IPsec Site-to-Site Connectivity

Native IPsec and NAT-Traversal: Differences, decisions, and requirements
As of version 4.0, VNS3 now allows both NAT-T and Native IPsec endpoints on the same VNS3 Controller concurrently. Versions prior to 4.0 required all conne...
Tue, 11 Jun, 2019 at 12:48 PM
What are IPsec Endpoints?
IPsec Endpoints are the VNS3 configurations corresponding to the remote devices with which you will negotiate IPsec tunnels. These are typically extranet d...
Wed, 19 Jun, 2019 at 8:45 AM
What are tunnels?
A tunnel defines a pair of subnets (one local, one remote) which will be able to communicate via a particular endpoint. An IPSec phase 2 SA is negotiated fo...
Wed, 19 Jun, 2019 at 8:46 AM
I think my IPsec tunnel went down. How can I monitor tunnels?
If you're worried about a tunnel connection and/or see missing transactions in your reporting, you may want to monitor tunnel traffic. There are tw...
Wed, 19 Jun, 2019 at 8:46 AM
How to fix 3 common Network Device issues in VNS3
We’ve connected to pretty much every networking device out there, and we’ve learned the hard way what not to do while routing traffic to, from, and between ...
Wed, 19 Jun, 2019 at 8:46 AM
How many IPsec tunnels does VNS3 support? Is there any limitation?
Outside of license restrictions based on your subscription, there is no hard limit to the number of tunnels you can have. Licensing VNS3 is priced base...
Wed, 19 Jun, 2019 at 8:46 AM
What type of IPsec tunnel is supported by VNS3?
VNS3 has successfully negotiated IPsec tunnels with all leading extranet hardware devices actively supported by the vendor (and some that are out of life an...
Wed, 19 Jun, 2019 at 8:47 AM
Disabling Cisco's data lifetimes through ASDM
You should disable data lifetimes on peer devices in order to guarantee a stable connection, as VNS3 does not support data lifetimes. Cisco and certain ...
Wed, 19 Jun, 2019 at 8:47 AM
How to check if NAT-T is enabled on a Cisco ASA.
  There are 2 places on a Cisco ASA where NAT-T needs to be turned on. The ASA has to be "allowed" to use NAT-T (first setting), then it needs...
Fri, 16 Jun, 2017 at 5:08 PM
Can I SSH into VNS3? How do I check IPsec.d configuration?
VNS3 is sealed virtual appliance, so all access is via the Web UI or restful API. There is no SSH access[1]. No secret accounts, no backdoors! If you ne...
Wed, 19 Jun, 2019 at 8:47 AM