Archive for February 14, 2007

OSI basic

The five layer TCP/IP model
5. Application layer

DHCPDNSFTPHTTPIMAP4IRCNNTPMIMEPOP3SIPSMTPSNMPSSHTELNETBGPRPCRTPRTCPTLS/SSLSDPSOAPL2TPPPTP

4. Transport layer

TCPUDPDCCPSCTPGTP

3. Network layer

IP (IPv4IPv6) • ARPRARPICMPIGMPRSVPIPSec

2. Data link layer

ATMDTMEthernetFDDIFrame RelayGPRSPPP

1. Physical layer

Ethernet physical layerISDNModemsPLCRS232SONET/SDHG.709Wi-Fi

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