发明名称 |
System, method and program to control access to virtual LAN via a switch |
摘要 |
System method and program for controlling access to a VLAN via a port of a VLAN switch system. In response to receipt of a message packet at the port, the switch system determines if a MAC address of the packet matches a MAC address for which the port has been programmed to recognize as a MAC address of a device authorized to communicate with the port. The MAC address of the packet does not match a MAC address for which the port has been programmed to recognize as a MAC address of a device authorized to communicate with the port. In response, the switch system blocks the packet if a rate of ill-formed packets and/or packets from an unrecognized MAC address exceeds a threshold pass rate. The threshold pass rate can be adjusted based on the rate of change of receipt of ill-formed packets and/or packets from an unrecognized MAC address.
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申请公布号 |
US7936670(B2) |
申请公布日期 |
2011.05.03 |
申请号 |
US20070733904 |
申请日期 |
2007.04.11 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
CAZARES JOHN PAUL;CLIFFORD JADE W.;LINGAFELT CHARLES STEVEN;SISK ROBERT BARRY |
分类号 |
G06F21/20 |
主分类号 |
G06F21/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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