What is RFC 6455: The WebSocket Protocol WebSocket is a communication protocol providing full-duplex, bidirectional communication channels over a single, long-lived TCP connection. It enables real-time data exchange between a client (e.g., web browser) and a server. ...
上图,是RFC1945也就是HTTP/1.0的Additional Features部分,这部分增加了一些请求方法和头字段规定,注意我之前说过,HTTP/1.0还算不上是标准,只是个备忘录,但是在这个备忘录的最后,已经确定了一部分未来的标准的内容。 我们再来看张图: 这是RFC2616也就是HTTP/1.1标准的头字段的部分定义,是不是有些字段看上去很熟悉。
The SMTP port 25 was first introduced in 1982 inRFC 821as the default for SMTP. In a nutshell,port 25 was intended for relaying messages between email servers. Despite that, many people use it for SMTP submission from email clients to mail servers. Unfortunately, port 25 is used for aggres...
The Open Shortest Path First (OSPF) protocol is a link-state Interior Gateway Protocol (IGP) developed by the Internet Engineering Task Force (IETF). Currently, OSPF Version 2 defined in RFC 2328 is intended for IPv4, and OSPF Version 3 defined in RFC 2740 is intended for IPv6. Unless ot...
INTERNET is .1 MGMNT is .2 MIB-2 is .1 SYSTEM is .1 sysDescr is .1 SNMP Versions SNMP has three versions: SNMPv1, SNMPv2c, and SNMPv3. SNMPv1 SNMPv1 is the first version of the protocol. It is easy to set up and is defined in RFC 1155 and 1157. ...
Internet Protocol Version 6 (IPv6) IPv6 is the newest version of the internet protocols, and should overcome the central issues of its predecessors. Included in these issues is the impending shortage of IPv4 addresses as well as the violation of the end-to-end principle by the strict separati...
2011, the Internet Engineering Task Force (IETF) standardized the WebSocket protocol throughRFC 6455. In coordination with IETF, the Internet Assigned Numbers Authority (IANA) maintains theWebSocket Protocol Registries, which define many of the codes and parameter identifiers used by the protocol. ...
Additionally, HSTS is ineffective against typosquatting domains, DNS-based attacks and man-in-the-middle attacks that serve traffic from an artificial domain that is not on the HSTS Preload list. And as HSTS relies on TLS itself, it also relies on the security of TLS. Read RFC 6797 for ...
Section 6.7 of RFC 7489 states: An operator that wishes to favor DMARC policy over SPF policy, for example, will disregard the SPF policy, since enacting an SPF-determined rejection prevents evaluation of DKIM; DKIM might otherwise pass, satisfying the DMARC evaluation. There is a trade-off...
DMARC is an essential email authentication protocol that aids in protecting domains against phishing and spoofing. The three DMARC policy options include None, Quarantine, and Reject, each providing varying levels of enforcement. Implementing DMARC can significantly reduce the risks of phishing attacks, ...