By John Rittinghouse PhD CISM, James F. Ransome PhD CISM CISSP
This entire instant community booklet addresses the operational and daily safeguard administration requisites of twenty first century businesses. instant networks can simply be reconfigured, are very cellular, let for in all likelihood nonstop publicity, and require the extent of safety be scrutinized much more than for stressed networks. This comprises inherent safeguard flaws in a number of instant architectures that lead to extra hazards to differently safe converged stressed out networks. an excellent worse state of affairs is one the place an insecure instant community is hooked up to a weakly secured or insecure stressed out community and the instant subnet isn't separated from the stressed out subnet. There are nearly a dozen well known books that hide parts of the structure, layout, concept, concerns, demanding situations, and instructed guidelines for instant defense, none of which tackle them in a realistic, operationally-oriented and complete manner. instant Operational defense bridges this hole.
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Extra resources for Wireless Operational Security
Sample text
Optional: CA verifies Alices ID through out-of-band means • email/phone callback • Business/credit bureau records, in-house records Obtaining a Certificate (ctd) 3. CA signs the public key and ID with the CA key, creating a certificate • CA has certified the binding between the key and ID 4. Alice verifies the key, ID, and CA’s signature • Ensures the CA didn’t alter the key or ID • Protects the certificate in transit 5. Alice and/or the CA publish the certificate Role of a CA Original intent was to certify that a key really did belong to a given party Role was later expanded to certify all sorts of other things • • • • • Are they a bona fide business?
Key storage • Secure storage of keys Revocation • Revoking published keys • Determining whether a published key is still valid Key Lifetimes and Key Compromise Authentication keys • Public keys may have an extremely long lifetime (decades) • Private keys/conventional keys have shorter lifetimes (a year or two) Confidentiality keys • Should have as short a lifetime as possible If the key is compromised • Revoke the key Effects of compromise • Authentication: Signed documents are rendered invalid unless timestamped • Confidentiality: All data encrypted with it is compromised Key Distribution Alice retains the private key and sends the public key to Bob Mallet intercepts the key and substitutes his own key Mallet can decrypt all traffic and generate fake signed message Key Distribution (ctd) A certification authority (CA) solves this problem CA signs Alice’s key to guarantee its authenticity to Bob • Mallet can’t substitute his key since the CA won’t sign it Certification Authorities A certification authority (CA) guarantees the connection between a key and an end entity An end entity is • • • • • • A person A role (“Director of marketing”) An organisation A pseudonym A piece of hardware or software An account (bank or credit card) Some CA’s only allow a subset of these types Obtaining a Certificate Obtaining a Certificate (ctd) 1.
Users put whatever they felt like into the DN 2. 500 Directory Access Protocol (DAP) adapted for Internet use • Originally Lightweight Directory Access Protocol, now closer to HDAP Provides access to LDAP servers (and hence DSA’s) over a TCP/IP connection • • • • bind and unbind to connect/disconnect read to retrieve data add, modify, delete to update entries search, compare to locate information LDAP (ctd) LDAP provides a complex heirarchical directory containing information categories with sub-categories containing nested object classes containing entries with one or more (usually more) attributes containing actual values Simplicity made complex “It will scale up into the billions.