Solving Asymmetric Routing: Accessing LAN Devices with Misconfigured Gateways

 

Issue:

Managed switch at 192.168.1.2 was reachable via ARP but "filtered" on all ports during Nmap scans over OpenVPN. The switch had a misconfigured Default Gateway (.254 instead of .1.1), causing a routing dead-end where the switch could receive packets but couldn't route replies back to the 10.8.0.0/24 VPN subnet.

Temporary Resolution (VPN):

Implemented a Hybrid Outbound NAT rule in pfSense on the LAN interface. This masqueraded VPN traffic as coming from the LAN interface IP (192.168.1.1), tricking the switch into responding to a local address. Once GUI access was gained, the System Default Gateway was corrected to 192.168.1.1 and saved to flash.

Resolution:

Update switch gateway to correct gateway. In this case it was .254 to .1

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UPS WorldShip - Cannot Move Backup Data to New Machine

Issue:

Cannot move customer data from one machine to another without multiple useless errors.

Resolution:

As per UPS tech support, both previous and new application must be the same version. You must upgrade the old version in multiples of two versions at a time. Thanks UPS😒

Download links as per TS in order to upgrade v2016 ➡️ v2026 (also keep in mind, their versioning in the file name does not match the program year):

(1) https://download.worldshipmedia.com/production/WS21_0_24_0_ENU.exe
(2) https://download.worldshipmedia.com/production/2020_wwe/WS2020_23_8.exe
(3) https://download.worldshipmedia.com/production/WS24_0_24_0_ENU.exe
(4) https://download.worldshipmedia.com/production/WS28_0_905_0_ENU.exe

LATEST as of 05.06.26:

(5) https://download.worldshipmedia.com/production/WS29_0_105_0_ENU.exe

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1. Do upgrades --> Support Tab (old machine) --> Move Data

2. Export, pack, move data to new machine, unpack, point WorldShip installer at old data on new machine.

Default Backup Data Location: C:\UPS\WSTD\Support\DBSupport

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