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
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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
