"IT managers oversee teams of IT technicians in order to maintain a company's technology infrastructure. Employers will be looking for candidates who combine technical know-how with superb managerial and communication skills. In preparation for an interview, come ready to discuss your knowledge of the field, leadership experience, and conflict management abilities."
Why are point to point VPNs not exactly the best way to connect LANS
The rekeying that occurs plays havoc with monitoring software.
The rekey interval is usually 1 or 8 hours, by default. It can be made longer if desired. The biggest downsides I see of VPNs are 1) No firm SLA - VPNs are dependent on the Internet, and thus prone to any performance issues or outages. 2) Limited Scalabilty - As the network expands or changes, all the tunnels must be manually updated (unless you're running a dynamic routing protocol across them). 3) Limited features - For example, it's impossible to bridge the same subnet across a VPN. 4) Complexity - IPSec has lots of options, and if both sides don't match exactly, the tunnel will have problems. This is a big headache if you don't control the equipment on both sides of the tunnel.