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Cisco NBAR2 Protocol Reference

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The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Learn more about how Cisco is using Inclusive Language.

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Updated:: April 10, 2025

Chapter: Protocols: Y

Protocols: Y
YAHOO
YAHOO-ACCOUNTS
YAHOO-MAIL
YAHOO-MESSENGER
YAHOO-MESSENGER-VIDEO
YAHOO-VOIP-MESSENGER
YAHOO-VOIP-OVER-SIP
YANDEX
YELLOWPAGES-US
YOUKU
YOUTUBE

Protocols: Y

YAHOO


Name/CLI Keyword	yahoo
Full Name	Yahoo
Description	yahoo.com site browsing
Introduced	11.0.0
Deprecated	-
Reference	http://www.yahoo.com
Global ID	13:831
ID	1761
IPv4 Support	Yes
IPv6 Support	Yes
Application Group	other
Business Relevance	business-irrelevant
Category	browsing
Sub Category	consumer-web-browsing
P2P Technology	False
Encrypted	True
Traffic-class	bulk-data
Tunnel	False

YAHOO-ACCOUNTS


Name/CLI Keyword	yahoo-accounts
Full Name	Yahoo Accounts
Description	Yahoo Accounts is a protocol that covers the traffic of user login into one of multiple web services offered by Yahoo!
Introduced	-
Deprecated	-
Reference	http://login.yahoo.com
Global ID	13:533
ID	1083
IPv4 Support	Yes
IPv6 Support	Yes
Application Group	yahoo-group
Business Relevance	business-irrelevant
Category	consumer-internet
Sub Category	consumer-web-browsing
P2P Technology	False
Encrypted	True
Traffic-class	bulk-data
Tunnel	False

YAHOO-MAIL


Name/CLI Keyword	yahoo-mail
Full Name	Yahoo! Mail
Description	Yahoo! Mail is a free e-mail service offered by the American search engine company Yahoo!. It was inaugurated in 1997.Yahoo! Mail was the second largest web-based email service with 310 million users as of October 2011, and the most popular webmail service in the United States.
Introduced	-
Deprecated	-
Reference	http://mail.yahoo.com
Global ID	13:526
ID	1462
IPv4 Support	Yes
IPv6 Support	Yes
Application Group	yahoo-group
Business Relevance	business-irrelevant
Category	consumer-internet
Sub Category	consumer-web-browsing
P2P Technology	False
Encrypted	True
Traffic-class	bulk-data
Tunnel	False

YAHOO-MESSENGER


Name/CLI Keyword	yahoo-messenger
Full Name	Yahoo Messenger
Description	Yahoo messenger is an all-in-one communication tool that uses client-server architecture. The application includes multiple features: instant messaging, phone calls, synchronized online address book, webcam, gaming, emailing and online radio stations.
Introduced	-
Deprecated	-
Reference	http://messenger.yahoo.com/web/
Global ID	13:77
ID	77
IPv4 Support	Yes
IPv6 Support	Yes
Application Group	yahoo-messenger-group
Business Relevance	business-irrelevant
Category	instant-messaging
Sub Category	consumer-multimedia-messaging
P2P Technology	False
Encrypted	False
Traffic-class	multimedia-conferencing
Tunnel	False

YAHOO-MESSENGER-VIDEO


Name/CLI Keyword	yahoo-messenger-video
Full Name	Yahoo Messenger Video
Description	Yahoo Messenger Video is a feature included in Yahoo Messenger. It uses the webcam to allow users to make private video calls and wide broadcasts.
Introduced	11.0.0
Deprecated	-
Reference	https://messenger.yahoo.com/features/webcam/
Global ID	13:594
ID	1533
IPv4 Support	Yes
IPv6 Support	Yes
Application Group	yahoo-messenger-group
Business Relevance	business-irrelevant
Category	consumer-messaging
Sub Category	consumer-multimedia-messaging
P2P Technology	False
Encrypted	False
Traffic-class	multimedia-conferencing
Tunnel	False

YAHOO-VOIP-MESSENGER


Name/CLI Keyword	yahoo-voip-messenger
Full Name	Yahoo VoIP Messenger
Description	Yahoo VoIP Messenger is a feature included in Yahoo Messenger. It allows users to make calls PC to PC or PC to landline/mobile. The underlying protocols are SIP, SSL, STUN-NAT,RTP.
Introduced	-
Deprecated	-
Reference	http://messenger.yahoo.com/features/voice/
Global ID	13:422
ID	674
IPv4 Support	Yes
IPv6 Support	Yes
Application Group	yahoo-messenger-group
Business Relevance	business-irrelevant
Category	consumer-messaging
Sub Category	consumer-multimedia-messaging
P2P Technology	False
Encrypted	False
Traffic-class	voip-telephony
Tunnel	False

YAHOO-VOIP-OVER-SIP


Name/CLI Keyword	yahoo-voip-over-sip
Full Name	Yahoo VoIP over SIP
Description	As a feature of Yahoo messenger, starting from version 8 and above, Yahoo voice uses SIP protocol to commence VoIP calls.
Introduced	-
Deprecated	-
Reference	http://messenger.yahoo.com/
Global ID	13:302
ID	1195
IPv4 Support	Yes
IPv6 Support	Yes
Application Group	yahoo-messenger-group
Business Relevance	business-irrelevant
Category	consumer-messaging
Sub Category	consumer-multimedia-messaging
P2P Technology	False
Encrypted	False
Traffic-class	voip-telephony
Tunnel	False

YANDEX


Name/CLI Keyword	yandex
Full Name	Yandex
Description	Yandex - Russian search engine.
Introduced	14.0.0
Deprecated	-
Reference	http://yandex.ru
Global ID	13:611
ID	760
IPv4 Support	Yes
IPv6 Support	Yes
Application Group	other
Business Relevance	business-irrelevant
Category	browsing
Sub Category	other
P2P Technology	False
Encrypted	False
Traffic-class	transactional-data
Tunnel	False

YELLOWPAGES-US


Name/CLI Keyword	yellowpages-us
Full Name	Yellow Pages
Description	Yellow Pages - Online directory and Mapping services.
Introduced	14.0.0
Deprecated	-
Reference	http://yellowpages.com
Global ID	13:799
ID	1727
IPv4 Support	Yes
IPv6 Support	Yes
Application Group	other
Business Relevance	business-irrelevant
Category	browsing
Sub Category	other
P2P Technology	False
Encrypted	False
Traffic-class	transactional-data
Tunnel	False

YOUKU


Name/CLI Keyword	youku
Full Name	Youku
Description	Youku - Chinese video hosting and sharing service.
Introduced	14.0.0
Deprecated	-
Reference	http://youku.com
Global ID	13:623
ID	1546
IPv4 Support	Yes
IPv6 Support	Yes
Application Group	other
Business Relevance	business-irrelevant
Category	browsing
Sub Category	other
P2P Technology	False
Encrypted	False
Traffic-class	transactional-data
Tunnel	False

YOUTUBE


Name/CLI Keyword	youtube
Full Name	Youtube
Description	YouTube is a video-sharing website. The user can watch videos or upload videos online to share with other users. Youtube works cross platform on: PC, iPhone, Android and BlackBerry. Youtube is using HTTP and RTSP as underlying protocols.
Introduced	-
Deprecated	-
Reference	http://www.youtube.com/t/about_youtube
Global ID	13:82
ID	82
IPv4 Support	Yes
IPv6 Support	Yes
Application Group	google-group
Business Relevance	business-irrelevant
Category	consumer-streaming
Sub Category	consumer-video-streaming
P2P Technology	False
Encrypted	True
Traffic-class	multimedia-streaming
Tunnel	False

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