How to allow VPN PPTP by ASA access

Hi guys,.

I allow VPN clients to internal PPTP server located behind a firewall of ASA and running on a Windows 2 K 8 Server machine.

I found that the Setup is different on the version of the ASA. I'm under ASA Version 8.2 (5).

There are many rules in place and keep the. I found a lot of guides is bad because they push the drive to remove the existing rules rather than add new.

Can you please let me know how? (If possible via ADSM) and if I have to wait the questions when I decide to upgrade my ASA?

Thank you

Dario

You must configure static NAT translation because I believe that the PPTP traffic is incoming from the Internet.

You must allow PPTP traffic on the external interface: TCP/1723

You must enable PPTP inspection: inspect pptp

Tags: Cisco Security

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    fixup protocol 2000 skinny
    fixup protocol smtp 25
    fixup protocol sqlnet 1521
    fixup protocol tftp 69
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    access-list outside_access_in allow icmp a whole
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    pager lines 24
    the history of logging alerts
    ICMP allow all outside
    Outside 1500 MTU
    Within 1500 MTU
    IP address outside of *. *. *. * 255.255.255.248
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    alarm action IP verification of information
    alarm action attack IP audit
    IP pool local remote_users 192.168.1.200 - 192.168.1.205
    !
    PDM logging 100 information
    history of PDM activate
    ARP timeout 14400
    Global 1 interface (outside)
    NAT (inside) 0-list of access inside_outbound_nat0_acl
    NAT (inside) 1 0.0.0.0 0.0.0.0 0 0
    Access-group outside_access_in in interface outside
    inside_access_in access to the interface inside group
    Route outside 0.0.0.0 0.0.0.0 *. *. *. *
    Timeout xlate 0:05:00
    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
    Sip timeout - disconnect 0:02:00 prompt Protocol sip-0: 03:00
    Timeout, uauth 0:05:00 absolute
    GANYMEDE + Protocol Ganymede + AAA-server
    AAA-server GANYMEDE + 3 max-failed-attempts
    AAA-server GANYMEDE + deadtime 10
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    AAA-server RADIUS 3 max-failed-attempts
    AAA-RADIUS deadtime 10 Server
    AAA-server local LOCAL Protocol
    Enable http server
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    Sysopt connection permit-pptp
    Telnet timeout 5
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    Console timeout 0
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    VPDN group PPTP-VPDN-GROUP ppp encryption mppe auto
    VPDN group configuration client PPTP-VPDN-GROUP address local remote_users
    VPDN group VPDN GROUP-PPTP client configuration dns 200.57.2.108 200.57.7.61
    VPDN group VPDN GROUP-PPTP pptp echo 60
    VPDN group VPDN GROUP-PPTP client for local authentication
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    VPDN allow outside
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    dhcpd address 192.168.1.100 - 192.168.1.199 inside
    dhcpd dns 200.57.2.108 200.57.7.61
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    The PIX cannot re - route traffic to the Internet because it's a feature supported on version 7.x and higher. You cannot execute code on PIX501 7.x.

    You can send all traffic through the tunnel (for the PIX) and have the PIX route this traffic to a router internal (on the head), then rewritten the PIX to the Internet.

    Federico.

  • iPad VPN from Cisco ASA 5520

    Hello

    I'm trying to get my ipad to VPN to our Cisco ASA5520.

    I think I have all the correct settings on both ends (I am able to vpn to the asa using a cisco 871 as the remote client).

    I think that for some reason the client vpn on ipad is not even make the asa. My question is: How can I monitor the ASA logs to see if the same connection attempt and eventually find the failure?

    Thank you

    M

    try: -.

    Debug crypto ISAKMP

    Debug crypto ipsec

    Vpn-sessiondb SH remote control (to see if the client is connected)

    I have configured ipad for remote vpn client, the user could connect to the 5520 but why that I had to use the ip addresses to access, but I couldn't use internal dns names. try to understand that at this moment.

    It may be useful

    Manish

  • The remote VPN Clients and Internet access

    I apologize in advance if this question has already been addressed. I am currently using a PIX Firewall Version 6.1 520 (2) running. I have several remote users that VPN for the PIX. Once the VPN tunnel is started, they are more able to connect to internet from their local computers. Is there a configuation on the PIX that allows remote users to have access to the internet when you are connected to the PIX.

    TIA,

    Jeff Gulick

    The Pix does not allow traffic enter and exit on the same interface. Therefore, a VPN user cannot access the Internet through the tunnel. If you use the Cisco client, enable tunneling split so that all traffic through the tunnel.

    If you use PPTP, you can turn off the option that makes the remote network, the default gateway. However, local routes should be added to these clients when they connect.

    Or you can use an additional interface on the firewall. One that puts an end to VPN tunnels and another providing for Internet connectivity. In this way the traffic is not enter/leave on the same interface.

    Of course, it is preferable if the customer Internet traffic does not go through the tunnel. It wastes your bandwidth and has security problems as well. I suggest you use the client to Cisco and the split tunneling.

  • 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.

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    • Configurations management and AAA
    • DHCP for LAN
    • Logging
    • Interface "nonstop."
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    • 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

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    nameif outside

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    interface Ethernet0

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    switchport access vlan 2

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    interface Vlan1

    LAN description

    nameif inside

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

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    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

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

    crypto ISAKMP policy 10

    preshared authentication

    aes-256 encryption

    sha hash

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

    card crypto WAN-CRYPTOMAP 10 matches L2L-VPN-CRYPTOMAP address

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

    pre-shared key, PSK

    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

    card crypto WAN-CRYPTOMAP 10 matches L2L-VPN-CRYPTOMAP address

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

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

    CRYPTOMAP WAN interface card crypto outside

    crypto isakmp identity address

    Crypto ikev1 allow outside

    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

  • Configuration of the router to allow VPN traffic through

    I would like to ask for assistance with a specific configuration to allow VPN traffic through a router from 1721.

    The network configuration is the following:

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    Remote clients connect from the internet by using the Cisco VPN client. The 1721 should just pass the packets through to the PIX, which is 192.168.0.2. Inside of the interface of the router is 192.168.0.1.

    The pix was originally configured with a public ip address and has been tested to work well to authenticate VPN connections and passing traffic in the local network. Then, the external ip address was changed to 192.168.0.2 and the router behind.

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    Cisco VPN clients receive an error indicating that the remote control is not responding.

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    Manual.

    Brian

    For VPN clients reach the PIX to complete their VPN the PIX needs to an address that is accessible from the outside where the customers are. When the PIX was a public address was obviously easy for guests to reach the PIX. When you give the PIX one address private, then he must make a translation. And this becomes a problem if the translation is dynamic.

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    Rick

  • How to allow only .gov Web sites on Windows XP using the installation of the broad-band

    How to allow websites .gov only on Windows XP. Use BSNL broadband. Made of internet sharing in LAN.

    Concerning

    Maton

    Hi Matt,

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    If that is not the case, and I think it might, please repost your question in the following forum to get the expert assistance you need: http://answers.microsoft.com/en-us/windows/forum/windows_xp-networking?page=1&tab=all.

    I hope this helps.

    Good luck!

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