7 comments:

  1. 21/20-TCP
    22/23-UDP
    25-SMTP
    53-DNS
    67/68-DHCP
    69-TFTP
    80-HTTP
    110-POP
    123-NTP
    143-IMAP
    161/162-SNMP
    179-BGP
    389-LDAP
    443-HTTPS
    636-LDAPS
    989-FTP over SSL
    569-MSN
    1080-SOCKS
    445-MICROSOFT DS
    194-IRC
    156-SQL server

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  2. NAME AND NO OF 20 COMMON PORTS

    20, 21 File Transfer Protocol (FTP)
    22 Secure Shell (SSH)
    23 Telnet
    25 Simple Mail Transfer Protocol (SMTP)
    50, 51 IPSec
    53 Domain Name Server (DNS)
    67, 68 Dynamic Host Configuration Protocol (DHCP)
    69 Trivial File Transfer Protocol (TFTP)
    80 HyperText Transfer Protocol (HTTP)
    110 Post Office Protocol (POP3)
    119 Network News Transport Protocol (NNTP)
    123 Network Time Protocol (NTP)
    135-139 NetBIOS
    143 Internet Message Access Protocol (IMAP4)
    161,169 Simple Network Management Protocol (SNMP)
    389 Lightweight Directory Access Protocol
    443 HTTP with Secure Sockets Layer (SSL)

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  3. 53 Domain Name Server (DNS)
    445-MICROSOFT DS
    69 Trivial File Transfer Protocol (TFTP)
    80 HyperText Transfer Protocol (HTTP)
    110 Post Office Protocol (POP3)
    143 Internet Message Access Protocol (IMAP4)
    161,169 Simple Network Management Protocol (SNMP)
    389 Lightweight Directory Access Protocol
    443 HTTP with Secure Sockets Layer (SSL)
    119 Network News Transport Protocol (NNTP)
    123 Network Time Protocol (NTP)
    135-139 NetBIOS
    20, 21 File Transfer Protocol (FTP)
    22 Secure Shell (SSH)
    23 Telnet
    156-SQL server

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  4. This comment has been removed by the author.

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  5. Name and number of ports:
    18 Message Send Protocol (MSP)
    20 FTP -- Data
    21 FTP -- Control
    22 SSH Remote Login Protocol
    23 Telnet
    25 Simple Mail Transfer Protocol (SMTP)
    53 Domain Name System (DNS)
    69 Trivial File Transfer Protocol (TFTP)
    80 HTTP
    109 POP2
    110 POP3
    115 Simple File Transfer Protocol (SFTP)
    118 SQL Services
    143 Interim Mail Access Protocol (IMAP)
    161 SNMP
    443 HTTPS
    444 Simple Network Paging Protocol (SNPP)
    546 DHCP Client
    547 DHCP Server
    1080 Socks
    119 Newsgroup (NNTP)
    43 WhoIs
    49 Login Host Protocol (Login)
    194 Internet Relay Chat (IRC)

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  6. 21/20-TCP
    22/23-UDP
    25-SMTP
    53-DNS
    67/68-DHCP
    69-TFTP
    80-HTTP
    110-POP
    123-NTP
    143-IMAP
    161/162-SNMP
    179-BGP
    389-LDAP
    443-HTTPS
    636-LDAPS
    989-FTP over SSL
    569-MSN
    1080-SOCKS
    445-MICROSOFT DS
    194-IRC
    156-SQL server

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  7. PORT NUMBER AND NAME
    1. 80 HHTP OR 443 HHTP
    2. 50 IPSEC OR 51 IPSEC
    3. 20 FTP OR 21 FTP
    4. 52 SSP
    5. 110 POP3
    6. 119 NNTP
    7. 123 NTP
    8. 23 TELNET
    9. 111 RPC
    10. 118 SQL
    11. 117 UUCP
    12. 25 SMPT
    13.514 RSH
    14. 38 RAP
    15. 1 TCP
    16. 399 DECNET
    17. 69 TFTP
    18.465 SMPT TLS/SSL
    19.7 CP
    20.179 BGP

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