TL-SL3428_V3_User_Guide - TP-Link

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Supplicant System EAP SwitchEAP Authentication ServerEAPOL-StartEAP-Request/IdentityEAP-Response/IdentityRADIUS-Access-RequestEAP-RequestRADIUS-Access-ChallengeEAP-ResponseRADIUS-Access-RequestEAP-SuccessRADIUS-Access-AcceptFigure 11-18 EAP-MD5 Authentication Procedure1. A supplicant system launches an 802.1X client program via its registered user name andpassword to initiate an access request through the sending of an EAPOL-Start packet to theswitch. The 802.1X client program then forwards the packet to the switch to start theauthentication process.2. Upon receiving the authentication request packet, the switch sends an EAP-Request/Identitypacket to ask the 802.1X client program for the user name.3. The 802.1X client program responds by sending an EAP-Response/Identity packet to theswitch with the user name included. The switch then encapsulates the packet in a RADIUSAccess-Request packet and forwards it to the RADIUS server.4. Upon receiving the user name from the switch, the RADIUS server retrieves the user name,finds the corresponding password by matching the user name in its database, encrypts thepassword using a randomly-generated key, and sends the key to the switch through anRADIUS Access-Challenge packet. The switch then sends the key to the 802.1X clientprogram.5. Upon receiving the key (encapsulated in an EAP-Request/MD5 Challenge packet) from theswitch, the client program encrypts the password of the supplicant system with the key andsends the encrypted password (contained in an EAP-Response/MD5 Challenge packet) tothe RADIUS server through the switch. (The encryption is irreversible.)6. The RADIUS server compares the received encrypted password (contained in a RADIUSAccess-Request packet) with the locally-encrypted password. If the two match, it will thensend feedbacks (through a RADIUS Access-Accept packet and an EAP-Success packet) tothe switch to indicate that the supplicant system is authorized.7. The switch changes the state of the corresponding port to accepted state to allow thesupplicant system access the network. And then the switch will monitor the status ofsupplicant by sending hand-shake packets periodically. By default, the switch will force thesupplicant to log off if it can not get the response from the supplicant for two times.8. The supplicant system can also terminate the authenticated state by sending EAPOL-Logoffpackets to the switch. The switch then changes the port state from accepted to rejected.(2) EAP Terminating Mode159
In this mode, packet transmission is terminated at authenticator systems and the EAP packets aremapped into RADIUS packets. Authentication and accounting are accomplished through RADIUSprotocol.In this mode, PAP or CHAP is employed between the switch and the RADIUS server. This switchsupports the PAP terminating mode. The authentication procedure of PAP is illustrated in thefollowing figure.Supplicant SystemEAPSwitchRADIUSAuthentication ServerEAPOL-StartEAP-Request/IdentityEAP-Response/IdentityEAP-RequestEAP-ResponseRADIUS-Access-RequestEAP-SuccessRADIUS-Access-AcceptFigure 11-19 PAP Authentication ProcedureIn PAP mode, the switch encrypts the password and sends the user name, therandomly-generated key, and the supplicant system-encrypted password to the RADIUS server forfurther authentication. Whereas the randomly-generated key in EAP-MD5 relay mode is generatedby the authentication server, and the switch is responsible to encapsulate the authenticationpacket and forward it to the RADIUS server.‣ 802.1X TimerIn 802.1 x authentication, the following timers are used to ensure that the supplicant system, theswitch, and the RADIUS server interact in an orderly way:(1) Supplicant system timer (Supplicant Timeout): This timer is triggered by the switchafter the switch sends a request packet to a supplicant system. The switch will resend therequest packet to the supplicant system if the supplicant system fails to respond in thespecified timeout period.(2) RADIUS server timer (Server Timeout): This timer is triggered by the switch after theswitch sends an authentication request packet to RADIUS server. The switch will resendthe authentication request packet if the RADIUS server fails to respond in the specifiedtimeout period.(3) Quiet-period timer (Quiet Period): This timer sets the quiet-period. When a supplicantsystem fails to pass the authentication, the switch quiets for the specified period before itprocesses another authentication request re-initiated by the supplicant system.‣ Guest VLANGuest VLAN function enables the supplicants that do not pass the authentication to access thespecific network resource.By default, all the ports connected to the supplicants belong to a VLAN, i.e. Guest VLAN. <strong>User</strong>sbelonging to the Guest VLAN can access the resources of the Guest VLAN without being160
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TL-SL342824-Port 10/100Mbps + 4-Por
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CONTENTSPackage Contents ..........
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7.4.2 TC Protect...................
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12.3.3 Alarm Config ...............
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Chapter 1 About this GuideThis User
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ChapterChapter 9 QoSChapter 10 ACLC
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Chapter 2 IntroductionThanks for ch
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Note:When using the SFP port with a
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Figure 3-3 Main Setup-MenuNote:Clic
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Indicates the 100Mbps port is at th
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Device Location:System Contact:Ente
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IP Address Mode:Management VLAN:IP
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Password:Confirm Password:Type a pa
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Figure 4-11 Firmware UpgradeNote:1.
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Figure 4-14 Access ControlThe follo
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Figure 4-15 SSL ConfigThe following
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‣ Key DownloadKey Type:Key File:D
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3. On the Web management page of th
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Chapter 5 SwitchingSwitching module
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Figure 5-2 Mirroring PortThe follow
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enabled, the outgoing packets sent
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Note:1. The Port Security function
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Figure 5-6 LAG TableThe following e
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Description:Give a description to t
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preferred one. If the two port prio
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automatically.Refresh Rate:Enter a
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Figure 5-12 Address TableThe follow
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Search Option:Select a Search Optio
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Select:MAC Address:VLAN ID:Port:Typ
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Chapter 6 VLANThe traditional Ether
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(2) TRUNK: The TRUNK port can be ad
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Figure 6-4 Create or Modify 802.1Q
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Link Type:PVID:LAG:VLAN:Select the
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6.2.1 Protocol VLANOn this page, yo
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Figure 6-9 Enable Protocol VLAN for
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6.4 Application Example for Protoco
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Hold Timer: When a GARP entity rece
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Fixed: In this mode, a port cannot
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• Port: Port 3 is the root port o
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Tips:In a STP with stable topology,
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Figure 7-3 Port rolesThe Spanning T
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that occur in a specific region bef
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Figure 7-6 Port ConfigThe following
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Figure 7-7 Region ConfigThe followi
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Figure 7-9 Instance Port ConfigThe
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A CIST and its secondary root bridg
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7.4.2 TC ProtectWhen TC Protect is
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• Configure Switch B:Step Operati
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‣ Suggestion for Configuration•
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1. Multicast IP Address:As specifie
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The host, running IGMPv1, does not
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Figure 8-5 Port ConfigThe following
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Select:VLAN ID:Router Port Time:Mem
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5. After a multicast VLAN is create
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8.2.1 Multicast IP TableOn this pag
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8.3 Multicast FilterWhen IGMP Snoop
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Max Groups:LAG:Specify the maximum
Page 115 and 116: Chapter 9 QoSQoS (Quality of Servic
Page 117 and 118: Figure 9-4 SP-Mode2. WRR-Mode: Weig
Page 119 and 120: Note:To complete QoS function confi
Page 121 and 122: Priority Level:Indicates the priori
Page 123 and 124: 3 Map the DSCP priority to theprior
Page 125 and 126: Figure 9-11 Storm ControlThe follow
Page 127 and 128: Port Voice VLANModeAutomatic ModeMa
Page 129 and 130: The following entries are displayed
Page 131 and 132: Chapter 10 ACLACL (Access Control L
Page 133 and 134: End Time:Delete:Displays the end ti
Page 137 and 138: 10.2.5 Extend-IP ACLExtend-IP ACLs
Page 139 and 140: Operation:Click the Edit button to
Page 141 and 142: Index:Policy Name:Interface:Directi
Page 143 and 144: 3. The staff of the marketing depar
Page 145 and 146: Chapter 11 Network SecurityNetwork
Page 147 and 148: Figure 11-2 Manual BindingThe follo
Page 149 and 150: Figure 11-4 ARP ScanningThe followi
Page 151 and 152: Figure 11-6 Interaction between a D
Page 153 and 154: Choose the menu Network Security→
Page 155 and 156: 11.2 ARP InspectionAccording to the
Page 157 and 158: Figure 11-11 ARP Attack - Cheating
Page 159 and 160: The IP-MAC Binding function allows
Page 163 and 164: DoS Attack TypeDescriptionScan SYNF
Page 165: supplicant system. Note that the cl
Page 169 and 170: exchange information between the sw
Page 171 and 172: Authorized:LAG:Displays the authent
Page 173 and 174: Chapter 12 SNMP‣ SNMP OverviewSNM
Page 175 and 176: The User is configured in a SNMP Gr
Page 177 and 178: 12.1.3 SNMP GroupOn this page, you
Page 179 and 180: Figure 12-6 SNMP UserThe following
Page 181 and 182: ead-only: Management right of the C
Page 183 and 184: Figure 12-8 Notification ConfigThe
Page 185 and 186: The RMON Groups can be configured o
Page 187 and 188: Figure 12-11 Alarm ConfigThe follow
Page 189 and 190: Chapter 13 ClusterWith the developm
Page 193 and 194: Detail:Click the Detail button to v
Page 195 and 196: ‣ Device TableDevice Type:Device
Page 197 and 198: Port:NTDP:Displays the port number
Page 199 and 200: Cluster:Cluster Role:Displays the c
Page 201 and 202: Individual:Select this option to ch
Page 203 and 204: 4 Configure the member switch On Cl
Page 205 and 206: Figure 14-1 CPU MonitorClick the Mo
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Page 209 and 210: Figure 14-5 Log HostThe following e
Page 211 and 212: Pair:Status:Length:Error:Displays t
Page 213 and 214: 14.4.2 TracertTracert test function
Page 215 and 216: Figure 15-2 Open Hyper Terminal2) T
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Figure 15-6 bootUtil MenuAs the pro
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Appendix A: SpecificationsIEEE802.3
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Figure B-25) The following TCP/IP P
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Appendix C: 802.1X Client SoftwareI
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Figure C-5 Install the Program6. Th
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Figure C-8 Preparing Setup3. On the
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Auto reconnect after timeout: Selec
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Appendix D: GlossaryAccess Control
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Layer 2Data Link layer in the ISO 7
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