Is that Azure application gateway supports TCP catching ?

Question

Is that Azure application gateway supports TCP catching ?

Answer 1

Hello @John
I think you are interesting in TCP packet capture.

Unfortunately there is no native Packet capture support in Application gateway, but you can use diagnostic logs

1. Access log - This includes the caller's IP, requested URL, response latency, return code, and bytes in and out.
2. Performance log: This log captures performance information for each instance, including total requests served, throughput in bytes, total requests served, failed request count, and healthy and unhealthy back-end instance count.

3.Firewall Log: You can use this log to view the requests that are logged through either detection or prevention mode of an application gateway that is configured with the web application firewall.

https://learn.microsoft.com/en-us/azure/application-gateway/application-gateway-diagnostics#diagnostic-logging

You can create feature request in http://feedback.azure.com/ so it could be considered and implemented in future

Answer 2

I have few queries.

1. Does Azure application gateway supports TCP caching and connection pooling ?
2. If it is possible then before enabling or doing anything for TCP caching and connection pooling in Azure application gateway do
   we need any downtime ?
3. if we enable it what can be the drawbacks and will it be any issues in enabling it, if it is available ?

Answer 3

@John

We don't support caching for App GW or customer configurable connection pooling. Could you explain your use case so I understand better what you are looking for?