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DES-3028 DES-3028P DES-3028G DES-3052 DES-3052P Layer 2 Fast Ethernet Managed Switch DHCP Snooping Entries This table is used to view dynamic entries on specific ports. To view particular port settings, enter the port number and click Find. To view all entries click View All, and to delete an entry, click Clear. To view this window click, Security > IP-MAC-Port Binding > DHCP Snooping Entries MAC Block List Figure 10- 7. DHCP Snooping Entries window This table is used to view unauthorized devices that have been blocked by IP-MAC binding restrictions. To find an unauthorized device that has been blocked by the IP-MAC binding restrictions, enter the VLAN Name and MAC Address in the appropriate fields and click Find. To delete an entry, click the delete button next to the entry’s port. To delete all the entries in the MAC Block List window, click Clear All. To view this window click, Security > IP-MAC-Port Binding > MAC Block List Figure 10- 8. MAC Blocked List window 190
SSL DES-3028 DES-3028P DES-3028G DES-3052 DES-3052P Layer 2 Fast Ethernet Managed Switch Secure Sockets Layer or SSL is a security feature that will provide a secure communication path between a host and client through the use of authentication, digital signatures and encryption. These security functions are implemented through the use of a ciphersuite, which is a security string that determines the exact cryptographic parameters, specific encryption algorithms and key sizes to be used for an authentication session and consists of three levels: 1. Key Exchange: The first part of the ciphersuite string specifies the public key algorithm to be used. This switch utilizes the Rivest Shamir Adleman (RSA) public key algorithm and the Digital Signature Algorithm (DSA), specified here as the DHE DSS Diffie-Hellman (DHE) public key algorithm. This is the first authentication process between client and host as they “exchange keys” in looking for a match and therefore authentication to be accepted to negotiate encryptions on the following level. 2. Encryption: The second part of the ciphersuite that includes the encryption used for encrypting the messages sent between client and host. The Switch supports two types of cryptology algorithms: Stream Ciphers – There are two types of stream ciphers on the Switch, RC4 with 40-bit keys and RC4 with 128bit keys. These keys are used to encrypt messages and need to be consistent between client and host for optimal use. CBC Block Ciphers – CBC refers to Cipher Block Chaining, which means that a portion of the previously encrypted block of encrypted text is used in the encryption of the current block. The Switch supports the 3DES EDE encryption code defined by the Data Encryption Standard (DES) to create the encrypted text. 3. Hash Algorithm: This part of the ciphersuite allows the user to choose a message digest function which will determine a Message Authentication Code. This Message Authentication Code will be encrypted with a sent message to provide integrity and prevent against replay attacks. The Switch supports two hash algorithms, MD5 (Message Digest 5) and SHA (Secure Hash Algorithm). These three parameters are uniquely assembled in four choices on the Switch to create a three-layered encryption code for secure communication between the server and the host. The user may implement any one or combination of the ciphersuites available, yet different ciphersuites will affect the security level and the performance of the secured connection. The information included in the ciphersuites is not included with the Switch and requires downloading from a third source in a file form called a certificate. This function of the Switch cannot be executed without the presence and implementation of the certificate file and can be downloaded to the Switch by utilizing a TFTP server. The Switch supports SSLv3 and TLSv1. Other versions of SSL may not be compatible with this Switch and may cause problems upon authentication and transfer of messages from client to host. <strong>Download</strong> Certificate This window is used to download a certificate file for the SSL function on the Switch from a TFTP server. The certificate file is a data record used for authenticating devices on the network. It contains information on the owner, keys for authentication and digital signatures. Both the server and the client must have consistent certificate files for optimal use of the SSL function. The Switch only supports certificate files with .der file extensions. The Switch is shipped with a certificate pre-loaded though the user may need to download more, depending on user circumstances. Ciphersuite This window will allow the user to enable SSL on the Switch and implement any one or combination of listed ciphersuites on the Switch. A ciphersuite is a security string that determines the exact cryptographic parameters, specific encryption algorithms and key sizes to be used for an authentication session. The Switch possesses four possible ciphersuites for the SSL function, which are all enabled by default. To utilize a particular ciphersuite, disable the unwanted ciphersuites, leaving the desired one for authentication. When the SSL function has been enabled, the web will become disabled. To manage the Switch through the web based management while utilizing the SSL function, the web browser must support SSL encryption and the header of the URL must begin with https://. (Ex. https://10.90.90.90) Any other method will result in an error and no access can be authorized for the webbased management. To view the windows for <strong>Download</strong> Certificate and Ciphersuite, click Security > SSL: 191
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User Manual Product Model : DES-302
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DES-3028 DES-3028P DES-3028G DES-30
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Preface DES-3028 DES-3028P DES-3028
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RFC1493 Bridge RFC2819 RMON DES-30
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LED Indicators DES-3028 DES-3028P D
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Installation DES-3028 DES-3028P DES
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Port Description DES-3028 DES-3028P
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Test Results DES-3028 DES-3028P DES
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Log Settings DES-3028 DES-3028P DES
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PoE System DES-3028 DES-3028P DES-3
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The Upgrade to v1.6 DES-3028 DES-30
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Topology DES-3028 DES-3028P DES-302
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Tool Tips DES-3028 DES-3028P DES-30
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Help DES-3028 DES-3028P DES-3028G D
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L2 Features VLANs DES-3028 DES-3028
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Asymmetric VLANs DES-3028 DES-3028P
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Page 207 and 208: RSA with RC4 128 MD5 RSA with 3DES
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Packet Errors DES-3028 DES-3028P DE
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Packet Size DES-3028 DES-3028P DES-
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MAC Address DES-3028 DES-3028P DES-
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Switch Log DES-3028 DES-3028P DES-3
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Logout DES-3028 DES-3028P DES-3028G
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Internal Power Supply DES-3028 DES-
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LED indicators DES-3028 DES-3028P D
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LAN - Local Area Network: A network
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When the switch receives the frame,
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How ARP spoofing attacks a network
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Prevent ARP spoofing via packet con
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Fiber Optic Ports - Optical Safety
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Disclaimer of Other Warranties: EXC
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pertaining to the product. While ne
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LIMITED WARRANTY D-Link provides th
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Operational adjustments covered in
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Tech Support Technical Support You
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Assistance technique Assistance tec
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Teknistä tukea asiakkaille Suomess
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Technical Support You can find soft
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Техническая поддер
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Suporte Técnico Você pode encontr
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Technical Support この度は弊
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