Network Working Group A. Westine
Request for Comments: 847 D. Smallberg
J. Postel
February, 1983
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
Page 1
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
Page 2
RFC, FYI, BCP