{"id":14445,"date":"2025-10-30T02:06:34","date_gmt":"2025-10-30T08:06:34","guid":{"rendered":"https:\/\/www.supportpro.com\/blog\/?p=14445"},"modified":"2025-10-30T02:06:37","modified_gmt":"2025-10-30T08:06:37","slug":"runcloud-agent-communication-blocked-fix-the-security-bannedip-error-now","status":"publish","type":"post","link":"https:\/\/www.supportpro.com\/blog\/runcloud-agent-communication-blocked-fix-the-security-bannedip-error-now\/","title":{"rendered":"RunCloud Agent Communication Blocked? Fix the \u2018security-bannedip\u2019 Error Now"},"content":{"rendered":"\n

One fine day, RunCloud Suddenly Stops Talking to Your Server. When this incident occurred. I logged into RunCloud expecting the usual green lights, and instead I saw a red \u201csecurity-bannedip<\/strong>\u201d error. For a second, I thought I\u2019d broken something serious. If you\u2019re seeing the same message<\/p>\n\n\n\n

RunCloud Agent “security-bannedip”. Unable to communicate with Server (x.x.x.x)<\/em><\/p>\n\n\n\n

don\u2019t panic. It almost always comes down to a simple connection issue.<\/p>\n\n\n\n\n\n\n\n

Below is what I\u2019ve learned from fixing this more than once.<\/p>\n\n\n\n

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1. Check whether the Server Is still online<\/strong><\/h3>\n\n\n\n

For this. Open a terminal and ping the server:<\/p>\n\n\n\n

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ping your.server.ip<\/p>\n<\/blockquote>\n\n\n\n

If it doesn\u2019t answer, it\u2019s probably offline or rebooting or under maintenance. When that happens, RunCloud can\u2019t reach it, so the agent gives up. Wait a few minutes or  contact SupportPRO Server Admin<\/a><\/p>\n\n\n\n

2. Look at the Firewall<\/strong><\/h3>\n\n\n\n

Most of the time, the culprit is a firewall rule that\u2019s a little too strict.
RunCloud needs a few doors open to talk to your machine:<\/p>\n\n\n\n

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