Site to Site VPN tunnel between two ASA
I use the Site Wizard to Site on an ASA 5520, and ASA 5505 of the ADSM. Both are using 8.4 (5). When you create configurations. You follow the wizard configurations with manual what ACL s to allow the traffic of every subnet connected to talk to each other? Or they are automatically generated in the configuration file? Have not been to school yet to understand how to create the CLI VPN tunnels and what to look for.
Thank you
Carlos
Hello
First, I would like to say that I don't personally use ASDM for the configuration.
But you should be able to configure all the necessary elements for a connection VPN L2L base through the wizard.
I guess that typical problems to do so could relate to the lack of configuration NAT exempt or might not choose the setting "Bypass Interface Access List" that would mean you would allow traffic from the remote site in the 'external' ACL of ASA local interface. Like all other traffic coming from behind the 'outer' interface
If you share format CLI configurations and say what networks must be able to connect via VPN L2L then I could give the required CLI format configurations.
-Jouni
Tags: Cisco Security
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-------
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!
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hash sha256
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!
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-------------------------------------------------------------------------------------
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RTR_A
||
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=========================================================Here is a skeleton of the FWa configuration:
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I'm Tournai on icmp trace debugging on both firewalls and could see the traffic arriving at the inside2 interface, but never return to FWa.Ping Successul FWa inside the interface on FWb
FWa # ping 192.168.20.1
Type to abort escape sequence.
Send 5, echoes ICMP 100 bytes to 192.168.20.1, time-out is 2 seconds:
Echo request ICMP from outside-interface to 192.168.20.1 ID = 32068 seq = 23510 len = 72
! ICMP echo reply to 192.168.20.1 in outside-interface ID = 32068 seq = 23510 len = 72
....FWb #.
Echo ICMP of S.S.S.S to 192.168.20.1 ID request = 32068 seq = 23510 len = 72
ICMP echo reply 192.168.20.1 S.S.S.S ID = 32068 seq = 23510 len = 72
==============================================================================
Successful ping of Fwa on a host connected to the inside interface on FWbFWa # ping 192.168.20.15
Type to abort escape sequence.
Send 5, echoes ICMP 100 bytes to 192.168.20.15, wait time is 2 seconds:
Echo request ICMP from outside-interface to 192.168.20.15 ID = seq 50862 = 18608 len = 72
! ICMP echo reply to 192.168.20.15 in outside-interface ID = seq 50862 = 18608 len = 72
...FWb #.
Inside outside:S.S.S.S ICMP echo request: 192.168.20.15 ID = seq 50862 = 18608 len = 72
ICMP echo reply to Interior: 192.168.20.15 outside:S.S.S.S ID = seq 50862 = 18608 len = 72===========================
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Send 5, echoes ICMP 100 bytes to 10.52.100.10, wait time is 2 seconds:
Echo request ICMP from outside-interface to 10.52.100.10 ID = 19752 seq = 63173 len = 72
? Echo request ICMP from outside-interface to 10.52.100.10 ID = 19752 seq = 63173 len = 72
...FWb #.
10.52.100.10 ID of S.S.S.S ICMP echo request = 19752 seq = 63173 len = 72
10.52.100.10 ID of S.S.S.S ICMP echo request = 19752 seq = 63173 len = 72
....==================================================================================
Unsuccessful ping of Fwa to a host of related UI inside2 on FWb
FWa # ping 10.52.100.1
Type to abort escape sequence.
Send 5, echoes ICMP 100 bytes to 10.52.100.1, wait time is 2 seconds:
Echo request ICMP from outside-interface to 10.52.100.1 ID = 11842 seq = 15799 len = 72FWb #.
Echo request ICMP outside:S.S.S.S to inside2:10.52.100.1 ID = 11842 seq = 15799 len = 72
Echo request ICMP outside:S.S.S.S to inside2:10.52.100.1 ID = 11842 seq = 15799 len = 72=======================
Thank you
Hi odelaporte2,
Is very probably the "access management" command is not applied in the second inside, only inside primary (see the race management) which will confirm.
This command can be applied to an interface at a time, for example, if the law is now applied to the inside, it can not be applied to the inside2 at the same time.
It may be useful
-Randy-
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------------------------------------------------------------------------------------------------------
Debug crypto ISAKMP
encryption of debugging engine
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debug output
------------------
1d20h: IPSEC (sa_request):,.
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You must also allow the esp Protocol in your ACL.
access-list 101 permit esp any host x.x.x.x (address of the hub)
Hope this helps,
-Nairi
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ipv4 ipsec tunnel mode
tunnel vrf INET
Ipsec TUNNEL-IPSEC-PROTEC protection tunnel profile
!
interface FastEthernet0/0
IP vrf forwarding INET
IP 203.0.0.3 255.255.255.0!
IP route 102.0.0.1 255.255.255.255 FastEthernet0/0 203.0.0.2
#######################################################
There is a router between R1 and R2, it is used only for connectivity:
interface FastEthernet0/0
IP 102.0.0.2 255.255.255.0
!
interface FastEthernet0/1
IP 203.0.0.2 255.255.255.0The problem that the tunnel is not coming, I can't pass through phase I.
The IPsec VPN are not my strength. So if someone could show me what mistake I make, I'd appreciate it really.
I joined ouptup #debug R2 crypto isakmp
Source and destination Tunnel0 is belong to VRF INET, the static route need to be updated.
IP route vrf INET 102.0.0.1 255.255.255.255 FastEthernet0/0 203.0.0.2
crypto isakmp profile test
VRF INET
door-key test
function identity address 102.0.0.1 255.255.255.255 -
I do a search in the search of the best solution for switching between two ASA and hoped that someone wants to point me in the right direction.
The situation is this, we got:
-Head Office 2:
Each is equipped with an ASA 5505
-10 branches
Each is equipped with a 887 integrated services router.
Each is BranchOffice must have a redundant VPN connection at the headquarters of these two, and they all need to use the first person as main and the other in high school. In case of failure, all branches need to use the second connection VPN going the second seat.
In my research, I'm looking for the best possible solution, with faster failover, but have no idea where to start my research.
I hope someone has a good answer for this one.
Thank you very much in advance,
Kind regards
Dwayne
I do not understand why people continue to use ASA devices for VPN endpoint. the ASA is NOT designed for complex VPN scenarios. It is designed for simple scenarios. In terms of VPN by using comparison, ASA is a person with a basic education while Cisco IOS is like a person with a college degree.
For the scenario, you will be much better using Cisco IOS routers everywhere, where you can implement the GRE/IPSec or DMVPN. Both cases will be sastify to your needs.
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