Cisco CISCO1401 Software Guide - Page 264
Simple Mail Transport Protocol
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Page 264 highlights
Appendix B Protocol Filters Table B-3 IP Port Protocols Protocol Additional Identifier ISO Designator TCP port service multiplexer tcpmux 1 echo - 7 discard (9) - 9 systat (11) - 11 daytime (13) - 13 netstat (15) - 15 Quote of the Day qotd 17 quote Message Send Protocol msp 18 ttytst source chargen 19 FTP Data ftp-data 20 FTP Control (21) ftp 21 Secure Shell (22) ssh 22 Telnet - 23 Simple Mail Transport Protocol SMTP 25 mail time timserver 37 Resource Location Protocol RLP 39 IEN 116 Name Server name 42 whois nicname 43 43 Domain Name Server DNS 53 domain MTP - 57 BOOTP Server - 67 BOOTP Client - 68 TFTP - 69 gopher - 70 rje netrjs 77 finger - 79 Hypertext Transport Protocol HTTP 80 www ttylink link 87 Kerberos v5 Kerberos 88 krb5 supdup - 95 hostname hostnames 101 Cisco Aironet 1400 Series Wireless Bridges Software Configuration Guide B-4 OL-4059-01
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