Shulou(Shulou.com)06/02 Report--

Applicable environment centos7 virtual machine

1. Open the virtual machine editing mode, select the virtual network editor, and select the bridge mode.

2. Cancel the other network cards in the automatic settings and select the last network card.

Applicable environment centos6 virtual machine

Possible reason 1: firewall blocking

# service iptables stop

Possible reason 2: sshd service is not enabled

# service sshd starat

Possible reason 3: Port occupied

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