proof of someone banner grabbing me?

[rik <rik () m-net arbornet org>]

tonight when i checked my /var/log/authlog, i noticed the following -

Sep  5 18:15:29 spartacus sshd[32045]: Did not receive identification
string from 68.73.0.31

Sep  5 18:15:44 spartacus sshd[8613]: Bad protocol version identification
'\^V\^C\^A' from 68.73.0.31

Sep  5 18:15:44 spartacus sshd[5376]: Bad protocol version identification
'\^V\^C' from 68.73.0.31

Sep  5 18:15:49 spartacus sshd[9297]: Did not receive identification
string from 68.73.0.31

Sep  5 18:15:50 spartacus sshd[27589]: Bad protocol version identification
'GET / HTTP/1.0' from 68.73.0.31

Sep  5 18:16:17 spartacus sshd[25053]: Connection closed by 68.73.0.31
Sep  5 18:16:17 spartacus sshd[6638]: Connection closed by 68.73.0.31
Sep  5 18:16:17 spartacus sshd[28447]: Connection closed by 68.73.0.31
Sep  5 18:16:17 spartacus sshd[25414]: Connection closed by 68.73.0.31

Sep  5 18:16:17 spartacus sshd[10489]: Did not receive identification
string from 68.73.0.31

Sep  5 18:16:18 spartacus sshd[8764]: Connection closed by 68.73.0.31

Sep  5 18:17:02 spartacus sshd[30620]: Bad protocol version identification
'`' from 68.73.0.31

Sep  5 18:17:02 spartacus sshd[25307]: Bad protocol version identification
'`/bin/id` #' from 68.73.0.31

Sep  5 18:17:02 spartacus sshd[24725]: Bad protocol version identification
'`/usr/bin/id` #' from 68.73.0.31

Sep  5 18:17:04 spartacus sshd[19385]: Did not receive identification
string from 68.73.0.31

am i correct in believing this is someone's attempt to enumerate info on
my machine?

thanks in advance,

-r


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