VPN using the bearer network is Internet, and Internet network environment is a large and complex networks, network and general line network have a certain distinction. If you want a VPN solution that can operate to solve the following five questions:
A solution is a dynamic address allocation, operators can use DHCP Over IPSec technology to provide business customers IP address and network planning services.
2 solve the NAT traversal problem, many enterprises can not properly develop MIS system to the national or global, it is because NAT can not be solved after the local address and remote address unreasonable, so I use IPSec VPN must use the State Standard NAT traversal technology, operators can help businesses solve problems through two-way NAT, but not in operation during the face compatibility issues.
3 to solve the tunnel routing technology support, enterprise network environment is likely not a simple star networks, routing must support in order to meet the needs of different users.
4 to provide QoS support for the tunnel, the tunnel-based QoS can be guaranteed, can provide critical data for enterprise protection for operators to ensure the diversity of business.
5 dynamic IP addresses in case of tunnel establishment, enterprise customers are likely ADSL IP addresses dynamically allocated, so use common IP address as the target of the tunnel can not be established method of operation, so operators can provide DDNS to ensure that dynamic IP addresses tunnel establishment.
An operation of IPSec VPN solutions, including the level of
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