5.1.2.2 Specify Remote TCP Server ........................................................................................................................................................................................... 191
5.1.2.3 Operation Mode – TCP Server ...................................................................................................................................................................................... 192
5.1.2.4 Specify TCP Clients for TCP Server Access ..................................................................................................................................................................... 193
5.1.2.5 Operation Mode – UDP ................................................................................................................................................................................................. 194
5.1.2.6 Specify Remote UDP ..................................................................................................................................................................................................... 195
5.1.2.7 Operation Mode – RFC-2217 ........................................................................................................................................................................................ 196
5.1.2.8 Specify Remote Host for Access .................................................................................................................................................................................... 197
6 Security ............................................................................................................................................................................... 199
6.1 VPN ................................................................................................................................................................................................................. 199
6.1.1 IPSec .................................................................................................................................................................................................... 199
6.1.1.1 IPSec Tunnel Scenarios ................................................................................................................................................................................................. 200
6.1.1.2 Site to Site with "Full Tunnel" enabled .......................................................................................................................................................................... 201
6.1.1.3 Site to Site with "Hub and Spoke" mechanism .............................................................................................................................................................. 201
6.1.1.4 Dynamic VPN Server Scenario ....................................................................................................................................................................................... 202
6.1.1.5 Authentication .............................................................................................................................................................................................................. 204
6.1.1.6 IKE Phase ...................................................................................................................................................................................................................... 205
6.1.1.7 IKE Proposal Definition ................................................................................................................................................................................................. 206
6.1.1.8 IPSec Phase ................................................................................................................................................................................................................... 207
6.1.1.9 IPSec Proposal Definition .............................................................................................................................................................................................. 207
6.1.1.10 Manual Key Management ............................................................................................................................................................................................. 208
6.1.1.11 Create/Edit Dynamic VPN Server List ............................................................................................................................................................................ 210
6.1.2 OpenVPN ............................................................................................................................................................................................. 212
6.1.2.1 OpenVPN TUN Scenario ................................................................................................................................................................................................ 213
6.1.2.2 OpenVPN TAP Scenario ................................................................................................................................................................................................. 214
6.1.2.3 Enable OpenVPN ........................................................................................................................................................................................................... 214
6.1.2.4 OpenVPN Server ........................................................................................................................................................................................................... 215
6.1.2.5 Advanced Configuration ............................................................................................................................................................................................... 218
6.1.2.6 OpenVPN Client ............................................................................................................................................................................................................ 219
6.1.3 L2TP ..................................................................................................................................................................................................... 223
6.1.3.1 L2TP tunnel. .................................................................................................................................................................................................................. 224
6.1.3.2 L2TP Setting .................................................................................................................................................................................................................. 225
6.1.3.3 Enable L2TP .................................................................................................................................................................................................................. 225
6.1.3.4 L2TP Server ................................................................................................................................................................................................................... 225
6.1.3.5
L2TP Server Status list
................................................................................................................................................................................................. 226
6.1.3.6
L2TP User Accounts
..................................................................................................................................................................................................... 226
6.1.3.7 L2TP as a Client ............................................................................................................................................................................................................. 227
6.1.3.8 Enable L2TP .................................................................................................................................................................................................................. 227
6.1.3.9 Create/Edit L2TP Client ................................................................................................................................................................................................. 228
6.1.4 PPTP .................................................................................................................................................................................................... 231
6.1.4.1 PPTP Setting .................................................................................................................................................................................................................. 232
6.1.4.2
PPTP Server Status list
................................................................................................................................................................................................. 234
6.1.5 GRE ...................................................................................................................................................................................................... 237
6.1.5.1 Enable GRE ................................................................................................................................................................................................................... 238
6.1.5.2 Create/Edit GRE Tunnel ................................................................................................................................................................................................ 239
6.2
Firewall
........................................................................................................................................................................................................... 242
6.2.1 Packet filters ........................................................................................................................................................................................ 242
6.2.1.1 Packet Filter with White List Scenario ........................................................................................................................................................................... 242
6.2.1.2 Packet Filter Settings .................................................................................................................................................................................................... 243
6.2.1.3 Create/Edit Packet Filter Rules...................................................................................................................................................................................... 243
6.2.2 URL Blocking ........................................................................................................................................................................................ 246
6.2.2.1 URL Blocking Rule with Black List .................................................................................................................................................................................. 246
6.2.2.2 URL Blocking Settings .................................................................................................................................................................................................... 247
6.2.2.3 Create/Edit Packet Filter Rules...................................................................................................................................................................................... 248
6.2.3 Content Filter ...................................................................................................................................................................................... 249
6.2.3.1 Content Filter Scenario ................................................................................................................................................................................................. 250
6.2.3.2 Content Filter Settings .................................................................................................................................................................................................. 250
6.2.3.3 Create/Edit Content Filter
Rules ................................................................................................................................................................................... 251
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