SUMMARY OF SMALLBERG SURVEYS

This is a summary of the surveys of Telnet, FTP and Mail (SMTP) servers conducted by David Smallberg in December 1982 and January and February 1983 as reported in RFC 832-843, 845-846. This memo extracts the number of hosts that accepted the connection to their server for each of Telnet, FTP, and SMTP, and compares it to the total host in the Internet (not counting TACs or ECHOS).

One would not expect the percentage to reach 100, since some hosts will be down when the surveys are run, but many hosts are for special purposes and don't offer these services. We estimate that 37 hosts or 11 percent are in this catagory and the highest percentage one could reasonably expect is 89.

                                TELNET
      
      RFC        DATE        ACCEPT        TOTAL        PERCENT
      ---        ----        ------        -----        -------
      832      7 Dec 82        83           315            26
      833     14 Dec 82       103           314            33
      834     22 Dec 82       102           314            32
      835     28 Dec 82        95           314            30
      836      4 Jan 83       151           315            48
      837     11 Jan 83       171           323            53
      838     18 Jan 83       172           323            53
      839     25 Jan 83       182           323            56
      842      1 Feb 83       183           382            48
      843      8 Feb 83       187           329            57
      845     15 Feb 83       176           329            53
      846     22 Feb 83       190           325            56

FTP

      RFC        DATE        ACCEPT        TOTAL        PERCENT
      ---        ----        ------        -----        -------
      832      7 Dec 82        70           315            26
      833     14 Dec 82        90           314            29
      834     22 Dec 82        80           314            25
      835     28 Dec 82        80           314            25
      836      4 Jan 83       132           315            42
      837     11 Jan 83       153           323            47
      838     18 Jan 83       159           323            49
      839     25 Jan 83       165           323            51
      842      1 Feb 83       170           328            52
      843      8 Feb 83       174           389            45
      845     15 Feb 82       169           329            51
      846     22 Feb 83       181           325            56

SMTP

      RFC        DATE        ACCEPT        TOTAL        PERCENT
      ---        ----        ------        -----        -------
      832      7 Dec 82        63           315            20
      833     14 Dec 82        82           314            26
      834     22 Dec 82        82           314            26
      835     28 Dec 82        72           314            23
      836      4 Jan 83       124           315            39
      837     11 Jan 83       145           323            45
      838     18 Jan 83       154           323            48
      839     25 Jan 83       159           323            49
      842      1 Feb 83       169           328            52
      843      8 Feb 83       170           329            52
      845     15 Feb 83       169           329            51
      846     22 Feb 83       178           325            55