我是Linux新手，我拥有安装了Cloud Linux的服务器。
我喜欢做的是安装tcpdump，但我不能。
我尝试从SSH执行以下命令：
yum install tcpdump 但是我收到以下消息：
Loaded plugins: fastestmirror, rhnplugin Profilename: myserver.host.ext Not licensed There was an error communicating with CLN. CLN support will be disabled. Error Message: Service not enabled for system profile: "myserver.host.ext" Error Class Code: 31 Error Class Info: This system does not have a valid entitlement for Red Hat Network. Please visit https://cln.cloudlinux.com/rhn/systems/SystemEntitlements.do or login at https://cln.cloudlinux.com, and from the "Overview" tab, select "Subscription Management" to enable RHN service for this system. Explanation: Your organization does not have enough Management entitlements to register this system to CloudLinux Network. Please notify your organization administrator of this error. You should be able to register this system after your organization frees existing or purchases additional entitlements. Additional entitlements may be purchased by your organization administrator by logging into CloudLinux Network and visiting the 'Subscription Management' page in the 'Your RHN' section of RHN. A common cause of this error code is due to having mistakenly setup an Activation Key which is set as the universal default. If an activation key is set on the account as a universal default, you can disable this key and retry to avoid requiring a Management entitlement. Loading mirror speeds from cached hostfile cr | 2.9 kB 00:00 Setting up Install Process No package tcpdump available. Error: Nothing to do
那么，有没有办法在云linux上安装tcpdump？ 如何 ？
亲切的问候 ！
看来你的云linux服务器还没有注册。 在使用yum安装包之前，您可能需要先注册它。 请查看如何注册您的Cloud Linux服务器的文档http://docs.cloudlinux.com/registering_cloudlinux_server.html