HTTP Working GroupE. Stark
Internet-DraftGoogle
Intended status: ExperimentalFebruary 8, 2017
Expires: August 12, 2017

free dating sites in thailand Expect-CT Extension for HTTP

draft-ietf-httpbis-expect-ct-00

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free dating sites in the uk This document defines a new HTTP header, named Expect-CT, that allows web host operators to instruct user agents to expect valid Signed Certificate Timestamps (SCTs) to be served on connections to these hosts. When configured in enforcement mode, user agents (UAs) will remember that hosts expect SCTs and will refuse connections that do not conform to the UA’s Certificate Transparency policy. When configured in report-only mode, UAs will report the lack of valid SCTs to a URI configured by the host, but will allow the connection. By turning on Expect-CT, web host operators can discover misconfigurations in their Certificate Transparency deployments and ensure that misissued certificates accepted by UAs are discoverable in Certificate Transparency logs.deutsche männer suchen ukrainische frauen

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frauen suchen männer in dresden This document defines a new HTTP header that enables UAs to identify web hosts that expect the presence of Signed Certificate Timestamps (SCTs) [RFC6962] in future Transport Layer Security (TLS) [RFC5246] connections.welche männer suchen starke frauen

frauen suchen dicke männer Web hosts that serve the Expect-CT HTTP header are noted by the UA as Known Expect-CT Hosts. The UA evaluates each connection to a Known Expect-CT Host for compliance with the UA’s Certificate Transparency (CT) Policy. If the connection violates the CT Policy, the UA sends a report to a URI configured by the Expect-CT Host and/or fails the connection, depending on the configuration that the Expect-CT Host has chosen.reiche männer suchen frau schweiz

frauen suchen männer in der schweiz If misconfigured, Expect-CT can cause unwanted connection failures (for example, if a host deploys Expect-CT but then switches to a legitimate certificate that is not logged in Certificate Transparency logs, or if a web host operator believes their certificate to conform to all UAs’ CT policies but is mistaken). Web host operators are advised to deploy Expect-CT with caution, by using the reporting feature and gradually increasing the interval where the UA remembers the host as a Known Expect-CT Host. These precautions can help web host operators gain confidence that their Expect-CT deployment is not causing unwanted connection failures.schwache männer suchen starke frauen

polnische frauen suchen deutsche männer Expect-CT is a trust-on-first-use (TOFU) mechanism. The first time a UA connects to a host, it lacks the information necessary to require SCTs for the connection. Thus, the UA will not be able to detect and thwart an attack on the UA’s first connection to the host. Still, Expect-CT provides value by 1) allowing UAs to detect the use of unlogged certificates after the initial communication, and 2) allowing web hosts to be confident that UAs are only trusting publicly-auditable certificates.partnersuche im internet vorteile nachteile ytong

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frauen suchen deutsche männer The key words “MUST”, “MUST NOT”, “REQUIRED”, “SHALL”, “SHALL NOT”, “SHOULD”, “SHOULD NOT”, “RECOMMENDED”, “NOT RECOMMENDED”, “MAY”, and “OPTIONAL” in this document are to be interpreted as described in RFC 2119 [RFC2119].partnersuche ravensburg umgebung freizeit

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ausländische frauen suchen deutsche männer Terminology is defined in this section.app um singles in der nähe zu finden

Certificate Transparency Policy
is a policy defined by the UA concerning the number, sources, and delivery mechanisms of Signed Certificate Timestamps that are served on TLS connections. The policy defines the properties of a connection that must be met in order for the UA to consider it CT-qualified.
Certificate Transparency Qualified
describes a TLS connection for which the UA has determined that a sufficient quantity and quality of Signed Certificate Timestamps have been provided.
CT-qualified
See Certificate Transparency Qualified.
CT Policy
See Certificate Transparency Policy.
Expect-CT Host
See HTTP Expect-CT Host.
HTTP Expect-CT
is the overall name for the combined UA- and server-side security policy defined by this specification.
HTTP Expect-CT Host
is a conformant host implementing the HTTP server aspects of HTTP Expect-CT. This means that an Expect-CT Host returns the “Expect-CT” HTTP response header field in its HTTP response messages sent over secure transport.
Known Expect-CT Host
is an Expect-CT Host that the UA has noted as such. See gratis chat ohne anmeldung und registrierung for particulars.
UA
is an acronym for “user agent”. For the purposes of this specification, a UA is an HTTP client application typically actively manipulated by a user [RFC2616].
Unknown Expect-CT Host
is an Expect-CT Host that the UA has not noted.

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einsame frauen suchen männer The “Expect-CT” header field is a new response header defined in this specification. It is used by a server to indicate that UAs should evaluate connections to the host emitting the header for CT compliance (singles 50 kostenlos testen).online chat rooms ontario canada

partnersuche luzern region partnerbörse 40 plus nebenwirkungen describes the syntax (Augmented Backus-Naur Form) of the header field, using the grammar defined in RFC 5234 [RFC5234] and the rules defined in Section 3.2 of RFC 7230 [RFC7230].partnerbörse 40 plus netzwerk

Expect-CT-Directives = directive *( OWS ";" OWS directive )
directive            = directive-name [ "=" directive-value ]
directive-name       = token
directive-value      = token / quoted-string

tschechische frauen suchen männer Figure 1: Syntax of the Expect-CT header field

türkische frauen suchen männer Optional white space (free dating sites in calgary OWS) is used as defined in Section 3.2.3 of RFC 7230 [RFC7230]. free dating sites in cape town token and free dating sites in china quoted-string are used as defined in Section 3.2.6 of RFC 7230 [RFC7230].verheiratete männer suchen frauen

thai frauen suchen männer The directives defined in this specification are described below. The overall requirements for directives are:frauen suchen männer in vorarlberg

  1. The order of appearance of directives is not significant.
  2. A given directive MUST NOT appear more than once in a given header field. Directives are either optional or required, as stipulated in their definitions.
  3. Directive names are case insensitive.
  4. UAs MUST ignore any header fields containing directives, or other header field value data, that do not conform to the syntax defined in this specification. In particular, UAs must not attempt to fix malformed header fields.
  5. If a header field contains any directive(s) the UA does not recognize, the UA MUST ignore those directives.
  6. If the Expect-CT header field otherwise satisfies the above requirements (1 through 5), the UA MUST process the directives it recognizes.

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deutsche frauen suchen tunesische männer The OPTIONAL free dating sites in california report-uri directive indicates the URI to which the UA SHOULD report Expect-CT failures (frauen suchen männer bremen). The UA POSTs the reports to the given URI as described in wonach suchen männer bei frauen.frauen suchen männer bern

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report-uri-value = absolute-URI

frauen suchen männer in wien Figure 2: Syntax of the report-uri directive value

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frauen suchen männer in münchen Hosts may set free dating sites in denmark report-uris that use HTTP or HTTPS. If the scheme in the free dating sites disabled report-uri is one that uses TLS (e.g., HTTPS), UAs MUST check Expect-CT compliance when the host in the free dating site in delhi report-uri is a Known Expect-CT Host; similarly, UAs MUST apply HSTS if the host in the free dating sites in dubai report-uri is a Known HSTS Host.frauen suchen männer bochum

frauen suchen männer in stuttgart Note that the report-uri need not necessarily be in the same Internet domain or web origin as the host being reported about.gratis singlebörse deutschland meer

frauen suchen männer in hamburg UAs SHOULD make their best effort to report Expect-CT failures to the singles in meiner nähe report-uri, but they may fail to report in exceptional conditions. For example, if connecting the singles in meiner nähe ohne anmeldung report-uri itself incurs an Expect-CT failure or other certificate validation failure, the UA MUST cancel the connection. Similarly, if Expect-CT Host A sets a partnersuche linz land jugendwohlfahrt report-uri referring to Expect-CT Host B, and if B sets a partnersuche linz land jobs report-uri referring to A, and if both hosts fail to comply to the UA’s CT Policy, the UA SHOULD detect and break the loop by failing to send reports to and about those hosts.free chat rooms in pakistan islamabad

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free dating sites in uk The OPTIONAL singles in deiner nähe finden enforce directive is a valueless directive that, if present (i.e., it is “asserted”), signals to the UA that compliance to the CT Policy should be enforced (rather than report-only) and that the UA should refuse future connections that violate its CT Policy. When both the free dating sites in zim enforce directive and free dating sites in zambia report-uri directive (as defined in partnervermittlung odessa nachrichten) are present, the configuration is referred to as an “enforce-and-report” configuration, signalling to the UA both that compliance to the CT Policy should be enforced and that violations should be reported.partnervermittlung odessa oktober

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max-age-value = delta-seconds
delta-seconds = 1*DIGIT

free dating site in uruguay Figure 3: Syntax of the max-age directive value

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single.de komplett kostenlos This section describes the processing model that Expect-CT Hosts implement. The model has 2 parts: (1) the processing rules for HTTP request messages received over a secure transport (e.g., authenticated, non-anonymous TLS); and (2) the processing rules for HTTP request messages received over non-secure transports, such as TCP.jobs partnervermittlung berlin

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partnersuche am bodensee sehenswürdigkeiten When replying to an HTTP request that was conveyed over a secure transport, an Expect-CT Host SHOULD include in its response exactly one Expect-CT header field. The header field MUST satisfy the grammar specified in männer suchen frauen nach mutter aus.deutsche männer suchen ausländische frauen

frauen suchen verheiratete männer Establishing a given host as an Expect-CT Host, in the context of a given UA, is accomplished as follows:junge männer suchen alte frauen

  1. Over the HTTP protocol running over secure transport, by correctly returning (per this specification) at least one valid Expect-CT header field to the UA.
  2. Through other mechanisms, such as a client-side preloaded Expect-CT Host list.

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free dating sites in malaysia Expect-CT Hosts SHOULD NOT include the Expect-CT header field in HTTP responses conveyed over non-secure transport. UAs MUST ignore any Expect-CT header received in an HTTP response conveyed over non-secure transport.partnersuche bei frauen

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free dating sites in mexico The UA processing model relies on parsing domain names. Note that internationalized domain names SHALL be canonicalized according to the scheme in Section 10 of [RFC6797].online chat nach date fragen

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free dating sites in manila If the UA receives, over a secure transport, an HTTP response that includes an Expect-CT header field conforming to the grammar specified in partnersuche frauen indonesien, the UA MUST evaluate the connection on which the header was received for compliance with the UA’s CT Policy, and then process the Expect-CT header field as follows.intelligente frauen partnersuche

free dating sites in michigan If the connection complies with the UA’s CT Policy (i.e. the connection is CT-qualified), then the UA MUST either:indien frauen partnersuche

  • Note the host as a Known Expect-CT Host if it is not already so noted (see singles in meiner nähe kostenlos), or
  • Update the UA’s cached information for the Known Expect-CT Host if the free dating websites in zimbabwe enforce, free dating sites in zurich max-age, or free dating site in zimbabwe report-uri header field value directives convey information different from that already maintained by the UA. If the free dating sites za max-age directive has a value of 0, the UA MUST remove its cached Expect-CT information if the host was previously noted as a Known Expect-CT Host, and MUST NOT note this host as a Known Expect-CT Host if it is not already noted.

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free dating sites in minneapolis If a UA receives more than one Expect-CT header field in an HTTP response message over secure transport, then the UA MUST process only the first Expect-CT header field.free dating sites in arab

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gratis singlebörse deutschland kostenlos The “effective Expect-CT date” of a Known Expect-CT Host is the time that the UA observed a valid Expect-CT header for the host. The “effective expiration date” of a Known Expect-CT Host is the effective Expect-CT date plus the max-age. An Expect-CT Host is “expired” if the effective expiration date refers to a date in the past. The UA MUST ignore any expired Expect-CT Hosts in its cache.partnersuche dunkelhäutige frauen

partnervermittlung salzburg stadt Known Expect-CT Hosts are identified only by domain names, and never IP addresses. If the substring matching the host production from the Request-URI (of the message to which the host responded) syntactically matches the IP-literal or IPv4address productions from Section 3.2.2 of [RFC3986], then the UA MUST NOT note this host as a Known Expect-CT Host.partnersuche frauen deutschland

seriöse partnervermittlung salzburg Otherwise, if the substring does not congruently match an existing Known Expect-CT Host’s domain name, per the matching procedure specified in Section 8.2 of [RFC6797], then the UA MUST add this host to the Known Expect-CT Host cache. The UA caches:partnersuche ulm kostenlos parken

  • the Expect-CT Host’s domain name,
  • whether the free dating sites geeks enforce directive is present
  • the effective expiration date, or enough information to calculate it (the effective Expect-CT date and the value of the free dating sites in ghana max-age directive),
  • the value of the free dating sites in gujarat report-uri directive, if present.

free dating site in venezuela If any other metadata from optional or future Expect-CT header directives are present in the Expect-CT header, and the UA understands them, the UA MAY note them as well.beste gratis singlebörse deutschland

free dating sites in victoria UAs MAY set an upper limit on the value of max-age, so that UAs that have noted erroneous Expect-CT hosts (whether by accident or due to attack) have some chance of recovering over time. If the server sets a max-age greater than the UA’s upper limit, the UA MAY behave as if the server set the max-age to the UA’s upper limit. For example, if the UA caps max-age at 5,184,000 seconds (60 days), and a Pinned Host sets a max- age directive of 90 days in its Expect-CT header, the UA MAY behave as if the max-age were effectively 60 days. (One way to achieve this behavior is for the UA to simply store a value of 60 days instead of the 90-day value provided by the Expect-CT host.)partnersuche ulm kostenlos bus

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free dating sites in vietnam Upon receipt of the Expect-CT response header field, the UA notes the host as a Known Expect-CT Host, storing the host’s domain name and its associated Expect-CT directives in non-volatile storage. The domain name and associated Expect-CT directives are collectively known as “Expect-CT metadata”.singles in ihrer nähe

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free dating sites video If the connection has no errors, then the UA will apply an additional correctness check: compliance with a CT Policy. A UA should evaluate compliance with its CT Policy whenever connecting to a Known Expect-CT Host, as soon as possible. It is acceptable to skip this CT compliance check for some hosts according to local policy. For example, a UA may disable CT compliance checks for hosts whose validated certificate chain terminates at a user-defined trust anchor, rather than a trust anchor built-in to the UA (or underlying platform).frauen suchen männer in lübeck

partnersuche 40 plus aktualisieren If a connection to a Known CT Host violates the UA’s CT policy (i.e. the connection is not CT-qualified), and if the Known Expect-CT Host’s Expect-CT metadata indicates an partnersuche 40 plus opinie enforce configuration, the UA MUST treat the CT compliance failure as a non-recoverable error.frauen suchen männer leipzig

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partnersuche linz land bürgerservice To generate a violation report object, the UA constructs a JSON message of the following form:tunesische männer suchen deutsche frauen

{
  "date-time": date-time,
  "hostname": hostname,
  "port": port,
  "effective-expiration-date": expiration-date,
  "served-certificate-chain": [ (MUST be in the order served)
    pem1, ... pemN
  ],
  "validated-certificate-chain": [
    pem1, ... pemN
  ],
  "scts": [
    sct1, ... sctN
  ]
}

partnersuche raum bodensee Figure 4: JSON format of a violation report object

singlebörse in kärnten Whitespace outside of quoted strings is not significant. The key/value pairs may appear in any order, but each MUST appear only once.partnersuche thailändische frauen

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free dating sites in world The partnersuche frauen australien effective-expiration-date is the Effective Expiration Date for the Expect-CT Host that failed the CT compliance check. It is provided as a string formatted according to Section 5.6, “Internet Date/Time Format”, of [RFC3339].free dating sites in brisbane

free dating sites in wisconsin The partnervermittlung odessa ukraine served-certificate-chain is the certificate chain, as served by the Expect-CT Host during TLS session setup. It is provided as an array of strings, which MUST appear in the order that the certificates were served; each string partnersuche 40 plus nebenwirkungen pem1, … partnersuche 40 plus netzwerk pemN is the Privacy-Enhanced Mail (PEM) representation of each X.509 certificate as described in [RFC7468].free dating sites in bulgaria

single de kostenlos online The single.de gratis gutschein validated-certificate-chain is the certificate chain, as constructed by the UA during certificate chain verification. (This may differ from the partnersuche am bodensee camping served-certificate-chain.) It is provided as an array of strings, which MUST appear in the order matching the chain that the UA validated; each string fresh.single.de kostenlos pem1, … single.de by freenet kostenlos pemN is the Privacy-Enhanced Mail (PEM) representation of each X.509 certificate as described in [RFC7468].free dating site in brussels

singlebörse kärnten zamg The single de frauen kostenlos scts are JSON messages representing the SCTs (if any) that the UA received for the Expect-CT host and their validation statuses. The format of ältere frauen partnersuche sct1, … erfolgreiche frauen partnersuche sctN is shown in free dating sites in bermuda. The SCTs may appear in any order.free dating sites in boston

{
  "sct": sct,
  "status": status,
  "source": source
}

frauen suchen männer mannheim Figure 5: JSON format of an SCT object

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männer suchen frauen wie mutter The polnische frauen partnersuche status is a string that the UA MUST set to one of the following values: “unknown” (indicating that the UA does not have or does not trust the public key of the log from which the SCT was issued), “valid” (indicating that the UA successfully validated the SCT as described in Section 5.2 of [RFC6962]), or “invalid” (indicating that the SCT validation failed because of, e.g., a bad signature).free dating sites in berlin

schlanke männer suchen mollige frauen The große frauen partnersuche source is a string that indicates from where the UA obtained the SCT, as defined in Section 3.3 of [RFC6962]. The UA MUST set partnersuche am bodensee meersburg source to one of the following values: “tls-extension”, “ocsp”, or “embedded”.partnersuche linz land gewerbe

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partnersuche bei quoka When an Expect-CT header field contains the partnersuche am bodensee jugendherberge report-uri directive, and the connection does not comply with the UA’s CT Policy, or when the UA connects to a Known Expect-CT Host with Expect-CT metadata that contains a online partnersuche österreich jobs report-uri, the UA SHOULD report the failure as follows:frauen suchen erfahrene männer

  1. Prepare a JSON object frauen suchen männer nrw report object with the single key norwegische männer suchen deutsche frauen expect-ct-report, whose value is the result of generating a violation report object as described in englische männer suchen deutsche frauen.
  2. Let wo suchen frauen nach männer report body by the JSON stringification of frauen suchen männer nürnberg report object.
  3. Let frauen suchen männer in niederösterreich report-uri be the value of the chat de videntes gratis en linea report-uri directive in the Expect-CT header field.
  4. erfolgreiche männer suchen frauen to männer suchen eine frau wie ihre mutter single de kostenlos nachrichten schreiben report-uri, with the synchronous flag not set, using HTTP method partnervermittlung petra salzburg POST, with a partnersuche am bodensee friedrichshafen Content-Type header field of single frauen in der nähe brennberg application/expect-ct-report, and an entity body consisting of partnersuche am bodensee youtube report body.

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singlebörse ohne premium mitgliedschaft beenden When UAs support the Expect-CT header, it becomes a potential vector for hostile header attacks against site owners. If a site owner uses a certificate issued by a certificate authority which does not embed SCTs nor serve SCTs via OCSP or TLS extension, a malicious server operator or attacker could temporarily reconfigure the host to comply with the UA’s CT policy, and add the Expect-CT header in enforcing mode with a long single de kostenlos xp max-age. Implementing user agents would note this as an Expect-CT Host (see frauen suchen männer für eine nacht). After having done this, the configuration could then be reverted to not comply with the CT policy, prompting failures. Note this scenario would require the attacker to have substantial control over the infrastructure in question, being able to obtain different certificates, change server software, or act as a man-in-the-middle in connections.2 männer suchen eine frau

partnervermittlung salzburg umgebung Site operators could themselves only cure this situation by one of: reconfiguring their web server to transmit SCTs using the TLS extension defined in Section 3.3 of [RFC6962], obtaining a certificate from an alternative certificate authority which provides SCTs by one of the other methods, or by waiting for the user agents’ persisted notation of this as an Expect-CT host to reach its partnersuche am bodensee immenstaad max-age. User agents may choose to implement mechanisms for users to cure this situation, as noted in frauen suchen männer essen.singles in der nähe xanten

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partnersuche quoka kleinanzeigen There is a security trade-off in that low maximum values provide a narrow window of protection for users that visit the Known Expect-CT Host only infrequently, while high maximum values might result in a denial of service to a UA in the event of a hostile header attack, or simply an error on the part of the site-owner.partnersuche rumänische frauen

singlebörse kärnten urlaub There is probably no ideal maximum for the ist partnersuche de kostenlos php max-age directive. Since Expect-CT is primarily a policy-expansion and investigation technology rather than an end-user protection, a value on the order of 30 days (2,592,000 seconds) may be considered a balance between these competing security concerns.partnersuche frauen aus russland

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singlebörse ohne premium mitgliedschaft elitepartner Another kind of hostile header attack uses the partnersuche frauen zu anspruchsvoll report-uri mechanism on many hosts not currently exposing SCTs as a method to cause a denial-of-service to the host receiving the reports. If some highly-trafficked websites emitted a non-enforcing Expect-CT header with a single de kostenlos runterladen report-uri, implementing UAs’ reports could flood the reporting host. It is noted in free dating sites in las vegas that UAs should limit the rate at which they emit reports, but an attacker may alter the Expect-CT header’s fields to induce UAs to submit different reports to different URIs to still cause the same effect.free dating sites in lagos


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free dating site in costa rica Expect-CT can be used to infer what Certificate Transparency policy is in use, by attempting to retrieve specially-configured websites which pass one user agents’ policies but not another’s. Note that this consideration is true of UAs which enforce CT policies without Expect-CT as well.free dating sites in latvia

free dating sites in romania Additionally, reports submitted to the free dating sites in the philippines report-uri could reveal information to a third party about which webpage is being accessed and by which IP address, by using individual free dating sites in texas report-uri values for individually-tracked pages. This information could be leaked even if client-side scripting were disabled.free dating sites in london

free dating sites in ri Implementations must store state about Known Expect-CT Hosts, and hence which domains the UA has contacted.free dating sites in los angeles

free dating sites in russia Violation reports, as noted in free dating sites in lithuania, contain information about the certificate chain that has violated the CT policy. In some cases, such as organization-wide compromise of the end-to-end security of TLS, this may include information about the interception tools and design used by the organization that the organization would otherwise prefer not be disclosed.free dating sites in luxemburg

free dating sites in dominican republic Because Expect-CT causes remotely-detectable behavior, it’s advisable that UAs offer a way for privacy-sensitive users to clear currently noted Expect-CT hosts, and allow users to query the current state of Known Expect-CT Hosts.partnersuche wo frauen männer kaufen


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free dating sites in russian When the UA detects a Known Expect-CT Host in violation of the UA’s CT Policy, users will experience denials of service. It is advisable for UAs to explain the reason why.free dating sites for seniors

free dating sites in french Normative References

[RFC2119]
Bradner, S., “free dating sites for mobile phones”, BCP 14, RFC 2119, free dating sites for germany, March 1997, <free dating sites in finland>.
[RFC2616]
Fielding, R., Gettys, J., Mogul, J., Frystyk, H., Masinter, L., Leach, P., and T. Berners-Lee, “partnervermittlung odessa landkarte”, RFC 2616, partnervermittlung odessa lage, June 1999, <kontaktbörse schweiz kostenlos>.
[RFC3339]
Klyne, G. and C. Newman, “frauen suchen männer in regensburg”, RFC 3339, deutsche männer suchen rumänische frauen, July 2002, <deutsche männer suchen russische frauen>.
[RFC3986]
Berners-Lee, T., Fielding, R., and L. Masinter, “russische frauen suchen reiche männer”, STD 66, RFC 3986, frauen suchen männer rosenheim, January 2005, <junge männer suchen reiche frauen>.
[RFC5234]
Crocker, D., Ed. and P. Overell, “rtl männer suchen frauen”, STD 68, RFC 5234, männer suchen russische frauen, January 2008, <männer suchen reiche frauen>.
[RFC5246]
Dierks, T. and E. Rescorla, “partnersuche junge frauen”, RFC 5246, partnersuche junge frauen ältere männer, August 2008, <partnersuche japanische frauen>.
[RFC6797]
Hodges, J., Jackson, C., and A. Barth, “free dating sites in youngstown ohio”, RFC 6797, free dating sites in yuma az, November 2012, <free dating sites in yakima>.
[RFC6962]
Laurie, B., Langley, A., and E. Kasper, “free dating sites in your area”, RFC 6962, free dating sites in yorkshire, June 2013, <free dating sites in new york>.
[RFC7230]
Fielding, R., Ed. and J. Reschke, Ed., “free dating sites in york”, RFC 7230, free dating sites in south yorkshire, June 2014, <free dating sites in york pa>.
[RFC7234]
Fielding, R., Ed., Nottingham, M., Ed., and J. Reschke, Ed., “free dating site in yemen”, RFC 7234, die zeit partnersuche vergleich, June 2014, <partnersuche linz land kaufen>.
[RFC7468]
Josefsson, S. and S. Leonard, “partnersuche in luzern jobs”, RFC 7468, frauen über 50 und partnersuche, April 2015, <partnersuche ungarische frauen>.
[W3C.REC-html401-19991224]
Raggett, D., Hors, A., and I. Jacobs, “partnersuche linz land mieten”, World Wide Web Consortium Recommendation REC-html401-19991224, December 1999, <partnersuche frauen litauen>.

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