ZyXEL Communications ZyWALL 310 - What Could Go Wrong

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3. Go to ZyWALL/USG MONITOR > VPN Monitor > L2TP over IPSec and verify the Current

L2TP Session.

MONITOR > VPN Monitor > L2TP over IPSec > L2TP_Remote_Users

4. Go to iOS operating system Start > Settings > Network & Internet > VPN and show

Connected status.

Menu > Settings > VPN > ZyXEL_L2TP

What Could Go Wrong?

1. If you see [alert] log message such as below, please check ZyWALL/USG L2TP

Allowed User or User/Group Settings. iOS users must use the same Username and

Password as configured in ZyWALL/USG to establish the L2TP VPN.

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Default Chapter2
- Table of Contents2
How to Configure Site-To-Site Ipsec VPN with Amazon VPC17
- Set up the Ipsec VPN Tunnel on the Amazon VPC18
- Set up the Ipsec VPN Tunnel on the Zywall/Usg22
- Test the Ipsec VPN Tunnel26
- What Could Go Wrong27
How to Configure Site-To-Site Ipsec VPN with Microsoft (MS) Azure29
- Set up the Ipsec VPN Tunnel on the Zywall/Usg30
- Set up the Ipsec VPN Tunnel on the MS Azure36
- Test the Ipsec VPN Tunnel45
- What Could Go Wrong47
How to Configure GRE over Ipsec VPN Tunnel50
- Set up the Zywall/Usg GRE over Ipsec VPN Tunnel of Corporate Network (HQ)51
- Set up the Zywall/Usg GRE over Ipsec VPN Tunnel of Corporate Network (Branch)55
- Test the GRE over Ipsec VPN Tunnel60
- What Could Go Wrong60
How to Configure Site-To-Site Ipsec VPN Where the Peer Has a Static IP Address62
- Set up the Zywall/Usg Ipsec VPN Tunnel of Corporate Network (HQ)62
- Set up the Zywall/Usg Ipsec VPN Tunnel of Corporate Network (Branch)66
- Test the Ipsec VPN Tunnel70
- What Could Go Wrong71
How to Configure Site-To-Site Ipsec VPN Where the Peer Has a Dynamic IP Address73
- Set up the Zywall/Usg Ipsec VPN Tunnel of Corporate Network (HQ)73
- (Branch Has a Dynamic IP Address)77
- Test the Ipsec VPN Tunnel81
- What Could Go Wrong82
How to Configure Ipsec Site to Site VPN While One Site Is Behind a NAT Router84
- Set up the Zywall/Usg Ipsec VPN Tunnel of Corporate Network (HQ)84
- Set up the Zywall/Usg Ipsec VPN Tunnel of Corporate Network (Branch)88
- Set up the NAT Router (Using Zywall USG Device in this Example)91
- Test the Ipsec VPN Tunnel93
- What Could Go Wrong94
How to Configure Hub-And-Spoke Ipsec VPN96
- Set up the Ipsec VPN Tunnel on the Zywall/Usg by Using VPN Concentrator Hub_Hq-To-Branch_A97
- Hub_Hq-To-Branch_B101
- Hub_Hq Concentrator104
- Spoke_Branch_A106
- Spoke_Branch_B111
- Test the Ipsec VPN Tunnel115
- What Could Go Wrong118
- Set up the Ipsec VPN Tunnel of Zywall/Usg Without Using VPN Concentrator Hub_Hq-To-Branch_A119
- Hub_Hq-To-Branch_B122
- Spoke_Branch_A125
- Spoke_Branch_B128
- Test the Ipsec VPN Tunnel131
- What Could Go Wrong133
How to Use Dual-WAN to Perform Fail-Over on VPN Using the VPN Concentrator135
- Set up the Ipsec VPN Tunnel on the Zywall/Usg Hub_Hq-To-Branch_A136
- Hub_Hq-To-Branch_B139
- Hub_Hq Concentrator142
- Spoke_Branch_A143
- Spoke_Branch_B147
- Test the Ipsec VPN Tunnel151
- What Could Go Wrong153
How to Configure Ipsec VPN with Zywall Ipsec VPN Client156
- Set up the Zywall/Usg Ipsec VPN Tunnel157
- Set up the Zywall Ipsec VPN Client161
- Test the Ipsec VPN Tunnel165
- What Can Go Wrong166
How to Configure Site-To-Site Ipsec VPN with Fortigate169
- Set up the Ipsec VPN Tunnel on the Zywall/Usg169
- Set up the Ipsec VPN Tunnel on the Fortigate173
- Test the Ipsec VPN Tunnel178
- What Could Go Wrong179
How to Configure Site-To-Site Ipsec VPN with Watchguard181
- Set up the Ipsec VPN Tunnel on the Zywall/Usg182
- Set up the Ipsec VPN Tunnel on the Watchguard185
- Test the Ipsec VPN Tunnel192
- What Could Go Wrong194
How to Configure Site-To-Site Ipsec VPN with Cisco196
- Set up the Ipsec VPN Tunnel on the Zywall/Usg197
- Set up the Ipsec VPN Tunnel on the Cisco203
- Test the Ipsec VPN Tunnel208
- What Could Go Wrong210
How to Configure Site-To-Site Ipsec VPN with a Sonicwall Router212
- Set up the Ipsec VPN Tunnel on the Zywall/Usg213
- Set up the Ipsec VPN Tunnel on the Sonicwall220
- Test the Ipsec VPN Tunnel224
- What Could Go Wrong226
How to Configure Ipsec VPN Failover229
- Set up the Zywall/Usg Ipsec VPN Tunnel of Corporate Network (HQ)230
- (Branch)233
- Set up the WAN Trunk (Zywall/Usg_Hq)237
- Set up the Failover Command Line (Zywall/Usg HQ)238
- Test the Ipsec VPN Tunnel240
- What Could Go Wrong241
How to Configure L2TP over Ipsec VPN While the Zywall/Usg Is Behind a NAT Router243
- Set up the L2TP VPN Tunnel on the Zywall/Usg_Hq244
- Set up the NAT Router (Using Zywall USG Device in this Example)248
- Test the L2TP over Ipsec VPN Tunnel251
- What Could Go Wrong254
How to Configure L2TP VPN with Android 5.0 Mobile Devices256
- Set up the L2TP VPN Tunnel on the Zywall/Usg257
- Set up the L2TP VPN Tunnel on the Android Device261
- Test the L2TP over Ipsec VPN Tunnel265
- What Could Go Wrong267
How to Configure L2TP VPN with Ios 8.4 Mobile Devices269
- Set up the L2TP VPN Tunnel on the Zywall/Usg269
- Set up the L2TP VPN Tunnel on the Ios Device275
- Test the L2TP over Ipsec VPN Tunnel276
- What Could Go Wrong279
How to Import Zywall/Usg Certificate for L2TP over Ipsec in Windows 10281
- Set up the L2TP VPN Tunnel on the Zywall/Usg281
- 10 Operating System286
- Export a Certificate from Zywall/Usg and Import It to Windows286
- Set up the L2TP VPN Tunnel on the Windows 10292
- Test the L2TP over Ipsec VPN Tunnel296
- What Could Go Wrong298
How to Import Zywall/Usg Certificate for L2TP over Ipsec in IOS Mobile Phone300
- Set up the L2TP VPN Tunnel on the Zywall/Usg300
- Export a Certificate from Zywall/Usg and Import It to Ios Mobile Phone304
- Set up the L2TP VPN Tunnel on the Ios Mobile Device305
- Test the L2TP over Ipsec VPN Tunnel308
- What Could Go Wrong309
How to Import Zywall/Usg Certificate for L2TP over Ipsec in Android Mobile Phone311
- Set up the L2TP VPN Tunnel on the Zywall/Usg311
- Export a Certificate from Zywall/Usg and Import It to Android Mobile Phone316
- Set up the L2TP VPN Tunnel on the Android Mobile Device317
- Test the L2TP over Ipsec VPN Tunnel320
- What Could Go Wrong322
How to Configure the L2TP VPN with Apple MAC os X 10.11 Operating System324
- Set up the L2TP VPN Tunnel on the Zywall/Usg324
- Operating System330
- Test the L2TP over Ipsec VPN Tunnel332
- What Could Go Wrong334
How to Configure if I Want User Can Only See SSL VPN Login Button in Web Portal Login Page336
- Set up the DNS Service337
- Set up the Zywall/Usg SSL VPN Setting337
- Set up the Zywall/Usg System Setting338
- Test the SSL VPN339
How to Deploy SSL VPN with Windows 10 Operating System343
- Set up the SSL VPN Tunnel on the Zywall/Usg344
- Set up the SSL VPN Tunnel on the Windows 10 Operating System348
- Test the SSL VPN Tunnel352
- What Could Go Wrong353
How to Deploy SSL VPN with Apple Mac os X 10.10 Operating System354
- Set up the SSL VPN Tunnel on the Zywall/Usg355
- Set up the SSL VPN Tunnel on the Apple MAC os X 10.10 Operating System360
- Test the SSL VPN Tunnel364
- What Could Go Wrong367
How to Configure SSL VPN for Remote Access Mobile Devices369
- Set up the SSL VPN Tunnel on the Zywall/Usg369
- Test the SSL VPN Tunnel372
- What Could Go Wrong375
How to Configure an SSL VPN Tunnel (with Secuextender Version 4.0.0.1) on the Windows 10 Operating System376
- Set up the SSL VPN Tunnel with Windows 10376
- What Can Go Wrong380
How to Redirect Multiple LAN Interface Traffic to the VPN Tunnel382
- Set up the Zywall/Usg Ipsec VPN Tunnel of Corporate Network (HQ)383
- Set up the Zywall/Usg Ipsec VPN Tunnel of Corporate Network (Branch)386
- Set up the Policy Route (Zywall/Usg_Hq)389
- Set up the Policy Route (Zywall/Usg_Branch)390
- Test the Ipsec VPN Tunnel391
- What Could Go Wrong393
How to Create VTI and Configure VPN Failover with VTI395
- VTI Deployment Flow395
- Set up the Zywall/Usg VTI of Corporate Network (HQ)396
- Set up the Zywall/Usg VTI of Corporate Network (Branch)401
- Test the Ipsec VPN Tunnel407
- What Can Go Wrong409
How to Configure the USG When Using a Cloud Based SIP System411
- Set up the SIP ALG412
- Test Result413
- What Could Go Wrong413
How to Block HTTPS Websites by Domain Filter Without Applying SSL Inspection414
- Set up the Content Filter on the Zywall/Usg415
- Set up the Security Policy on the Zywall/Usg417
- Set up the System Policy on the Zywall/Usg417
- Test the Result418
How to Configure Content Filter 2.0 with Geo IP Blocking420
- Set up the Address Objet with Geo IP on the Zywall/Usg421
- Set up the Security Policy on the Zywall/Usg422
- Test the Result423
- What Could Go Wrong424
How to Configure Content Filter 2.0 with Https Domain Filter425
- Application Scenario425
- Set up the Content Filter on the Zywall/Usg425
- Set up the Security Policy on the Zywall/Usg427
- Set up the System Policy on the Zywall/Usg428
- Test the Result429
- What Could Wrong430
How to Block the Client Accessing to Certain Country Using Geo IP and Content Filter431
- Check Geo IP License Status on the Zywall/Usg432
- Set up the Address Objet with Geo IP on the Zywall/Usg432
- Set up the Security Policy on the Zywall/Usg433
- Test the Result434
How to Set up Link Aggregation Group (LAG)437
- Set up the Active-Backup, 802.3Ad, Balance-Alb437
- Set up the Active-Backup Mode441
- Test the Result443
- What Can Go Wrong443
How to Restrict Web Portal Access from the Internet444
- Set up the Zywall/Usg System Setting445
- Test the Web Access446
How to Setup and Configure Daily Report448
- Set up the Zywall/Usg Email Daily Report Setting449
- Test the Daily Log Report450
- What Could Go Wrong451
How to Setup and Configure Email Logs452
- Set up the Zywall/Usg Email Logs Setting452
- Test the Email Log454
- What Could Go Wrong455
How to Setup and Send Logs to a Syslog Server456
- Set up the Syslog Server (Use Papertrail Syslog in this Example)456
- Set up the Zywall/Usg Remote Server Setting459
- Test the Remote Server460
- What Could Go Wrong461
How to Setup and Send Logs to a Vantage Reports Server462
- Set up the VRPT Server463
- Set up the Zywall/Usg Remote Server Setting466
- Test the Remote Server466
- What Could Go Wrong467
How to Setup and Send Logs to the USB Storage468
- Set up the USB System Settings469
- Set up the USB Log Storage469
- Check the USG Log Files470
How to Activate a Free Access Hotspot471
- Set up the Free Access Hotspot472
- Test the User Agreement and Advertisement Webpage474
- What Could Go Wrong475
- Set up Enable the Free Time Feature476
- Test Free Time Feature481
- What Can Go Wrong484
How to Setup Ipv6 Interfaces for Pure Ipv6 Routing486
- Setting up the Ipv6 Interface487
- Set up the Prefix Delegation and Router Advertisement489
- Test493
- What Can Go Wrong493
- Test495
How to Perform and Use the Packet Capture Feature on the Zywall/Usg496
- Set up the Packet Capture Feature497
- Check the Capture Files499
How to Automatically Reboot the Zywall/Usg by Schedule501
- Set up the Shell Script502
- Set up the Schedule Run503
- Check the Reboot Status504
How to Schedule Youtube Access506
- Set up the Schedule on the Zywall/Usg506
- Create the Application Objects on the Zywall/Usg507
- Set up the Application Patrol Profile on the Zywall/Usg508
- Set up SSL Inspection on the Zywall/Usg509
- Set up the Security Policy on the Zywall/Usg509
- Export Certificate from Zywall/Usg and Import It to Windows 7 Operation System510
- Test the Result516
- What Could Go Wrong516
How to Continuously Run a Zysh Script518
- Set up the Shell Script519
- Set up the Schedule Run520
- Check the Result521
How to Register Your Device and Services at Myzyxel.com523
- Account Creation524
- Device Registration526
- Service Registration (in the Case of Standard License)527
- Device Management (in the Case of Registering Bundled Licenses)528
- Refresh Service529
- What Could Go Wrong529
How to Exempt Specific Users from Security Control531
- Set up the Security Policy on the Zywall/Usg for Employees532
- Set up the Security Policy on the Zywall/Usg for Executives533
- Test the Result536
- What Could Go Wrong537
How to Detect and Prevent TCP Port Scanning with ADP538
- Set up the ADP Profile on the Zywall/Usg539
- Test the Result542
- What Could Go Wrong543
How to Block Facebook544
- Set up the Content Filter on the Zywall/Usg545
- Set up the SSL Inspection on the Zywall/Usg545
- Set up the Security Policy on the Zywall/Usg546
- Export Certificate from Zywall/Usg and Import It to Windows 7 Operation System548
- Test the Result553
- What Could Go Wrong554
How to Exempt Specific Users from a Blocked Website555
- Set up the Security Policy on the Zywall/Usg for Employees556
- Set up the Security Policy on the Zywall/Usg for Executives557
- Test the Result560
- What Could Go Wrong560
How to Control Access to Google Drive561
- Set up the Application Patrol on the Zywall/Usg562
- Set up the SSL Inspection on the Zywall/Usg564
- Set up the Security Policy on the Zywall/Usg565
- Export Certificate from Zywall/Usg and Import It to Windows 7 Operation System566
- Test the Result570
- What Could Go Wrong571
How to Block HTTPS Websites Using Content Filtering and SSL Inspection572
- Set up the Content Filter on the Zywall/Usg573
- Set up SSL Inspection on the Zywall/Usg574
- Set up the Security Policy on the Zywall/Usg575
- Export Certificate from Zywall/Usg and Import It to Windows 7 Operation System576
- Test the Result581
- What Could Go Wrong582
How to Block the Spotify Music Streaming Service583
- Set up IDP Profile on the Zywall/Usg584
- Test the Result585
- What Could Go Wrong586
How to Test the EICAR Anti-Virus Test File587
- Set up the Anti-Virus Profile on the Zywall/Usg588
- Set up the Security Policy on the Zywall/Usg589
- Test the Result590
- What Could Go Wrong591
How to Block Downloading of DOC, PDF, XLS and ZIP Files592
- Set up the Anti-Virus Profile on the Zywall/Usg593
- Set up the Security Policy on the Zywall/Usg595
- Test the Result596
- What Could Go Wrong597
How to Configure an Anti-Spam Policy with Mail Scan and DNSBL599
- Set up the Anti-Spam Profile on the Zywall/Usg600
- Set up the Security Policy on the Zywall/Usg603
- Test the Result604
- What Could Go Wrong605
How to Configure Bandwidth Management for FTP and HTTP Traffic606
- Set up the Bandwidth Management for FTP on the Zywall/Usg607
- Set up the Bandwidth Management for HTTP on the Zywall/Usg608
- Set up the Bandwidth Management Global Setting on the610
- Zywall/Usg610
- Test the Result610
- What Could Go Wrong611
How to Limit Bittorrent or Other Peer-To-Peer Traffic612
- Set up the Application Patrol Profile on the Zywall/Usg613
- Set up the Bandwidth Management for Bittorrent on the Zywall/Usg614
- Set up the Bandwidth Management Global Setting on the Zywall/Usg616
- Test the Result616
- What Could Go Wrong617
How to Configure a Trunk for WAN Load Balancing with a Static or Dynamic IP Address618
- Set up the Available Bandwidth on WAN1 Interfaces on the Zywall/Usg619
- Set up the Available Bandwidth on WAN2 Interfaces on the Zywall/Usg620
- Set up the WAN Trunk on the Zywall/Usg620
- Test the Result621
- What Could Go Wrong622
How to Configure DNS Inbound Load Balancing to Balance DNS Queries Among Interfaces623
- Set up the DNS Inbound Load Balancing on the Zywall/Usg624
- Set up the NAT Rule on the Zywall/Usg625
- Test the Result626
- What Could Go Wrong627
How to Manage Voice Traffic628
- Set up the SIP ALG on the Zywall/Usg629
- Set up the Bandwidth Management for SIP on the Zywall/Usg629
- Set up the Bandwidth Management for P2P on the Zywall/Usg630
- Set up the Bandwidth Management for FTP on the Zywall/Usg631
- Test the Result633
- What Could Go Wrong634
How to Manage Zywall/Usg Configuration Files635
- Rename the Configuration Files from the Zywall/Usg636
- Download the Configuration Files on the Zywall/Usg637
- Copy the Configuration Files on the Zywall/Usg637
- Apply the Configuration Files on the Zywall/Usg638
- Upload the Configuration Files from the Zywall/Usg639
- What Could Go Wrong640
How to Manage Zywall/Usg Firmware641
- Download the Current Firmware Version from Zyxel.com642
- Upload the Firmware on the Zywall/Usg643
- What Could Go Wrong646
How to Get Started Using the Wizards647
- Set up the Internet Access (Ethernet) Wizard on the Zywall/Usg647
- Set up the Internet Access (Pppoe) Wizard on the Zywall/Usg651
- Set up the Internet Access (PPTP) Wizard on the Zywall/Usg653
- Set up the Wireless Settings Wizard on the Zywall/Usg656
- Set up the Device Registration on the Zywall/Usg658
How to Configure the 3G/LTE Interface on the Zywall/Usg as a WAN Backup660
- Set up the 3G/LTE Interface on the Zywall/Usg661
- Set up the Trunk on the Zywall/Usg662
- Test the Result663
- What Could Go Wrong664
How to Configure Two Different WAN Interfaces with Different IP Addresses in the same VLAN665
- Set up the Port Grouping on the Zywall/Usg666
- Set up the VLAN on the Zywall/Usg666
- Set up the Routing on the Zywall/Usg668
- Test the Result668
- What Could Go Wrong669
How to Let a Server Use the same Public IP Address as the WAN Interface Using the Bridge Interface670
- Set up the Bridge Interface on the Zywall/Usg671
- Test the Result672
- What Could Go Wrong673
How to Allow Public Access to a Server Behind Zywall/Usg674
- Set up the NAT on the Zywall/Usg675
- Set up the Security Policy on the Zywall/Usg675
- Test the Result676
- What Could Go Wrong677
How to Set up a Wifi Network with Zyxel Aps678
- Set up the AP Management on the Zywall/Usg679
- Test the Result681
- What Could Go Wrong681
How to Set up Guest Wifi Network Accounts683
- Set up the Wifi Guest Account, Address Range and Service Rule on the Zywall/Usg684
- Set up the Web Authentication on the Zywall/Usg686
- Set up the Security Policy on the Zywall/Usg687
- Test the Result688
- What Could Go Wrong690
How to Create a Wi-Fi VLAN Interfaces to Separate Staff Network and Guest Network692
- Set up Wi-Fi VLAN Interfaces693
- Test Result700
- What Could Go Wrong701
How to Set up Wifi Networks with Microsoft Active Directory Authentication703
- Set up the Wi-Fi Guest Account and Authentication Method on the Zywall/Usg704
- Set up the Active Directory Server Account on the Zywall/Usg705
- Set up the Security Policy on the Zywall/Usg706
- Test the Result707
- What Could Go Wrong709
How to Set up Ipv6 Interfaces for Pure Ipv6 Routing710
- Enable the Ipv6 on the Zywall/Usg711
- Set up the WAN Ipv6 Interface on the Zywall/Usg711
- Set up the LAN Ipv6 Interface on the Zywall/Usg712
- Test the Result714
- What Could Go Wrong715
How to Set up an Ipv6 6To4 Tunnel716
- Set up the LAN Ipv6 Interface on the Zywall/Usg717
- Set up the 6To4 Tunnel on the Zywall/Usg718
- Test the Result719
- What Could Go Wrong720
How to Set up an Ipv6-In-Ipv4 Tunnel721
- Set up the LAN Ipv6 Interface on the Zywall/Usg722
- Set up the 6To4 Tunnel on the Zywall/Usg723
- Set up the Policy Route on the Zywall/Usg724
- Test the Result725
- What Could Go Wrong726
How to Update Firmware Automatically from a USB Storage727
- Automatic USB Firmware Upgrade Flow727
- Enable the USB Firmware Upgrade Function by CLI Command728
- Save the Firmware on the USB728
- Plug the USB into the Device729
- Firmware Version729
- Check Firmware Status730
- What Can Go Wrong731
How to Configure DHCP Option 60 - Vendor Class Identifier734
- DHCP Option 60 Deployment Flow734
- Setting up DHCP Option 60 on the Web GUI734
- Setting up DHCP Option 60 on the CLI736
- Test DHCP Option 60736
- What Can Go Wrong737
How to Configure Device HA Pro738
- Device HA Pro License739
- Behavior of the Device HA Pro740
- Device-HA Pro Setting Screen740
- Suggestions742
- How Do I Configure Device HA Pro in My Current Environment743
- What Can Go Wrong749

ZyXEL Communications ZyWALL 310 - What Could Go Wrong

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