Draytek Vigor2760 User Manual page 274

VJ Compression
Security Method
Authentication Method
Advanced
Encryption box will appear. If you check this box, the local
end will only accept the data sent with the encryption of
128-bit from the remote end. If not, the local end will only
accept the data send without encryption. This option 128-bit
indicates that the router will use the MPPE encryption scheme
with maximum bits (128-bit) to encrypt the data.

MPPE Encryption – 128-bit - It means the MPPE
encryption selected by the local end only accepts 128-bit
mechanism. If the remote end chooses Required as
MPPE encryption without enabling 128-bit, the VPN
tunnel between both ends cannot be established. It is very
important to set both ends with the same MPPE
Encryption.
This field is applicable when you select PPTP or L2TP above.
VJ Compression is used for TCP/IP protocol header
compression. Normally set to Yes to improve bandwidth
utilization.
This field is applicable when you select L2TP as server type
and check the box of L2TP over IPSec or select DHCP over
IPsec as server type.
Currently, the default setting is ESP.
This field is applicable when you select L2TP as server type
and check the box of L2TP over IPSec or select DHCP over
IPsec as server type.
If you choose Pre-shared Key, you have to configure,
Pre-shared Key - Type 1-63 characters as pre-shared key.
Confirm Pre-shared Key - Type the pre-shared key again for
confirmation.
If you choose Digital Certificate, you have to configure the
following settings for both local end and remote end.
Local Certificate – Choose a certificate profile used for Vigor
router. The certificate profile is defined in Certificate
Management>>Local Certificate.
Peer Certificate – Choose a certificate profile used for remote
end. Such certificate profile is defined in Certificate
Management>>Remote Certificate.
This field is applicable when you select L2TP as server type
and the function of L2TP over IPsec enabled. Click the small
triangle to unfold the available setting items.
Local ID (optional) and Peer ID (optional) - This option is
available when Pre-shared Key is selected as Authentication
Method above. You can define a name to be used by local user
and the peer user. If no name specified here, the system will
use My WAN IP as the local ID and the Remote Host as the
Peer ID configured in this web page.
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Vigor2760 Series User's Guide