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DES-3550 Fast Ethernet Layer 2 Switch
Port Security
A given port's (or a range of ports') dynamic MAC address learning can be locked such that the current source MAC
addresses entered into the MAC address forwarding table can not be changed once the port lock is enabled. The port can be
locked by using the Admin State pull-down menu to Enabled, and clicking Apply.
Port Security is a security feature that prevents unauthorized computers (with source MAC addresses) unknown to the Switch
prior to locking the port (or ports) from connecting to the Switch's locked ports and gaining access to the network.
Figure 6- 41. Port Security Settings window
68
- D-Link ™ DES-3550 1
- Table of Contents 3
- Preface 9
- Intended Readers 10
- Notes, Notices, and Cautions 10
- Safety Instructions 11
- Introduction 15
- Switching Technology 16
- Switch Description 16
- Features 17
- Front-Panel Components 18
- LED Indicators 19
- Rear Panel Description 20
- Side Panel Description 20
- Gigabit Combo Ports 21
- Installation 22
- Power On 24
- Power Failure 24
- Connecting The Switch 25
- Switch to Hub or Switch 26
- Section 4 27
- Password Protection 31
- SNMP Settings 32
- IP Address Assignment 33
- Web-based User Interface 37
- Web Pages 38
- Configuring The Switch 39
- Switch Information 40
- IP Address 41
- Advanced Settings 43
- Port Configurations 45
- Port Description 46
- Port Mirroring 47
- Link Aggregation 48
- LACP Port Setting 51
- MAC Notification 52
- IGMP Snooping 53
- Static Router Ports 55
- Spanning Tree 56
- 802.1w Rapid Spanning Tree 57
- Port Transition States 57
- Edge Port 57
- P2P Port 57
- STP Bridge Global Settings 58
- MST Configuration Table 61
- MSTI Settings 65
- STP Instance Settings 66
- MSTP Port Information 67
- Forwarding Filtering 69
- Multicast Port Filtering 71
- VLAN Description 72
- IEEE 802.1Q VLANs 73
- 802.1Q VLAN Tags 74
- Port VLAN ID 75
- Tagging and Untagging 75
- Ingress Filtering 76
- Default VLANs 76
- Static VLAN Entry 77
- GVRP Setting 80
- Traffic Control 81
- Port Security 82
- Advantages of QoS 84
- Understanding QoS 85
- Port Bandwidth 86
- Scheduling 87
- 802.1p Default Priority 88
- 802.1p User Priority 88
- Traffic Segmentation 89
- System Severity Alerts 90
- System Log Server 91
- SNTP Settings 93
- Time Zone and DST 94
- Minutes 95
- 30, 60, 90, or 120 minutes 95
- Mean Time (GMT.) 95
- Access Profile Table 96
- PAE Access Entity (802.1X) 110
- Authenticator 111
- Authentication Process 112
- Ethernet Switch 113
- Configure Authenticator 115
- PAE System Control 117
- RADIUS Server 121
- Layer 3 IP Networking 122
- IP-MAC Binding 123
- IP-MAC Binding Table 124
- IP-MAC Binding Blocked 125
- DHCP/BOOTP Relay 127
- Management 131
- Admin and User Privileges 132
- Policy & Parameters 134
- Authentication Server Hosts 137
- Login Method Lists 139
- Enable Method Lists 140
- Local Enable Password 142
- Enable Admin 143
- Secure Socket Layer (SSL) 144
- Download Certificate 145
- Ciphersuite 145
- Secure Shell (SSH) 147
- SSH Algorithm 148
- SSH User Authentication 150
- SNMP Manager 152
- SNMP User Table 153
- SNMP View Table 155
- SNMP Group Table 157
- SNMP Host Table 160
- SNMP Engine ID 161
- Monitoring 162
- Port Utilization 163
- CPU Utilization 164
- Packets 165
- UMB Cast (RX) 167
- Transmitted (TX) 169
- Received (RX) 171
- MAC Address 177
- Switch History 179
- IGMP Snooping Group 180
- IGMP Snooping Forwarding 181
- VLAN Status 182
- Router Port 183
- Port Access Control 184
- Layer 3 Feature 186
- Maintenance 187
- Download Configuration File 188
- Ping Test 189
- Save Changes 190
- Reset System 191
- Reset Config 191
- Reboot Device 191
- D-Link Single IP Management 192
- SIM Using The Web Interface 193
- Topology 194
- Tool Tips 198
- Right-Click 199
- Commander Switch Icon 200
- Member Switch Icon 201
- Candidate Switch Icon 202
- Menu Bar 203
- Firmware Upgrade 205
- Appendix A 206
- General 207
- Performance 208
- Appendix B 209
- Appendix C 210
- Glossary 211
- LIMITED WARRANTY 214
- FCC Warning 215
- Product Registration 218
- General Terms 219
- Technical Support 233
- Техническая поддержка 240
- Asistencia Técnica 241
- Suporte Técnico 242
- Technische Unterstützung 246
- Assistance technique 247
- Supporto tecnico 249
- Pomoc techniczna 251
- Technická podpora 252
- Technikai Támogatás 253
- Teknisk Support 254
- Registration Card 259
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