Isakmp: Callback: No Sa Found For 0.0.0.0/0.0.0.0

Posted on 23.09.2019

ISAKMP: callback: no SA found for 0.0.0.0/0.0.0.0 vrf 0 So to speak no SAs are being established and IPSec tunnel failes to come up. Anybody tried that and had the same problem? I'd appreciate your help on that. Thanks, Remi.

Isakmp: Callback: No Sa Found For 0.0.0.0/0.0.0.0 One
Isakmp: Callback: No Sa Found For 0.0.0.0/0.0.0.0 Full

Our customer’s Cisco ASA firewall is terminating the IPSec site-to-site VPN with Microsoft Azure.As we have detected too much delay over this VPN session we started debugging the connection,and found the following problem:In the established VPN session if there is no bidirectional traffic for a couple minutes (3-5 minutes), the ASA receives IKE delete messages from the Azure (168.63.9.58, 168.63.106.127,168.63.37.2) for specified IPSec SAs (specified SPIs). The IPSec SA lifetime is set to 3600 seconds, which differs from the normal operation of the VPN.The VPN session was not interrupted, the ISAKMP SA-s were still working, only specified SAs had been deleted because there were no traffic to match the corresponding crypto ACL entries.We tried to keep the VPN session alive with ICMP messages, it ceased the frequent deletion of SAs, but there are still detectable slow-downs in the operation.Since a near real-time application using this VPN connection, it is unacceptablefor the VPN connection to add more than 2 seconds delay to the communication.

The rebuild of this VPN connection takes much longer than that.VPN is terminated by Cisco ASA 8.2.5. Akos,We'll need to investigate this directly with you.

Please send me an email toalong with the following information:1. The title of this post in the subject line2. Your first and last name and Live ID3. A link to this forum post4. Your subscription ID5. The VM's info (any VM in the VNet):i) VM nameii) VM DEPLOYMENT IDiii) OS version of the VMiv) Time Zone of the VM6.

Virtual Network configuration export file from the Portal in XML format.7. Name of the affected VNet8. My colleague, Brian, will post here as well asking for additional information. We need the above plus whatever Brian requests.We may need to collect network captures from you.is preferred but you can use other tools as well.Regards,-Steve. Hello,Thank you for posting your question here.Did you use one of to model the configuration of your Cisco ASA?The reason I ask is that you mention that 'SA lifetime of 3600 seconds. Differs from the normal operation of the VPN'.

However, this setting is covered in the sample script.Exactly which model do you have? Please know that the only ASA models on are the 5505 and 5585. In addition, it appears that your IOS version is below the minimum supported version of 8.3.Best regards,-Steve. Akos,We'll need to investigate this directly with you.

Isakmp: Callback: No Sa Found For 0.0.0.0/0.0.0.0 One

Name of the affected VNet8. Star wars battlefront 2 crack only download. My colleague, Brian, will post here as well asking for additional information. We need the above plus whatever Brian requests.We may need to collect network captures from you.is preferred but you can use other tools as well.Regards,-Steve. Hi,To assist further, I'd like to make sure I correctly understand the behavior being experienced.

I have questions specifically regarding the statements.' We tried to keep the VPN session alive with ICMP messages, it ceased the frequent deletion of SAs, but there are still detectable slow-downs in the operation.'

The connection rebuildings occurs several time in 1 hour.' So, as I understand it we've eliminated the IKE delete messages that were coming from Azure, but the SA's are still being deleted at some point?If this is the case, then a good beginning is to gather a network capture on the outside interface of the ASA for a period long enough to repro the issue. Filtering on IKE and/or the IP of the Azure gateway will help us focus on just the negotiation traffic between the two endpoints. Hopefully you can port-mirror the switchport that the ASA is attached to. Then we can use a machine running NetMon as Steve suggested.Any other info you might be able to provide regarding the pattern may be useful as well.

Isakmp: Callback: No Sa Found For 0.0.0.0/0.0.0.0 Full

How often the problem occurs. The nature of the traffic traversing the tunnel; its regularity, how long is it idle, etc. And so on.Regards,Brian. I am having a similar issue with ASA 5520 v 8.0. The VPN connection can be established only if the traffic is initiated from the Local Network side.

Initiating traffic from the Azure side does not help bring up the VPN. But once the VPN is up we are ableto send traffic both ways. We do have to keep the traffic going so that the VPN stays up, but it still goes down once every few days ( maybe due to the deletion of SAs caused by somedelay). This essentially would require us to get the traffic initiated from the Local Network to bring up the VPN. I'm also experiencing this issue.Several continuous pings, show commands and a conditional crypto debug on the ASA revealed that single IPSEC SA's were dropping occasionally and these corresponded with the subnets within which the continuous pings stopped for the duration of the drop. Alsonoted that within a single ISAKMP SA there were multiple IPSEC SA's, but with different negotiated session parameters.

For instance two would have identically negotiated lifetime/size parameters, whereas two others had only lifetime negotiated, each with differingparameters. This is an option that cannot be specified within the ASA configuration.

The incoming IPSEC SA rekey packet for the SPI matching the dropped subnet was received inbound from the Microsoft Azure cloud. Conclusion is that the Microsoft Azure cloudend of the VPN was responsible for causing the ASA to rekey its IPSEC SA's earlier than the expiration timers were set to. The crypto debug showed 'Session is being torn down. Reason: User Requested' coming in from the Azure cloud well before theIPSEC SA timers expired.

After this the SPI's for each IPSEC SA are deleted, but only 3 out of 4 completed re-keying. Then the one SPI that didn't re-key re-established much later, corresponding with the duration of the dropped pings.

ContentsOverviewThe content of this article cover the VPN site to site configuration using GRE tunnels protected by IPSEC. The configuration is setup in cross platform between Checkpoint – Fortigate and Checkpoint – Cisco.There are 3 sites in total: England (Checkpoint), Holland (Fortigate) and Singapore (Cisco), Fluidone is the ISP name represented for Internet. Lab Setup and DiagramThis lab was setup using VMware Workstation 14 in combination with EVE-NG platform. Checkpoint (CP) and Fortigate (FG) are virtual machines while EVE-NG simulate Cisco devices. The connection between CP or FG to Cisco routers are using EVE-NG cloud.