supported vs IPSec VRF taking crypto maps for several tunnels
Hi all!
I came to know that we can use the same public ip address for the creation of several tunnels to different websites using crypto-cards featuring many lines each representing a reference to a particular tunnel and using vrf aware IPsec, but I would like to know what are the differences / advantages / cautions.
Thanks for your time
Murali.
Murali
That I understand the feature essentially allows you to have multiple IPSEC tunnels and traffic in the tunnel that is to say. source and destination IP of the high-end devices can be in different VRF.
So it works mainly with the MPLS VPN IE. If you had several MPLS VPN each with their own VRF you can then run ISPEC tunnels on the MPLS network and when packets are received, they are automatically in the correct VRF.
You could not do that normal crypto cards IE. You can cancel again several IPSEC tunnels on a public IP address but then everything would be traffic in the same global routing table.
If the benefit is basically the same that you get with any VRF installation IE. logical separation of traffic on a single device.
Can't really say much about the warnings as I've never used it but there are some restrictions.
See this link for more details-
Jon
Tags: Cisco Security
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role of the crypto map sequence number
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Hi all
I try to have several VPN site-to-site hooked to my Interface Outside one.
I understand that I may have a crpypto card assigned to the interface.
If I want to for example, one of virtual private networks to require PFS but either not to do it-just set a different priority under the Crypto map? Map crypro entries get transformed top to bottom until a match is found?
for example
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You're right, the encryption card is dealt top-down. So if your traffic is ACL2 (and not ACL1!), then all settings configured under sequence CMAP 20 are relevant in this regard.
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-------------- \/ CONFIG 1 \/--------------------
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------------/\ CONFIG 1 /\ --------------------
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I have a card encryption that has worked great for me in the past. The combination
Both looks like this:
---------------\/ CONFIG 2 \/ --------------------------
Nine AAA
AAA authentication login userauthen local
AAA authorization groupauthor LAN
crypto ISAKMP policy 5
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DNS 10.0.0.4
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card crypto isakmp authorization list groupauthor secure1_in
client configuration address card crypto secure1_in answer
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!
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IP nat inside source overload map route sheep interface Ethernet0
access-list 105 permit ip 192.168.10.0 0.0.0.255 192.168.20.0 0.0.0.255
!
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access-list 110 permit ip 192.168.0.0 0.0.0.255 any
!
sheep allowed 10 route map
corresponds to the IP 110
---------------/\ CONFIG 2 /\---------------------------
It's classic crypto right out of the playbook of Cisco. This card works
very well with the Cisco VPN client, but produced the following errors after a
successful with Checkpoint Firewall P1 installation:
--------------\/ ERROR OUTPUT \/ -----------------------
05:13:02: ISAKMP (0:2): send package to 1.2.3.4 (R) MM_KEY_EXCH
05:13:02: ISAKMP (0:2): entry = IKE_MESG_INTERNAL, IKE_PROCESS_COMPLETE
Former State = new State IKE_R_MM5 = IKE_P1_COMPLETE
05:13:02: ISAKMP (0:2): need to config/address
05:13:02: ISAKMP (0:2): need to config/address
05:13:02: ISAKMP: node set 1502565681 to CONF_ADDR
05:13:02: ISAKMP (0:2): pool of IP addresses not defined for ISAKMP.
05:13:02: ISAKMP (0:2): node 1502565681 error suppression FALSE reason «»
05:13:02: ISAKMP (0:2): entry = IKE_MESG_INTERNAL, IKE_PHASE1_COMPLETE
Former State = new State IKE_P1_COMPLETE = IKE_CONFIG_MODE_SET_SENT
05:13:02: ISAKMP (0:2): 1.2.3.4 received packet (R) CONF_ADDR
05:13:02: ISAKMP: node set-1848822857 to CONF_ADDR
05:13:02: ISAKMP (0:2): entry unknown: status = IKE_CONFIG_MODE_SET_SENT, major, minor = IKE_MESG_INTERNAL, IKE_PHASE1_COMPLETE
05:13:04: ISAKMP (0:2): 1.2.3.4 received packet (R) CONF_ADDR
--------------/\ ERROR OUTPUT /\--------------------------
This does not happen to config 1. If it's a PIX, I would use the
No.-config-mode keyword after the No.-xauth on isakmp crypto "key."
command line. It is not available on IOS IPSEC and I have never
needed to do before. I am running Cisco IOS 12.2 (5.4) T on a VPN of 1721
router. The static map seems to work by itself. What I am doing wrong?
I saw her a couple of times and to be honest have never taken down to an exact cause, although in this case it looks like almost to the point of control request an IP address which is weird. Try the following:
1. Add "card crypto secure1_in client configuration address to initiate" and see what it does.
2. try 12.2 (8) code T5 with it, I had a previous user running 12.2 (11) T and we got the same error messages, returning to this level of code it is resolved.
In addition, you wouldn't need:
> access-list 110 deny ip 192.168.10.0 0.0.0.255 172.16.30.0 0.0.0.255
for example, so that you do not NAT client VPN traffic?
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2 - person here can fix anything
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