list

    permit ip host [ASR-LAN-addresses] [ASA-LAN-addresses]

    !

    IP route vrf VPN [ASA-LAN-addresses] 255.255.255.x 8.8.8.8 global name GENERIC-IPSEC-CRYPTO-ROAD (ANYCAST) * the road here is for the traffic is encrypted, the next hop MUST be no recursive road *.

    !

    So now for my question:

    REALLY should be a route with a match on the other than a default route routing table?

    (because it does not work with a route that directs the default route, even when the recursive path pointing to the interface even spefic road made).

    is there any other way to do this? because to point the way to 8.8.8.8, means im my tunnels to be available on the availability of a course of 8.0.0.0 in the RIBS.

    help would be what enjoyed here guys!

    Why not let the router hide the complexity of administration using IPP?

    http://www.Cisco.com/en/us/docs/iOS-XML/iOS/sec_conn_vpnav/configuration/15-Mt/sec-Rev-RTE-inject.html#GUID-DEBFE993-16DF-4599-946A-1B7A42521C92

    The example is not perfect because of the connection point to point between two routers, but you can understand what IP address as the gateway.

    I suggest also entry of cryptographic cards, the new software. logical interfaces with tunnel protection is the way to go. The problem does not appear here.

  • The dynamic firewall application on the VPN Clients with ASA

    Hello

    I'll put up a Cisco ASA to complete the remote VPN client connections, but I want to assure you that the dynamic firewall is enabled on the client.

    I know it's possible with the VPN concentrator, but cannot see any documentation detailing that can be performed on an ASA.

    Anyone encountered this?

    Thank you

    James

    I believe you can use Group Policy settings to configure the firewall client.

    You can find more information about this feature in the migration to http://www.cisco.com/en/US/docs/security/asa/asa72/vpn3000_upgrade/upgrade/guide/migrate.htmlguide.

    Hope this helps.

    Andrea.

    Step 1 under Configuration > VPN > General > Group Policy Panel, select group policy in the table and

    Click on change. ASDM displays the Edit Group Policy dialog box.

    Step 2: click on the customer Firewall tab Figure 5-6 shows the firewall client options configured for this example:

    • Inherit-disabled (disabled)

    • The required Firewall Firewall setting

    • Type firewall Cisco Integrated Client Firewall

    Firewall policy-policy (CPP) pushed •

  • Darkness of 8.4 (1) vpn L2L filter ASA when you specify the Protocol and port

    Hi all - I've spent many hours trying to diagnose this and have read several discussions and the Cisco docs unsuccessfully...

    Situation: two sites running Cisco ASA 5520 on 8.4 (1) with L2L IPsec on the public internet between each of them. The configuration of IPsec and associated routing works as it should and we are able to pass traffic between networks private behind each device as expected. The problem occurs when you try to block sessions using a vpn-filter group policy configuration.

    Each site has 3 private subnets that are able to communicate correctly without the vpn-filter configuration. We want to restrict access to specific protocols, hosts, and ports between each network.

    SITE A: 10.10.0.0/18, 10.10.64.0/18, 10.10.128.0/18

    SITE B: 10.20.0.0/18, 10.20.64.0/18, 10.20.128.0/18

    When we apply a filter-vpn configuration which restricted access only two guests, as follows...

    SITE A: vpn_acl_x_x_x_x list extended access permit ip host 10.20.0.1 host 10.10.0.1

    SITE b: the ip host 10.10.0.1 allowed extended access list vpn_acl_x_x_x_x host 10.20.0.1

    ... the configuration works correctly. However, when we try to lock the configuration more far and specify the protocols and ports, as follows...

    SITE A: vpn_acl_x_x_x_x list extended access permit tcp host 10.20.0.1 host 10.10.0.1 eq 22

    SITE b: vpn_acl_x_x_x_x to the list of access permit tcp host 10.10.0.1 host 10.20.0.1 eq 22

    ... and then try to establish a SSH connection between 10.10.0.1 and 10.20.0.1 or vice versa, the package is stopped on the side of the SOURCE. ..

    Mar 22 11:58:01 x.x.x.x 22 March 2011 14:34:56: % ASA-4-106103: vpn_acl_x_x_x_x of the access list refused tcp to the user "" inside-data/10.10.0.1(59112)-> outside-iptrans/10.20.0.1(22) hit - cnt 1 first success [0xd8d1c1b4, 0 x 0]

    I would really appreciate it if someone could shed some light on what is wrong with this Setup.

    SOLUTION

    The ACE must be implemented on the source and the end of the tunnel destination to facilitate this configuration.

    EXAMPLE 1: allow SSH two-way communication between hosts on each network (SITE A can connect to SITE B, SITE B can connect to SITE A)...

    SITE A:
    

    access-list vpn_acl_x_x_x_x extended permit tcp host 10.20.0.1 host 10.10.0.1 eq 22
    

    access-list vpn_acl_x_x_x_x extended permit tcp host 10.20.0.1 eq 22 host 10.10.0.1
    

    SITE B:
    

    access-list vpn_acl_x_x_x_x extended permit tcp host 10.10.0.1 host 10.20.0.1 eq 22
    

    access-list vpn_acl_x_x_x_x extended permit tcp host 10.10.0.1 eq 22 host 10.20.0.1

    EXAMPLE 2: allow communication one-way SSH between hosts on each network (SITE A can connect to SITE B, SITE B is unable to connect to SITE A)...

    SITE A:
    

    access-list vpn_acl_x_x_x_x extended permit tcp host 10.20.0.1 eq 22 host 10.10.0.1
    

    SITE B:
    

    access-list vpn_acl_x_x_x_x extended permit tcp host 10.10.0.1 host 10.20.0.1 eq 22

    Very good and thank you for this post. Please kindly marks the message as answered while others may learn from your post. I think that you have started a very good discussion on vpn-filter for tunnel L2L.

  • Limit the bandwidth in the tunnel VPN on Cisco ASA

    Hello

    I have a site VPN tunnel to create with the local desktop client. I fear that the traffic in the tunnel in impacting the Internet bandwidth for the entire office. Is it possible to limit bandwidth on the speed VPN tunnel. I have attached a configuration that shows the configuration of the ASA at the local office.

    Any help would be much appreciate. I watched QoS mapping but it's hard to make sense.

    Thank you very much

    Kind regards

    Michael.

    The ASA supported QoS features are:
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    When traffic is higher than the maximum rate, the ASA removes the excess traffic. Policy defines also the largest single burst of allowed traffic.

    Example of font options:
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    Police hostname(config-pmap-c) # {exit | entry} to compliance rates [conform burst]
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    That is to say

    HostName (config) # class - police-class card
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    The configuration depends on the "this" base that you want to limit the connection.

    Federico.

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    I'm trying to set up my Cisco 5505 with AnyConnect VPN client VPN access.  Here is the relevant information of my config:

    interface Vlan2
    
    mac-address xxxx.xxxx.xxxx
    
    nameif outside
    
    security-level 0
    
    ip address A.A.A.A 255.255.255.240
    
    !
    
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    access-list outside_access_in extended permit tcp any host C.C.C.C eq https
    
    access-list outside_access_in extended permit tcp any host C.C.C.C eq ftp
    
    access-list outside_access_in extended permit tcp any host C.C.C.D eq https
    
    access-list outside_access_in extended permit tcp any host C.C.C.D eq ftp
    
    access-list outside_access_in extended permit tcp any host C.C.C.D eq www
    
    access-list outside_access_in extended permit tcp any host C.C.C.C eq smtp
    
    access-list outside_access_in extended permit icmp any any
    
    access-list outside_access_in extended permit tcp any host C.C.C.D eq ssh
    
    access-list outside_access_in extended permit tcp any host C.C.C.D eq 8080
    
    access-list outside_access_in extended permit gre any host C.C.C.C
    
    access-list outside_access_out extended permit ip any any
    
    access-list inside_access_in extended permit ip any any
    
    access-list inside_access_in extended permit ip any interface outside
    
    access-list inside_access_out extended permit ip any any
    

    access-group inside_access_in in interface inside
    
    access-group inside_access_out out interface inside
    
    access-group outside_access_in in interface outside
    
    access-group outside_access_out out interface outside
    

    webvpn
    
    enable inside
    
    enable outside
    
    svc image disk0:/anyconnect-win-2.4.1012-k9.pkg 1
    
    svc enable
    

    group-policy DfltGrpPolicy attributes
    
    dns-server value X.X.X.X
    
    vpn-tunnel-protocol IPSec l2tp-ipsec svc webvpn
    
    split-tunnel-policy tunnelspecified
    
    split-tunnel-network-list value
    
    address-pools value palm
    
    webvpn
    
      svc rekey time 30
    
      svc rekey method ssl
    
      svc ask enable default webvpn
    

    policy-map global_policy
    
    class inspection_default
    
      inspect pptp
    
      inspect http
    
      inspect icmp
    
      inspect ftp
    
    !

    When I try to connect, I get this error in the real-time log viewer:

    TCP access denied by ACL from X.X.X.X/57356 to outside:A.A.A.A/443

    Here are the details of the license:

    Licensed features for this platform:
    
    Maximum Physical Interfaces  : 8
    
    VLANs                        : 3, DMZ Restricted
    
    Inside Hosts                 : Unlimited
    
    Failover                     : Disabled
    
    VPN-DES                      : Enabled
    
    VPN-3DES-AES                 : Enabled
    
    SSL VPN Peers                : 2
    
    Total VPN Peers              : 10
    
    Dual ISPs                    : Disabled
    
    VLAN Trunk Ports             : 0
    
    Shared License               : Disabled
    
    AnyConnect for Mobile        : Disabled
    
    AnyConnect for Linksys phone : Disabled
    
    AnyConnect Essentials        : Disabled
    
    Advanced Endpoint Assessment : Disabled
    
    UC Phone Proxy Sessions      : 2
    
    Total UC Proxy Sessions      : 2
    
    Botnet Traffic Filter        : Disabled
    

    This platform has a Base license.

    Can someone tell me what I am doing wrong or what access list I'm missing?

    I have two Cisco ASA 5510 firewall with a similar setup configuration and the AnyConnect SSL VPN works great.

    Hi Matt,

    You are probably landing on the tunnel-group by default - you will need to indicate which group to connect to the client. This can be done in different ways - I see that you already have a defined group aliases, but to be able to use that you must configure:

    WebVPN

    tunnel-group-list activate

    Alternatively, if you have only a single group, you can add 'group-url https://yourasa.yourcompany.com/ permit' to the webvpn attributes tunnel-group.

    HTH

    Herbert

  • NAT before going on a VPN Tunnel Cisco ASA or SA520

    I have a friend who asked me to try to help.  We are established VPN site to site with a customer.  Our camp is a Cisco sa520 and side there is a control point. The tunnel is up, we checked the phase 1 and 2 are good. The question is through the tunnel to traffic, our LAN ip address are private addresses 10.10.1.0/24 but the client says must have a public IP address for our local network in order to access that server on local network there.  So, in all forums, I see that you cannot NAT before crossing the VPN tunnel, but our problem is that our site has only 6 assigned IP addresses and the comcast router, on the side of the firewall SA520 WAN.  So we were wondering was there a way we can use the WAN on the SA520 interface or use another available 6 who were assigned to the NAT traffic and passes through the tunnel.  That sounds confusing to you?  Sorry, but it's rarely have I a customer say that I must have a public IP address on my side of the LAN.  Now, I say this is a SA520 firewall, but if it is not possible to do with who he is a way were able with an ASA5505?

    Help or direction would be very useful.

    Hello

    I guess I could quickly write a basic configuration. Can't be sure I remember all correctly. But should be the biggest part of it.

    Some of the course settings may be different depending on the type of VPN L2L connection settings, you have chosen.

    Naturally, there are also a lot of the basic configuration which is not mentioned below.

    For example

    • Configurations management and AAA
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    • Logging
    • Interface "nonstop."
    • etc.

    Information for parameters below

    • x.x.x.x = ASA 'outside' of the public IP interface
    • y.y.y.y = ASA "outside" network mask
    • z.z.z.z = ASA "outside" IP address of the default gateway
    • a.a.a.a = the address of the remote site VPN L2L network
    • b.b.b.b = mask of network to the remote site VPN L2L
    • c.c.c.c = IP address of the public peer device VPN VPN L2L remote site
    • PSK = The Pre Shared Key to connect VPN L2L

    Interfaces - Default - Access-list Route

    interface Vlan2

    WAN description

    nameif outside

    security-level 0

    Add IP x.x.x.x y.y.y.y

    Route outside 0.0.0.0 0.0.0.0 z.z.z.z

    interface Ethernet0

    Description WAN access

    switchport access vlan 2

    • All interfaces are on default Vlan1 so their ' switchport access vlan x "will not need to be configured

    interface Vlan1

    LAN description

    nameif inside

    security-level 100

    10.10.1.0 add IP 255.255.255.0

    Note to access the INSIDE-IN list allow all local network traffic

    access to the INTERIOR-IN ip 10.10.1.0 list allow 255.255.255.0 any

    group-access INTERIOR-IN in the interface inside

    Configuring NAT and VPN L2L - ASA 8.2 software and versions prior

    Global 1 interface (outside)

    NAT (inside) 1 10.10.1.0 255.255.255.0

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    crypto ISAKMP policy 10

    preshared authentication

    aes-256 encryption

    sha hash

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    card crypto WAN-CRYPTOMAP 10 set peer c.c.c.c

    card crypto WAN-CRYPTOMAP 10 the value transform-set AES-256

    card crypto WAN-CRYPTOMAP 10 set security-association second life 3600

    CRYPTOMAP WAN interface card crypto outside

    crypto isakmp identity address

    crypto ISAKMP allow outside

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    NAT and VPN L2L - ASA 8.3 software configuration and after

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

    IKEv1 crypto policy 10

    preshared authentication

    aes-256 encryption

    sha hash

    Group 2

    lifetime 28800

    L2L-VPN-CRYPTOMAP of the access list allow ip x.x.x.x a.a.a.a b.b.b.b host

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    card crypto WAN-CRYPTOMAP 10 set peer c.c.c.c

    card crypto WAN-CRYPTOMAP 10 set transform-set AES-256 ikev1

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    CRYPTOMAP WAN interface card crypto outside

    crypto isakmp identity address

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    tunnel-group c.c.c.c type ipsec-l2l

    tunnel-group c.c.c.c ipsec-attributes

    IKEv1 pre-shared key, PSK

    I hope that the above information was useful please note if you found it useful

    If it boils down to the configuration of the connection with the ASA5505 and does not cut the above configuration, feel free to ask for more

    -Jouni

  • Site to site VPN routing via ASA

    Need help setting up routing through the tunnel. We have a bunch of remote sites in the 192.168.0.0 16 passing through a central site 192.168.137.0

    How can I get all the traffic goes 192.168.0.0 to cross the tunnel. I have the tunnel upward, but no traffic passes through. Here is the config.

    XXXX # show run
    : Saved
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    ASA Version 8.2 (1)
    !
    xxxxx host name
    xxxx.xxx domain name
    activate the xxxxxxxx password
    passwd xxxxxxxxxxxxx
    names of
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    nameif outside
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    switchport access vlan 2
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    Access-group ICMP in interface outside
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    Sip timeout 0:30:00 sip_media 0:02:00 prompt Protocol sip-0: 03:00 sip - disconnect 0:02:00
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    L2LMAP interface card crypto outside
    crypto isakmp identity address
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    preshared authentication
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    md5 hash
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    SSH xxx.xxx.xxx.xxx xxx.xxx.xxx.xxx outside
    SSH timeout 60
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    management-access inside
    dhcpd dns 192.168.137.225 24.92.226.12
    dhcpd field arc.com
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    !
    dhcpd address 192.168.33.2 - 192.168.33.33 inside
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    !

    a basic threat threat detection
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    NTP server 206.246.122.250 source outdoors
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    WebVPN
    xxxx xxxx password username
    IPSec-attributes tunnel-group DefaultL2LGroup
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    inspect the preset_dns_map dns
    inspect the ftp
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    inspect the h323 ras
    inspect the rsh
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    inspect esmtp
    inspect sqlnet
    inspect the skinny
    inspect sunrpc
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    !
    global service-policy global_policy
    context of prompt hostname

    Thank you

    Mike

    As I suspected unmatched.

    Remote side is set to 3des/sha. You are set to 3des/md5.

    change the following:

    10 L2LMAP transform-set ESP-3DES-MD5 crypto card game

    TO

    10 L2LMAP transform-set ESP-3DES-SHA crypto card game

    Assuming that the things ACL match should be fine.

    Let me know.

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