If I have a remote ASA connecting to an ISR via EZVPN - the ISR is the EZVPN hub/server. I understand how the tunnel gets setup etc., but I'm not sure how the routing takes place. Can the ISR inform the local router what routes it is responsible for? How does the ISR know how to route packets for different ezvpn tunnels?
The routing of packets across the vpn tunnel will be decided by the split ACL configuration on the server.
If there is no split ACL configured then the Ipsec SA will be from the assigned client IP to any which means everything from that IP will be sent across the tunnel and the ISR will decide on where to send the traffic.
The differentiation by the server will be based on the IP addresses assigned to each of the clients.
For example, if the IP assigned to the client is 172.16.12.3 then the Ipsec SA will look like this.
local ident (addr/mask/prot/port): (0.0.0.0/0.0.0.0/0/0)
remote ident (addr/mask/prot/port): (172.16.12.3/255.255.255.255/0/0)
Thus the EZvpn server will know how to reach each of these clients individually.
Radius server configuration for 802.1XServer radius test1Address ipv4 10.1.1.1Key 1234!Server radius test2Address ipv4 10.1.1.2Key 1234!aaa group server radius TEST-grserver name test1server name test2!aaa authentication dot1x default group TEST-graaa aut...
One of the biggest concept in VPN Technologies is NAT Traversal, like NAT Traversal in VOIP deployment with SIP Protocol, the history is always inside the payload to solve the Incompatibility between NAT and IPSEC like the Incompatibility between SIP prot...
"What is this 'Orbital Query Corner' thing", you ask? It's the name of an occasional series of articles, each discussing one particular point or use case for the Orbital advanced search feature that is available in Cisco Secure Endpoint starting at ...
0. The Issue
On 20 July 2021, Microsoft issued an alert for CVE-2021-36934 "Windows Elevation of Privilege Vulnerability".  The problem in this case is an overly permissive Access Control List (ACL) applied to system files, including the Se...