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WebApp: Slow system responses when using web proxy

This article is about product releases

ALVAO Asset Management, ALVAO Service Desk 10.0 and higher

Symptoms

Even simple actions can take tens of seconds. For example, adding new solvers to a service.

Cause

The cause is a bug in ALVAO products.

Solution

Fix planned for release ALVAO 26.3 Patch (Q3 2026)

Workaround

1. Modify the hosts file on the web server (quick workaround)
   1. On the server where the ALVAO WebApp is running, open the file: C:\Windows\System32\drivers\etc\hosts
   2. Add a line with the IP address of the Sophos WAF: 192.168.x.x sophos-waf.yourdomain.local
   3. Windows checks the hosts file before querying a DNS server, so GetHostEntry returns the result immediately without waiting.
2. Create a PTR record in the internal DNS (proper permanent solution)
   1. On the internal DNS server (typically Active Directory DNS), create a PTR record in the reverse in-addr.arpa zone for the Sophos WAF IP address.
   2. Example for IP 192.168.10.50:
      1. Open DNS Manager.
      2. Navigate to Reverse Lookup Zones and find the corresponding zone (e.g., 10.168.192.in-addr.arpa).
      3. Create a new PTR record: IP 50 → hostname sophos-waf.yourdomain.local.
   3. DNS resolution will then complete within milliseconds instead of timing out.

Issue number

T201207ALVAO