JIRA is under attack, requesting assistance

[Andrew]

 Version: Atlassian Jira Project Management Software (v8.20.3)

Server alarm log: Network traffic content ->GET plugins/servlet/gadgets/makeRequest?url=http:/47.92.118.252:8080@dutyzu.s0xcn HTTP/1.1 Host:47.92.118.252:8080 User-Agent: Mozila/5.0 (Windows NT 10.0: Win64; x64) AppleWebkit/537.36 (KHTML, like Gecko)Chrome/66.6.2333.33 Safari/537.36 AliyunTaiShiGanZhi https://www.aliyun.com/product/sas Accept-Encoding: gzip.deflate Accept: / Connection: keep-alive X-Atlassian-Token: no-check Accept-Language: zh-CN,zh;g=0.8

Please note that the JIRA/JSM software is deployed independently on our server, and we have a valid license for it. 

[Nic Brough -Adaptavist-]

Welcome to the Atlassian Community!

I can't run an image through a translator, so I have no idea what the details of this attack might be, even whether it's a hijack, tunnelling, or denial-of-service attack.

But a DNSlog attack is not something that an application should be dealing with.  You need to fix your network, such that it blocks or at least throttles DNSlog attacks.  The Atlassian community can't help you with this really, it's not an Atlassian problem.