Authenticated DHCP Sample Clauses

Authenticated DHCP. The DHCP protocol assigns IP addresses to new computing devices when they enter a network and refreshes the IP information at configurable intervals. It is crucial for IP guest access networks such as eduroam to provide the DHCP service, because guests would otherwise need to go through an administrative procedure of manually requesting an IP address for temporary use. The DHCP is used widely in access networks. There are some well-documented weaknesses in the protocol which apply to any access network and are not eduroam specific. In eduroam, DHCP addresses are assigned to client devices after they have authenticated to the eduroam infrastructure, i.e. only after a successful authentication. There is no possibility for a non-community adversary to abuse DHCP. There is a possibility that a properly authenticated user can try to do harm in his surroundings or has malware installed that tries to do so. This section discusses possible extensions to DHCP to deal with such authenticated adversaries who attempt to exploit one of the weaknesses of DHCP. This weakness is described in section 2. A possible extension to DHCP which can eliminate this weakness in IEEE 802.1X networks is described in section 3. Other approaches for problem mitigation are described in section 4. Section 5 provides a conclusion.
View Source

Related to Authenticated DHCP

  • Authentication Date The Notes of this Series shall be dated the date of their authentication.

  • Authentication of Notes If, at the time the successor by merger or consolidation to the Indenture Trustee succeeds to the trusts created by this Indenture, Notes have been authenticated but not delivered, the successor Indenture Trustee may adopt the certificate of authentication of a predecessor Indenture Trustee and deliver the Notes so authenticated. If at that time any Notes have not been authenticated, the successor Indenture Trustee may authenticate the Notes. In each of those cases, the certificates will have the same force and effect provided in the Notes or in this Indenture as the certificate of the predecessor Indenture Trustee.

  • Authentication of Trust Certificates On the Closing Date, the Owner Trustee shall cause the Trust Certificates to be executed on behalf of the Trust, authenticated and delivered to or upon the written order of the Depositor signed by the Depositor’s president, any vice president, secretary, treasurer or any assistant treasurer, without further company action by the Depositor. No Trust Certificate shall entitle a Certificateholder to any benefit under this Agreement or be valid for any purpose unless there shall appear on such Trust Certificate a certificate of authentication substantially in the form set forth in Exhibit A, executed by the Owner Trustee or the Certificate Registrar, as its authenticating agent, by manual signature; such authentication shall constitute conclusive evidence that such Trust Certificate shall have been duly authenticated and delivered hereunder. All Trust Certificates shall be dated the date of their authentication.

  • Certificated Notes Except as provided in Section 2.3 or 2.4, owners of beneficial interests in Restricted Global Notes shall not be entitled to receive physical delivery of certificated Notes. Certificated Notes shall not be exchangeable for beneficial interests in Global Notes, except with the consent of the Company.

  • Temporary Global Notes Notes offered and sold in reliance on Regulation S shall be issued initially in the form of the Regulation S Temporary Global Note, which shall be deposited on behalf of the purchasers of the Notes represented thereby with the Trustee, at its New York office, as custodian for the Depositary, and registered in the name of the Depositary or the nominee of the Depositary for the accounts of designated agents holding on behalf of Euroclear or Cedel Bank, duly executed by the Company and authenticated by the Trustee as hereinafter provided. The Restricted Period shall be terminated upon the receipt by the Trustee of (i) a written certificate from the Depositary, together with copies of certificates from Euroclear and Cedel Bank certifying that they have received certification of non-United States beneficial ownership of 100% of the aggregate principal amount of the Regulation S Temporary Global Note (except to the extent of any beneficial owners thereof who acquired an interest therein during the Restricted Period pursuant to another exemption from registration under the Securities Act and who will take delivery of a beneficial ownership interest in a 144A Global Note or an IAI Global Note bearing a Private Placement Legend, all as contemplated by Section 2.06(a)(ii) hereof), and (ii) an Officers' Certificate from the Company. Following the termination of the Restricted Period, beneficial interests in the Regulation S Temporary Global Note shall be exchanged for beneficial interests in Regulation S Permanent Global Notes pursuant to the Applicable Procedures. Simultaneously with the authentication of Regulation S Permanent Global Notes, the Trustee shall cancel the Regulation S Temporary Global Note. The aggregate principal amount of the Regulation S Temporary Global Note and the Regulation S Permanent Global Notes may from time to time be increased or decreased by adjustments made on the records of the Trustee and the Depositary or its nominee, as the case may be, in connection with transfers of interest as hereinafter provided.