Perl validating file names

13-Oct-2015 20:06 by 3 Comments

Perl validating file names

DNSSEC does not provide confidentiality of data; in particular, all DNSSEC responses are authenticated but not encrypted.

While protecting IP addresses is the immediate concern for many users, DNSSEC can protect any data published in the DNS, including text records (TXT), mail exchange records (MX), and can be used to bootstrap other security systems that publish references to cryptographic certificates stored in the DNS such as Certificate Records (CERT records, RFC 4398), SSH fingerprints (SSHFP, RFC 4255), IPSec public keys (IPSECKEY, RFC 4025), and TLS Trust Anchors (TLSA, RFC 6698).The original design of the Domain Name System (DNS) did not include security; instead, it was designed to be a scalable distributed system.The Domain Name System Security Extensions (DNSSEC) attempts to add security, while maintaining backward compatibility.All answers from DNSSEC protected zones are digitally signed.By checking the digital signature, a DNS resolver is able to check if the information is identical (i.e.Contains links to the next record name in the zone (in hashed name sorting order) and lists the record types that exist for the name covered by the hash value in the first label of the NSEC3 -record's own name.

These records can be used by resolvers to verify the non-existence of a record name and type as part of DNSSEC validation.

NSEC and NSEC3 records are used for robust resistance against spoofing.

DNSSEC was designed to be extensible so that as attacks are discovered against existing algorithms, new ones can be introduced in a backward-compatible fashion.

Domain owners generate their own keys, and upload them using their DNS control panel at their domain-name registrar, which in turn pushes the keys via sec DNS to the zone operator (e.g., Verisign for .com) who signs and publishes them in DNS.

DNS is implemented by the use of several resource records.

DNSSEC cannot protect against false assumptions; it can only authenticate that the data is truly from or not available from the domain owner.

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