Problem: Security groups with rules that allow unrestricted access (0.0.0.0/0) to specific ports. Solution: Restrict access to only those IP addresses that require it. To restrict access to a specific IP address, set the suffix to /32 (for example, 192.0.2.10/32). Be sure to delete overly permissive rules after creating rules that are more restrictive. Details: Accessing to port 20 - 22 is unrestricted. 確認のポイント 接続元IP制限が緩いセキュリティグループポリ シーが存在しないか?
Sessions 20 Hours of Networking “Hands down the most beneficial and attendee focused conference I have attended!” – Michael Mills, Senior Consultant, Booz Allen Hamilton 本日、登録をお願いします! conf.splunk.com .conf19 October 21-24, 2019 Splunk University October19-21, 2019 Las Vegas, NV The Venetian Sands Expo October 21-24