GMs in GDOI GET VPN

Similar Questions

• Key to GET VPN server

  Hi all

  We test the script GET VPN through the MPLS infrastructure using key 2 servers. In one of the key server, we have defined the local precedence than the other key server. The keyservers between them chose the higher priority server key as the main.

  In the configuration of the group members, we have defined key server addresses in the primary and secondary order.

  When unplug us the Server primary key and all the members of this group registers with the secondary key server and when the primary key is back, membership with the secondary key shows. Is there a way as in HSRP to stay ahead on the primary key.

  Second thing is, when unplug us the key server secondary, members who were registered at the recording of shows always server secondary key with this key server regardless of that this key server crashes. Is it a normal thing?

  Kindly help us.

  Thanking you

  Concerning

  Anantha Subramanian Natarajan

  Anantha,

  GM presents KS 'Active' in the group as the KS server list that registered the LAST GM with. This does not mean that GM will be re - registering with this first KS should it fail to get one to generate a new key. The GM always starts above him ordered list.

  Scott Wainner

• GET VPN tunnel mode and transport mode multicast

  Hello

  I really don't understand why GET VPN uses a tunnel for packets in multicast mode:

  Examples of a @multicast = 239.0.0.37:

  (1) here a package to GET VPN: | 239.0.0.37 | ESP | 239.0.0.37 | transport layer. Payload: : This way, he uses (two IP headers) IPSec tunnel mode.

  (2) here a package that I imagine to be better: | 239.0.0.37 | ESP | transport layer. Payload: : Mode of transport IPsec, 1 registered IP header = fewer bytes used.

  In both cases, the IP header cannot be secured, cause GET VPN Tunnel using the same multicast IP header (this is why it works so well...)

  I don't understand why Cisco uses model IPsec in tunnel mode to encapsulate packets instead of the mode of transport. I can't find a descent of answer to this question... Maybe my question is not relevant?

  Thanks for your replies.

  Concerning

  Stone,

  I quote DIG it

  It is worth noting that tunnel header preservation seems very similar to IPsec transport mode.
  However, the underlying IPsec mode of operation with GET VPN is IPsec tunnel mode. While
  IPsec transport mode reuses the original IP header and therefore adds less overhead to an IP
  packet (5% for IMIX packets; 1% for 1400-byte packets), IPsec transport mode suffers from
  fragmentation and reassembly limitations when used together with Tunnel Header Preservation
  and must not be used in GET VPN deployments where encrypted or clear packets might require
  fragmentation.
  

  In practice, reassambly concerns and initially odd behaviors with some encryption engines caused the recommendation to be tunnel mode.

  That being said, for large packages (where fresh important generals) overhead costs are minimal. For small packages (voice), the overhead is large, but the packet (after encapsulation) size should not be a problem.

  M.

• GET VPN on 6500

  Hello

  I was wondering if anyone has come across information about using a 6500 as a key server in an environment GET VPN?

  Hi Jason,

  The 6500 is not support for GETVPN KS

  Table 2 of the following link describes devices that are able to KS.

  http://www.Cisco.com/en/us/prod/collateral/iosswrel/ps6537/ps6586/ps6635/ps7180/product_data_sheet0900aecd80582067.html

• The ISR G2 GET VPN throughput

  I looked up a document detailing the flow of VPN to GET on the ISR G2 routers. I only found a general IPSec flow for them, and I couldn't find a document GET VPN for old ISR routers.

  Can someone help me find this information?

  Kind regards

  Xavier

  Xavier,

  It is always better to ping your Cisco system engineer for this information.

  I don't think we have an external update (module ISM came out considering in particular).

  As employees of Cisco, we cannot provide internal data and the majority of the results of the tests are labeled "confidential Cisco.

  Provide you those could make trouble for us :-)

  Marcin

• HA PKI to GET VPN

  Hi all

  I'm trying to set up a get with a highly available infrastructure PKI IOS vpn. I can not however, use w/HSRP SCTP because one of the routers CA is in the DC and the other is the Dominican Republic and the link between them is layer 3. I wish I could configure HSRP on a loopback interface.

  My first thought as I tested and works using the command 'archive of database' in the config of the pki server and exporting to the other router server CA. I would then announce the same with a loopback ip address 32 mask allow routing to switch between identical CA servers. The problem is that I don't think it's very elegant, and lose us on the replication of the LCR. The LCR is not considered to be critical for the deployment, but I would have if possible. Also have outdoor LCR welcomed all the infrastructure is not an option.

  Are there other options that will work for my setup?

  Kind regards

  Xavier

  Xavier,

  You can use the redundancy of old style:

  (1) configured both routers as separate cases. Register all GM/KS for two cases - i.e. mesh.

  (2) configure two routers to be sub-CA for a root CA. Enroll GMs to subCAs, you can validate certificates enrolled in the different subCAs using chaining of certificates.

  In fact the only way you have need of PKI for IKE is between KS and GM during the registarion, so you use could be simplified, using the CA on KSs service - although DIGGING GETVPN mentions it is for small scale deployments.

  M

• GET VPN - error on the key server

  Hello:
  When I apply a Crypto GDOI card to outgoing interface on the KEY SERVER, I see the following error message:

  * 1 sep 19:46:07.707: % SYS-3-MGDTIMER: uninitialized timer, set_exptime, timer = 493007 B 8. -Process = "Exec", PW = 0, pid = 202, - traceback = 0x43220180z 0x43E49EA0z 0x43D8A89Cz 0x43DAE5DCz 0x43D907BCz 0x419ACEC4z 0x419D2F4Cz 0x43215824z 0x43215808z

  This causes the crypto isakmp phase I to come. There are also IPsec SA of Phase II on the Member of the Group and is to encapsulate traffic. However, on the key server, I don't see that any SA Phase II IPSec defined.

  I checked the same behavior on two different IOS routers acting as a key server.

  2801 > sh ver

  Cisco IOS software, 2801 Software (C2801-ADVSECURITYK9-M), Version 12.4 (24) T4, VERSION of the SOFTWARE (fc2)

  2811 > sh ver

  Cisco IOS software, 2800 Software (C2800NM-ADVIPSERVICESK9-M), Version 12.4 (24) T4, VERSION of the SOFTWARE (fc2)

  I have generated RSA key pairs, defined in the ACL mirrored, static routes, isakmp, ipsec (including the transformation game) etc. correctly profile. The configs for the Group GDOI is as follows:

  gdoi crypto group GDOI

  Identification number 1

  local server

  generate a new passkey mypubkey rsa GDOI

  generate a new key transport unicast

  1.1.1.1 ipv4 address (interface WAN IP)

  his 10 ipsec

  match address ipv4 GDOI

  Profile GDOI

  !

  card crypto GDOI 10 gdoi

  set the Group GDOI

  !

  It was working a week ago and just started to happen. It is an off-production area. I'm stumped and looking for someone with answers. I don't see problems on BugKit tool from CISCO.

  Thank you

  Brian

  Well a KS cannot be a GM to itself if your configuration it incorrectly.  You said that it worked, but I don't see how it could have been.  A KS should be a stand-alone router, do nothing, but acting as the KS for the GMs GET.

• Basic question on Cisco GET VPN and MPLS

  Hello

  Imagine the Organization a (4) sites connected via MPLS, those not managed.

  If the customer wants to implement the Cisco VPN, is there no restrictions typical of the coast ISP or should I rely on any feature or the configuration of the ISP in order to make the Cisco VPN to work?

  From what I've read so far, it seems all the configuration must be done by THE customer without intervention of the ISP's side, but I want to confirm.

  Filtering on PE - CE or inside the cloud itself is rare, some ISPS could throttle/rate-limit certain protocols well.

  GETVPN will rely on GDOI 848/UDP-ESP / AH, if those who work you should be OK.

  Marcin

• Get VPN error 809 when you use IKEv2 and the machine certificates

  The message of 809 "talks" about problems with a firewall blocking ports UDP 500 & 4500 (NAT Transversal)

  However, my client firewall (Professional 64 bits) of windows 7 is OFF.

  My at & t Pace 4111n wan-router firewall is set to allow UDP 500 packets and 4500 thru.

  Does anyone know a way to map network UDP package tracking in my client win7 to PACE 4111n wan-router?

  I want to set up a trace, then connect VPN problem.

  Best regards

  Guy

  Hi guy,

  Thanks for the reply.

  I understand that your problem is not related to the server, but the issue that you are facing is better suited for the TechNet Support forum link given below.

  https://social.technet.Microsoft.com/forums/Windows/en-us/home?Forum=w7itprovirt%2Cw7itpronetworking%2Cw7itproappcompat%2Cw7itprohardware&filter=AllTypes&sort=lastpostdesc

  Let us know if you have any further questions.

• Get VPN client to connect, but request timed out when ping

  Hi, I use the router Cisco 837 as my VPN server. I am connected using Cisco VPN Client Version 5. But when I ping the ip of the router, I have request timed out. Here is my configuration:

  Building configuration... Current configuration : 3704 bytes ! version 12.4 no service pad service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname michael ! boot-start-marker boot-end-marker ! memory-size iomem 5 no logging console enable secret 5 $1$pZLW$9RZ8afI8QdGRq0ssaEJVu0 ! aaa new-model ! ! aaa authentication login default local aaa authentication login sdm_vpn_xauth_ml_1 local aaa authorization exec default local aaa authorization network sdm_vpn_group_ml_1 local ! aaa session-id common ! resource policy ! ip subnet-zero no ip dhcp use vrf connected ip dhcp excluded-address 192.168.1.1 ! ip dhcp pool michael    network 192.168.1.0 255.255.255.0    default-router 192.168.1.1    dns-server 202.134.0.155 ! ip dhcp pool excluded-address    host 192.168.1.4 255.255.255.0    hardware-address 01c8.d719.957a.b9 ! ! ip cef ip name-server 202.134.0.155 ip name-server 203.130.193.74 vpdn enable ! ! ! ! username michael privilege 15 secret 5 $1$ZJQu$KDigCvYWKkzuzdYHBEY7f. username danny privilege 10 secret 5 $1$BDs.$Ez0u9wY7ywiBzVd1ECX0N/ ! ! ! crypto isakmp policy 1 encr 3des authentication pre-share group 2 crypto isakmp xauth timeout 15 ! crypto isakmp client configuration group michaelvpn key vpnpassword pool SDM_POOL_1 acl 199 netmask 255.255.255.0 ! ! crypto ipsec transform-set ESP-3DES-SHA esp-3des esp-sha-hmac ! crypto dynamic-map SDM_DYNMAP_1 1 set transform-set ESP-3DES-SHA ! ! crypto map SDM_CMAP_1 client authentication list sdm_vpn_xauth_ml_1 crypto map SDM_CMAP_1 isakmp authorization list sdm_vpn_group_ml_1 crypto map SDM_CMAP_1 client configuration address respond crypto map SDM_CMAP_1 65535 ipsec-isakmp dynamic SDM_DYNMAP_1 ! ! ! interface Ethernet0 description $FW_INSIDE$ ip address 192.168.1.1 255.255.255.0 ip nat inside ip virtual-reassembly ip tcp adjust-mss 1452 hold-queue 100 out ! interface Ethernet2 no ip address shutdown hold-queue 100 out ! interface ATM0 no ip address no atm ilmi-keepalive dsl operating-mode auto pvc 0/35   pppoe-client dial-pool-number 1 ! ! interface FastEthernet1 duplex auto speed auto ! interface FastEthernet2 duplex auto speed auto ! interface FastEthernet3 duplex auto speed auto ! interface FastEthernet4 duplex auto speed auto ! interface Virtual-PPP1 no ip address ! interface Dialer1 description $FW_OUTSIDE$ mtu 1492 ip address negotiated ip nat outside ip virtual-reassembly encapsulation ppp dialer pool 1 ppp chap hostname ispusername ppp chap password 0 isppassword ppp pap sent-username ispusername password 0 isppassword crypto map SDM_CMAP_1 ! ip local pool SDM_POOL_1 192.168.2.1 192.168.2.5 ip classless ip route 0.0.0.0 0.0.0.0 Dialer1 ip http server no ip http secure-server ! ip nat inside source static udp 192.168.1.0 1723 interface Dialer1 1723 ip nat inside source static tcp 192.168.1.4 21 interface Dialer1 21 ip nat inside source route-map SDM_RMAP_1 interface Dialer1 overload ! access-list 1 remark SDM_ACL Category=16 access-list 1 permit 192.0.0.0 0.255.255.255 access-list 102 remark SDM_ACL Category=2 access-list 102 deny   ip 192.168.1.0 0.0.0.255 192.168.2.0 0.0.0.255 access-list 102 permit ip 192.168.1.0 0.0.0.255 any access-list 199 permit ip 192.168.1.0 0.0.0.255 192.168.2.0 0.0.0.255 route-map SDM_RMAP_1 permit 1 match ip address 102 ! ! control-plane ! banner motd ^C Authorized Access Only UNAUTHORIZED ACCESS TO THIS DEVICE IS PROHIBITED You must have explicit permission to access this device. All activities performed on this device are logged. Any violations of access policy will result in disciplinary action. ^C ! line con 0 no modem enable line aux 0 line vty 0 4 ! scheduler max-task-time 5000 end
  
  Thank you, anny help will be appreciated.
  			 
  Hi Michael,
  I have been through the newspapers, they are not conclusive and only detrmine that Phase 1 is coming. However according to this error message % SYS-2-BADSHARE: Bad refcount in pak_enqueue, ptr = 81B50AD8, count = 0 we are hiiting a bug on ios. The id of the bug is CSCsl24693 and the solution is to switch to 12.4 (11) XJ.
  Can you re-execute him debugs and send me the detailed results.
  Kind regards
  Aman
  		   

• GET VPN question: Key Server and latency review

  Hi, imagine that, for reasons of redundancy, I want to configure a keyserver in California and another key server in Hong Kong.

  Is there a problem of latency to be aware when you deploy key servers far from each other?

  http://www.Cisco.com/en/us/prod/collateral/iosswrel/ps6537/ps6586/ps6635/ps7180/deployment_guide_c07_554713.html

  I don't think so. 2 key servers have a tunnel secured between them, so if there is a problem you should see with this tunnel. The key servers don't provide sensitive information of latency that I saw.

• Get the VPN without dedicated key server

  Hi all

  We plan to implement Get VPN in our collection company and place the pieces necessary to complete setting up VPN access. And I have a question about the present.

  Do we really need a dedicated server key? I mean I know that the key server cannot be a member of the group, but here's my question. I have a router that is configured for some voice features. And I do not want to be a member of my VPN infrastructure get (but it will be on the network and available to offices and remote sites). If this router can be configured as a server key and still perform other services such as speech or other things? I really need to know if this can work.

  I'd appreciate a quick and accurate answer that this forum is my last resort. Thanks in advance.

  -Jay

  Hi Jay

  You must be a key server, as is the router that will push the political security to members of the group. But it cannot be part of IPSec connections that is, not a member of the group.

  You can run other services and features on this router. But it should not affect the ISAKMP and GDOI traffic among the members of the group.

  Regarding

  Kings

• Several VPN GET with Multicast clouds

  Hi all

  It is a recommended approach to use different multicast addresses if you use a key server to manage several groups GET VPN? It is not a provider environment hosted service but just for one customer in need of a logical separation.

  I think it would be a good idea to do it, but I'm not very familiar with multicasting on a set, so I would appreciate anyone sharing similar experiences or the potential pitfalls with this config. Is there something I need to watch out for?

  Xavier

  Xavier,

  given that we can separate the information at the level of the GDOI groups you should not need to use multiple addresses.

  However consider a scenario in which a GM is part of Group 1, but not in Group 2. He will receive discount at the key for both, but will not be able to understand group2 generate a new key, you will see the log messages that signals a problem once per hour.

  It makes sense to separate the addresses mcast especially if this deployment could grow/fork/expand in the future.

  M.

• GET overhead VPN

  Hi all

  We are looking for overhead represented due to GET VPN. Is there a table of comparison or the value.

  Thank you

  Concerning

  Anantha Subramanian Natarajan

  Anantha,

  As mentioned by Lloyd, GETVPN the new IP header is a copy of the original IP header. So, who's going to be 20 bytes (without options). Please keep in mind that the size of the package may vary depending on the options of encryption and authentication as AES, SHA, etc.. Basically, around 52 to 56 bytes. Thus, with the new IP header, looking at 72 to 76 bytes.

  I will quote the ESP RFC 4303 for more details.

  I have not seen a document of specific performance GET VPN on cisco.com. But, since the Original IP header is copied and placed in front of the ESP instead of a new IP as the traditional IPSEC header, I don't think he'll be a lot of difference in the performance of encryption between traditional and GET VPN.

  I hope it helps.

  Kind regards

  Arul

• Get ON a single router VPN KS and GM

  Hello

  I implement GET VPN and I want the KS to be GM as well... Is this possible?

  Thank you

  / ENTOMOLOGIST

  No, KS cannot be configured as a GM.

  Here is the document to support:

  http://www.Cisco.com/en/us/prod/collateral/vpndevc/ps6525/ps9370/ps7180/GETVPN_DIG_version_1_0_External.PDF

  Quote from page 6:

  Note: A device acting as a KS cannot be configured as a GM

  Hope that answers your question.