* CH: 25 bytes for IPv4: 20 correspond to IP, 4 to L2TP
and 1 to PPP header.
The routing features of the APR-3100N series include VPN settings IPsec, Open VPN, PPTP and L2TP
. The unit also provides administrative tools such as wireless status connection monitoring, event monitoring by syslog, IP address access table and blockage to websites with either a URL address or keyword.
It also supports a variety of networking and VPN protocols, including NAT, PPPoE (client), DHCP (client, server), DNS (client), as well as L2TP
, PPTP and IPSec passthrough.
Vendors, however, have combined PPTP with a similar protocol--Cisco Systems' Layer 2 forwarding protocol--to create L2TP
, which supports multiple, simultaneous tunnels for a single client.
Other protocols exist, most notably PPTP and L2TP
. Both have some of the key security elements, but neither is as comprehensive and effective as IPSec.
IPSec and L2TP
protocols with wire-speed, hardware-based compression, DES/3DES encryption and public key acceleration deliver support for hundreds of site-to-site VPN tunnels at a price point more than 35% below competitive platforms.
- TalkTalk Business provides a full range of communications products including Access, Mobile, Call Handling Solutions, IP Telephone Systems, IT Networking & Security and Wholesale Business Broadband (L2TP
Key enhancements in version 3.0 include new security features for wide-area clients running industry-standard L2TP
over IPsec, enhanced security on Wi-Fi networks, expanded VPN services and support for the Microsoft Windows 2000 operating system.
Microsoft has implemented Layer 2 Transport Protocol (L2TP
) and IPSec for secure remote access via tunneling.
The FlowPoint VPN and FlowPoint Secure VPN software includes L2TP
Tunneling, 56-bit DES Encryption, and Diffie-Hellman key exchange.
Check Point VPN-1 reportedly supports the Layer 2 Tunneling Protocol (L2TP
) client embedded in all current and future iPhone versions, providing customers with IPsec virtual private network (VPN) access to corporate servers.