What is GETVPN?
Hi all
One have good doc for functioning GETVPN?
What this GETVPN is different from IPSec?
Thank you for your understanding.
The GDOI in Cisco and the JUNOS software implementation is based on the RFC 3547, that's why they work at the same time.
Thus, so long as other vendors follow this RFC, I think they should work correctly.
Let me know.
Please note any workstation that you be useful.
Post edited by: Javier Portuguez
Tags: Cisco Security
Similar Questions
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Hello
in fact I situation as mentioned further and I am confused about design and implement what VPN topology, I choose DMVPN, GETVPN or DVTI
I have 4 branch and 1 main site, branches have 2 connectivity to HQ a via INTERNET one another through MPLS, so I want to have Fail-over on the links and also secure two-way tunnel
Best regards
John Mayer
GETVPN is not supposed to be used on the internet. If this isn't the solution.
With this small amount of sites I set up static VTI on MPLS and use DVTIs on the internet if the branches have dynamic IPs. If the branches also have the static IP, I re also these links with the stuffy VTI.
DMVPN could also be used in this scenario, but the protocol overhead is not necessary in this small scale scenario.
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I'm trying to implement GETVPN to encrypt all sensitive data on telco provider network. Just
to give you a bit of history, we have about 500 1921 located routers remote agencies. We also have a Headend device
Here, who will act as the key for all server GM in remote branches. The router on the central/headquarters site will obviously be something much more to function as the key server.
Some remote organizations use an IP subnet, we ascribe to our network and others use their own subnet so they can interact with their local
Thus the network. For those who use their own private plan, we do a static NAT or a PAT in the remote router in order to allow their
desktop access to appropriate applications. We were told that GETVPN wouldn't work if we were PAT'ing addresses. Is this a real
Statement? I'm a bit confused by this statement, as the order of operations happens AFTER NAT on the outbound and BEFORE NAT on
incoming traffic.
So I guess that basically I'm just a NAT/PAT question make a difference? If it works now without GETVPN, should not work with?
If anyone could enlighten me, I would appreciate it.
In addition, since we have about 500 remote users, how GETVPN works during the implementation? So let's say, we apply the config at Headquarters
side and one of the remotes, this causes ALL other remotes to go down because they have not been implemented yet or we can slowly config each remote router over time?
Thanks in advance,
WARNING: It's around year old knowledge, don't hesitate to do consult me.
You're right about the count on NAT and GETVPN on the same device. It will work (with obvious diligence).
What does not work, it's a getvpn device is behind a NATing device.
For your second question, have a look at the GETVPN DIG
Particualrly, ITS passive and ITS reception are something that might be interesting.
FYI, the configuration guide.
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Hello community,
We run GETVPN on our branches and the need arose to find out how traffic works from branch to main site. So, I thought activation nbar and use manage engine Netflow Analyzer to graphically represent the traffic. My problem is that the router receives never managed by netflow analyzer and on the main site, I get a message:
% CRYPTO-4-RECVD_PKT_NOT_IPSEC: Rec'd package not an IPSEC packet. (ip) vrf/adr_dest = 10.130.21.62, src_addr = 192.168.1.250, prot = 17
(where 10.130.21.62 my netflow analyzer and 192.168.1.250 looping of routers).
I use "ip source stream import Loopback0" export traffic to.
So my question is:
Traffic is from the router itself not encrypted? -What is causing my problem?
I'll also try to see what happens if I change the source of import-export flows to a physical interface...
No indication of how to solve this problem will be highly appreciated.
Thanks in advance,
Katerina
Hello
Yes, you must have a CCO login in order to use the bug toolkit, but here is the description of bug:
CSCsk25481 Details of bug
Flexible Netflow export unencrypted packets
None
Symptoms:IOS does not encrypt the NetFlow export packages coming from the router itself. This is day 0
features like features are not applied to the NetFlow export packages, and has never been.The solution to this does not solve the above to the old code of netflow-Cisco switch, but rather
offers the possibility to encrypt outgoing packets to the new flexible netflow NetFlow export
product.Conditions:
NetFlow or Flexible NetFlow must be configured to export the data for the problem to be seen.
Workaround:
There is no work around
You don't need really 15.0 code to make this work, do anything later than 12.4 (20) T. What you need is the command 'exit-functions' under the configuration of the flow of exporter. Could you give it a try and let us know if that helps?
Thank you
Wen
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Card Crypto GETVPN on loopback
Hello
We have 6 WAN routers connected through MPLS ISP cloud, we must apply GET VPN between these WAN routers.
We have 2 servers of keys (1800 routers), and WAN routers will act as members of the Group (6 GMs)
The configuration files are attached for work typical configuration GETVPN (crypto map applied to the WAN interface)
In the key server configuration, the crypto isakmp command uses the WAN IP of each router WAN (172.16.x.x) address, and since KS routers are connected to the local network (VSS), they should be able to join 172.16.X.X and therefore the subnet in 172.16.X.X is announced for the local network (check GM-configuration file under eigrp - connected redist)
That's what our customers want to avoid! they don't want 172.16.X.X to make advertising for the local network.
I know it's possible in the configuration GETVPN to configure, the command crypto isakmp for use the loopback address of the routers WAN instead of the WAN IP address, but in this case the card encryption should be applied to address loopback, and for this, all traffic to be encrypted and decrypted to go through the loopback on all routers WAN interfaces.
I was wondering what is the best solution in this case, I have to use the config below on GM
card crypto-address loopback 0
TEST allowed 10 route map
set interface Loopback0
TEST IP policy route map-local
But I don't know if it is correct, or there may be a better idea... so I thought share with you guys to discuss all the best ideas.
Ali,
We do not support cryptographic cards on loopback interfaces.
Use the crypto-local address (in the case of vanilla IPsec) card or customer record interface (even if it is for another use) order under specifcy gdoi what inetrface or VRF you want to record source to / receive to generate a new key on.
You can take a look at DIG:
section 4.2.1.2.3 and other talk.
M.
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I get this newspaper.
GDOI-1-KS_NO_RSA_KEYS %: RSA - GROUP_KEY key: not found, required for the Group GROUP_1
Even if I create rsa keys, I always get this journal...
KEY-2 #sh crypto mypubkey rsa key
% Of key pair is generated at: 16:14:02 UTC on July 26, 2011
Key name: KEY-2. GETVPN.com
Storage device: private-config
Use: Encryption key
The key is exportable.
Key data:
305C300D 06092 HAS 86 01010105 00034B 00 30480241 00AF6DD5 94776919 4886F70D
24753 C 02 6AC2937B 73600F1C FD958857 16A5564E CF66D1F8 26BCFC60 1 B 986527
37611A 72 A699EEF3 2C6CE411 EE809A20 D86E0BFF C4753A43 E1020301 0001
% Of key pair is generated at: 16:20 UTC, July 26, 2011
Key name: KEY - 2.GETVPN.com.server
Temporary key
Use: Encryption key
Key is not exportable.
Key data:
307C300D 06092 HAS 86 4886F70D 00036B 00 01010105 00ACB3B4 30680261 61488B 26
1B094A8D 3D9E30FC 4F204DB8 00842618 B16BA72A A0004264 8EAFAE2A 9A6851D5
A60F8C12 83E47F2E F59E1479 1BA75C5A 8CBC4BFA CD303587 E788B2D0 1CFE0CD6
A3466D75 FCCFE4F7 9F1AFB4C F0B3ADD9 58BCB2AA 64149AC5 0B 020301 0001
What should be the problem?
config:
crypto ISAKMP policy 1
BA aes 256
preshared authentication
Group 2
life 3600
ISAKMP crypto key GETVPNKEY address 5.5.5.5
ISAKMP crypto key GETVPNKEY address 6.6.6.0 255.255.255.0
ISAKMP crypto key GETVPNKEY 1.1.1.0 address 255.255.255.0
ISAKMP crypto key GETVPNKEY address 123.0.0.0 255.0.0.0
ISAKMP crypto keepalive 10
!
!
Crypto ipsec transform-set esp-3des esp-sha-hmac GETVPN_TRANS_GROUP
!
Profile of crypto ipsec GDOI_PROFILE_GROUP
Set security-association second life 7200
game of transformation-GETVPN_TRANS_GROUP
!
gdoi crypto group GROUP_1
Identification number 1
local server
generate a new key broadcast 10 number 2
generate a new GROUP_KEY mypubkey rsa authentication key
generate a new key transport unicast
its ipsec 1
Profile GDOI_PROFILE_GROUP
match address ipv4 GETVPN_ACL
no replay
ipv4 123.1.1.3 address
redundancy
Local priority 10
peer of ipv4 123.1.1.2 address
GETVPN_ACL extended IP access list
Licensing ip 1.1.1.1 host 5.5.5.5
Licensing ip 1.1.1.1 host 6.6.6.6
permit ip host 6.6.6.6 1.1.1.1
permit ip host 5.5.5.5 1.1.1.1
!
access list 101 ip allow a whole
Hello
The name of the rsa key configured in the gdoi group is GROUP_KEY. Keys with this name doesn't seem to be present on the device. The present only key in sh crypto mypubkey rsa key is KEY-2. GETVPN.com.
Try changing the command "generate a new passkey mypubkey rsa GROUP_KEY" to "generate a new key mypubkey rsa authentication".
KEY-2. GETVPN.com ".
Or generate another set of key with the name GROUP_KEY
-Atul
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Hello
I am trying to run GETVPN on small test network. I have three routers:
R1 - like KS
R3 R4 & as a Member
R1 config:
crypto ISAKMP policy 10
BA aes
md5 hash
preshared authentication
Group 2
ISAKMP crypto cisco123 key address 0.0.0.0 0.0.0.0
!
!
Crypto ipsec transform-set GET aes - esp esp-sha-hmac
!
Crypto ipsec GET profile
transformation-GET game
!
gdoi crypto group GET
Identification number 1
local server
recomposition of the seconds of life 300
generate a new key broadcast 10 number 2
generate a new passkey mypubkey rsa R1.test.com
generate a new key transport unicast
its ipsec 1
GET profile
match 150 ipv4 addresses
window-size 64 meter reading
ipv4 10.0.0.1 address
interface FastEthernet0/0
the IP 10.0.0.1 255.255.255.0
half duplex
Config of R3:
crypto ISAKMP policy 10
BA aes
md5 hash
preshared authentication
Group 2
ISAKMP crypto cisco123 key address 0.0.0.0 0.0.0.0
!
!
gdoi crypto group GET
Identification number 1
Server address 10.0.0.1 ipv4
!
!
GET 10 gdoi crypto card
set the Group GET
interface FastEthernet0/0
IP 10.0.0.3 255.255.255.0
half duplex
GET crypto card
View orders:
R1 #sh crypto gdoi
Group information
Group name: GET
Group identity: 1
Group members: 2
The IPSec Security Association Management: both
Active Server Group: Local
Group life to generate a new key: 300 seconds
Generate a new key Group
Remaining life: dry 189
Period to generate a new key of retransmission: dry 10
Recomposition of retransmission attempts: 2
Retransmission of group
Remaining life: 0 seconds
Many IPSec security association: 1
Life to generate a new IPSec SA key: 3600 seconds
Profile name: GET
Method of proofreading: County based
Re-read the window size: 64
Generate a new key, SA
Remaining life: dry 1390
Configured ACL: access-list 150
List of servers in Group: Local
and
R4 #sh crypto gdoi
Group information
Group name: GET
Group identity: 1
New keys generated received: 0
The IPSec Security Association Management: both
ACL received between KS: gdoi_group_GET_temp_acl
Active Server Group: 10.0.0.1
List of servers in Group: 10.0.0.1
R4 #.
I received an error message:
* 19:05:17.691 Apr 16: % CRYPTO-4-RECVD_PKT_NOT_IPSEC: Rec'd package not an IPSEC packet.
(ip) vrf/adr_dest = 10.0.0.4 src_addr = 10.0.0.1, prot = 17
R4(Config-if) #.
You have an idea what is the problem?
Hello Hubert,.
The reason is as follows.
New generated keys are sent via udp on port 848. Since they are encrypted by CEC [but not by TEK], the router cannot decipher when IPSEC is looking.
In fact, your policy of KS should look like:
Access-list 150 deny udp any any eq 848
150 ip access list allow a whole
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Hello
I am applying GETVPN in an operational company with more than 150 branches. The only way to migrate a branch by branch without interrubting others, is to deny each local branch through deny political at the GM in the domain controller.
The local ACL deny is 600 lines long, and when it is applied, the CPU usage reaches 97%, which is expected.
The question is: this 97% use cites the router or its neighborships eigrp at some point? could affect the hardware of the router if left like this for 2 weeks for example.
Thanks in advance
Kind regards
AMR
CPU should be 97% only for a few seconds to a few minutes [process of Crypto ACL taking all resources during the creation of the internal classification structure.
600 lines of local political refusal is HUGE, and I don't know if we're still testing at Cisco.
You can check with show proc CPU sorted to see what process is guilty. CRYPTO ACL process and routing [such a eigrp] have the same priority [normal] and under normal conditions, things shouldn't Rabat.
The way in which you are migrating is a little weird.
Generally, customers are the following:
1 - installation of the servers receive only [no encryption] mode key
gdoi crypto group dgvpn1
.....
local server
......
his only reception
Of course, there is already an ACL defined here [for example that of step 3-]. It does not matter since we turn off encryption.
2 deploy GETVPN on all GM since there is no encryption. not to worry much about the consequences on the data path.
The objective here is to check if the control plan [alias GDOI] works well [everyone receives her generate a new key?] Y at - it drops in the path for the new keys generated? If necessary the qos parameters.
3 - Select a small amount of sites to which you encrypt [of course that its reception only is deleted]
Datacenter <->small site
Datacenter <->average site
Datacenter <->Big site
Create an ACL includes only subnets of theses. Test the datapath [applications...]. If all goes well and all your sites are consistent in the flow of network they use, then you have pretty confident for the next step. This should work for a few days - weeks
4 - Big bang... Enable encryption for all sites. [amending accordingly the ACL KS------]
If step 3 - was a success, and if all the routers are properly sized for encryption, it will manage, then you're ready for success.
A good read:
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