How can we disable Virtual Office portal access

07/16/2021 5 People found this article helpful 32,217 Views

Description

The Virtual Office portal is the website access of SSLVPN Services where users log in to launch NetExtender or access internal resources via Bookmarks.

When we enable SSLVPN services for WAN zone, we open default port 4433 on the firewall IP for SSLVPN services, which includes access either via client - NetExtender and SonicWALL Mobile Connect or via web browser - Virtual Office portal. Both access methods require valid credentials (username, password and domain name).

Since both the access methods i.e client - NetExtender, SonicWALL Mobile Connect and web browser - Virtual Office portal, function on the same port and IP, it is not possible to just disable the Virtual Office portal access and keep the client access available. So either we can enable client and web access both or disable both.

However, we can secure the network by using SSL certificates, domain account integration (LDAP, RADIUS, etc), or by restricting access for SSLVPN services to limited source IP addresses.

This article describes how we can restrict SSLVPN access to limited source IP address.

Resolution

Resolution for SonicOS 7.X
This release includes significant user interface changes and many new features that are different from the SonicOS 6.5 and earlier firmware. The below resolution is for customers using SonicOS 7.X firmware.

Resolution/Workaround:

Navigate to Objects | Match objects | Addresses > Address Objects.
Click on Add.
Create Address Object as below :

NOTE: Zone should be "WAN" and "IP Address" should be Public IP of PC from which you want to allow access to SSLVPN.
If you want to allow access from multiple IPs, create Address Objects for all Public IPs as in step 3.
Click on Address Groups.
Click on Add.
Select all the WAN IP address objects created in step 4 and Add them to the Address Group.
Navigate to Policy | Rules and Policy > Access Rules.
Click on Zone Matrix and select WAN to WAN radio button as shown below :
Click on Configure icon for default WAN to WAN access rule for SSLVPN service.

CAUTION: Default rules can only be modified when "Enable the ability to remove and fully edit auto-added access rules " is checked in the internal settings page.
Modify source address from ANY to Address Object / Address Group created in step 3/step 5.
Click SAVE.

Now only the Public IPs mentioned in the Source of Access rule can access SSLVPN services using Netextender and Virtual Office Portal.

Resolution for SonicOS 6.5
This release includes significant user interface changes and many new features that are different from the SonicOS 6.2 and earlier firmware. The below resolution is for customers using SonicOS 6.5 firmware.

Resolution/Workaround:

Navigate to MANAGE | Objects > Address Objects.
Click on Add.
Create Address Object as below :

NOTE: Zone should be "WAN" and "IP Address" should be Public IP of PC from which you want to allow access to SSLVPN.
If you want to allow access from multiple IPs, create Address Objects for all Public IPs as in step 3.
Click on Address Groups.
Click on Add.
Select all the WAN IP address objects created in step 4 and Add them to the Address Group.
Navigate to MANAGE | Rules > Access rules.
Click on Zone Matrix and select WAN to WAN radio button as shown below :
Click on Configure icon for default WAN to WAN access rule for SSLVPN service.

CAUTION: Default rules can only be modified when "Enable the ability to remove and fully edit auto-added access rules " is checked in the internal settings page.
Modify Source from ANY to Address Object / Address Group created in step 3/step 5.
Click OK.

Now only the Public IPs mentioned in the Source of Access rule can access SSLVPN services using Netextender and Virtual Office Portal.