Netgear FVS318N – Prosafe Wireless N VPN Firewall 参照マニュアル

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Virtual Private Networking Using IPSec and L2TP Connections
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 ProSAFE Wireless-N 8-Port Gigabit VPN Firewall FVS318N
Authentication Method
Select one of the following radio buttons to specify the authentication method:
Pre-shared key. A secret that is shared between the wireless VPN firewall 
and the remote endpoint.
RSA-Signature. Uses the active self-signed certificate that you uploaded on 
the Certificates screen (see 
319). The pre-shared key is masked out when you select 
RSA-Signature.
Pre-shared key
A key with a minimum length of 8 characters and no more 
than 49 characters. Do not use a double quote (''), single 
quote('), or space in the key.
Diffie-Hellman (DH) 
Group
The DH Group sets the strength of the algorithm in bits. The higher the group, the 
more secure the exchange. From the drop-down list, select one of the following 
three strengths:
Group 1 (768 bit)
Group 2 (1024 bit). This is the default setting.
Group 5 (1536 bit)
Note:
 
Ensure that the DH Group is configured identically on both sides.
SA-Lifetime (sec)
The period in seconds for which the IKE SA is valid. When the period times out, 
the next rekeying occurs. The default is 28800 seconds (eight hours).
Enable Dead Peer 
Detection
Note:
 
See also 
Select a radio button to specify whether Dead Peer Detection (DPD) is enabled:
Yes. This feature is enabled. When the wireless VPN firewall detects an IKE 
connection failure, it deletes the IPSec and IKE SA and forces a 
reestablishment of the connection. You need to specify the detection period in 
the Detection Period field and the maximum number of times that the wireless 
VPN firewall attempts to reconnect in the Reconnect after failure count field.
No. This feature is disabled. This is the default setting.
Detection Period
The period in seconds between consecutive 
DPD R-U-THERE messages, which are sent only when the 
IPSec traffic is idle.
Reconnect after 
failure count
The maximum number of DPD failures before the wireless 
VPN firewall tears down the connection and then attempts to 
reconnect to the peer. The default is three failures.
Table 52.  Add IKE Policy screen settings (continued)
Setting
Description