![ZyXEL Communications SBG5500-A Скачать руководство пользователя страница 184](http://html1.mh-extra.com/html/zyxel-communications/sbg5500-a/sbg5500-a_user-manual_944297184.webp)
Chapter 10 VPN
SBG5500 Series User’s Guide
184
(2) Client loses connectivity to the SBG for a period of time.
(3) Any IPsec VPN configuration change is applied on the SBG.
(4) Either
Default_L2TP_VPN_GW
IPsec configuration or L2TP VPN is disabled on the SBG.
(5) When any one of these configuration changes is applied on the SBG: WAN Interface used for L2TP
VPN, IP Address Pool, Access Group.
(6) The SBG WAN interface on which the L2TP connection established is disconnected.
5
An L2TP client is connected successfully but cannot access the local host or server behind the SBG.
Tip:
This may be caused by one of the followings:
(1) The local host or server is disconnected.
(2) The Access Group is not configured correctly. From the SBG’s GUI, go to the
VPN
>
L2TP VPN
screen
to check. Note that all local hosts are by default accessible unless Access Group is configured.
(3)
IP Address Pool
for L2TP VPN is conflicting with any WAN, LAN, DMZ, WLAN, or PPTP VPN subnet
configured on the SBG. Note that
IP Address Pool
for L2TP VPN has 24-bit netmask and should not
conflict with any others listed above even if they are not in use.
6
An L2TP client is connected successfully but cannot browse Internet.
Tip:
From the SBG’s GUI, click
VPN
>
L2TP VPN
. Check if DNS Server is configured. A client cannot browse
Internet without DNS resolved. Note that when a new DNS Server is configured, the client must
disconnect then reconnect in order for the new DNS Server to take effect.
7
The L2TP client can no longer connect to SBG after the
Encryption
or
Authentication
for the
Default_L2TP_VPN_GW
IPsec VPN rule is changed.
Tip:
A user usually do not need change the default
Encryption
or
Authentication
algorithms in the
Default_L2TP_VPN
IPsec VPN rule. The default
Encryption
and
Authentication
algorithms should support
the built-in L2TP/IPsec client software in the popular operating systems (Windows (XP, Vista, 7), Android,
and iOS).
Refer to
for the default setting of the
Default_L2TP_VPN_GW
IPsec VPN rule.
As a reference,
lists the IPsec proposals provided by a built-in L2TP client in the
popular operating systems during IPsec phase 1 negotiation. The first proposal that can be supported by
the phase 1 setting in the
Default_L2TP_VPN_GW
IPsec VPN rule will be accepted by the SBG. The
indicate the ones that will be accepted based on
.
Table 76 Phase 1 IPsec proposals provided by the built-in L2TP client in popular operating systems
(Encryption/Authentication/Key Group)
WINDOWS XP
WINDOWS VISTA
WINDOWS 7
IOS 5.1
ANDROID 4.1
1
3DES/SHA1/DH15
3DES/SHA1/DH15
AES/SHA1/DH15
AES/SHA1/DH2
AES/SHA1/DH2
2
3DES/SHA1/DH2
3DES/SHA1/DH2
3DES/SHA1/DH15
AES/MD5/DH2
AES/MD5/DH2
3
3DES/MD5/DH2
3DES/SHA1/DH2
3DES/SHA1/DH2
3DES/SHA1/DH2
4
DES/SHA1/DH1
3DES/MD5/DH2
3DES/MD5/DH2
Содержание SBG5500-A
Страница 12: ...12 PART I User s Guide...
Страница 44: ...44 PART II Technical Reference...
Страница 58: ...Chapter 5 WAN Internet SBG5500 Series User s Guide 58 Figure 49 WAN Internet WAN Setup Add Edit Routing Mode...
Страница 69: ...Chapter 5 WAN Internet SBG5500 Series User s Guide 69 Figure 53 Configuration WAN Internet Mobile...