「StartSSL」とは異なります。
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TCP/IP群
アプリケーション層
BGP
DHCP
DNS
FTP
HTTP
IMAP
IRC
LDAP
MGCP
MQTT
NNTP
NTP
SNTP
TIME
POP
RIP
OSPF
ONC RPC
RTP
SIP
SMTP
SNMP
SSH
Telnet
TFTP
TLS/SSL
XMPP
カテゴリ
トランスポート層
TCP
UDP
DCCP
SCTP
RSVP
QUIC
カテゴリ
インターネット層
IP
IPv4
IPv6
ICMP
ICMPv6
NDP
IGMP
IPsec
カテゴリ
リンク層
ARP
SPB
トンネリング
L2TP
PPP
MAC
イーサネット
IEEE 802.11
DSL
ISDN
カテゴリ
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表
話
編
STARTTLS(スタート・ティーエルエス)は、平文の通信プロトコルを暗号化通信に拡張する方法のひとつ。 暗黙のTLS(またはSSL。以下単にTLS)では、暗号化通信のために専用のポートを割り当てなければならない。STARTTLSを利用すれば、専用のポート番号を割り当てずに、途中から平文の通信を暗号化通信に切り替えることができる。 TLSはアプリケーション中立である。例えば、TLS 1.2の仕様書である .mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation.cs-ja1 q,.mw-parser-output .citation.cs-ja2 q{quotes:"「""」""『""』"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free a,.mw-parser-output .citation .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited a,.mw-parser-output .id-lock-registration a,.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription a,.mw-parser-output .citation .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:#d33}.mw-parser-output .cs1-visible-error{color:#d33}.mw-parser-output .cs1-maint{display:none;color:#3a3;margin-left:0.3em}.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}RFC 5246
特徴
プロトコルのSTARTTLS対応を規定するRFC