Watchguard XTM 2 Series, XTM 3 Series, XTM 5 Series, XTM 8 Series – Fireware XTM OS 11.5.2 – CSP2 Build # 339057
11.5.2 – CSP2 Build # 339057 Resolves the following issues:
BUG66110: TCP Conntrack Lifetime ~2 minutes in Active/Active cluster
BUG66008: A/P cluster crashes on fail back
Improved proxy throughput on XTM 1050 and XTM 8 series by increasing the total_queue_threshold and tcp_drop_threshold values to prevent congestion. new values are: 50M -> 100M for XTM8 and 125M -> 250M for XTM1050
RFE61394: Wireless HotSpot redirect acceptance page to use HTTP
You can request 11.5.2 – CSP2 Build # 339057 from Watchguard Support by logging a support case online, they should then be able to provide an ftp download link and appropriate credentials.
Please note that Watchguard CSP releases are cumulative so you should only need to apply the latest to ensure that you also have any previous fixes.