small wierd stuff in servers

[the]

i gotta 64 man CSS and DOD:S server running on a dula opteron 248 fedora core 4 64 bit

in the DODS server i get a lotta this.

Code:

Bad challenge from 69.162.168.25:3951.
Old challenge from 68.142.232.32:27243.
Old challenge from 68.142.232.33:27243.
Old challenge from 68.142.232.32:27243.
Old challenge from 68.142.232.32:27243.
Old challenge from 68.142.232.32:27243.
Old challenge from 68.142.232.33:27243.
Old challenge from 68.142.232.32:27243.
Bad challenge from 68.142.232.32:27243.
Old challenge from 68.142.232.33:27243.
Bad challenge from 83.152.39.101:1527.
Bad challenge from 65.26.180.204:4052.
Bad challenge from 65.26.180.204:4052.
Old challenge from 68.142.232.32:27243.
Old challenge from 68.142.232.33:27243.
Bad challenge from 217.97.47.116:1749.
Bad challenge from 217.97.47.116:1749.
Bad challenge from 68.142.232.32:27243.
Bad challenge from 68.142.232.32:27243.
Old challenge from 68.142.232.32:27243.
Bad challenge from 68.142.232.32:27243.
Bad challenge from 62.145.136.141:2372.
Bad challenge from 62.145.136.141:2372.
Old challenge from 68.142.232.33:27243.
Bad challenge from 68.142.232.33:27243.
Bad challenge from 85.53.97.72:1763.
Old challenge from 68.142.232.33:27243.
Bad challenge from 68.142.232.33:27243.
Old challenge from 68.142.232.32:27243.
Old challenge from 68.142.232.33:27243.
Old challenge from 68.142.232.32:27243.
Old challenge from 68.142.232.33:27243.
Old challenge from 68.142.232.32:27243.
Old challenge from 68.142.232.32:27243.
Old challenge from 68.142.232.32:27243.
Old challenge from 68.142.232.33:27243.
Old challenge from 68.142.232.32:27243.
Bad challenge from 68.142.232.32:27243.
Bad challenge from 85.53.97.72:4740.
Old challenge from 68.142.232.32:27243.
Old challenge from 68.142.232.33:27243.
Bad challenge from 68.142.232.32:27243.
Old challenge from 68.142.232.33:27243.
Old challenge from 68.142.232.32:27243.
Bad challenge from 68.142.232.33:27243.
Old challenge from 68.142.232.32:27243.
Bad challenge from 68.142.232.33:27243.
Bad challenge from 85.53.103.116:3961.

in CSS i get a lotta "free osudns list alreayd full" or soemthing like that.

id like it to stop. any ideas?

[insanity]

resolved 68.142.232.32 to scan1.ase.games.re2.yahoo.com
resolved 68.142.232.33 to scan2.ase.games.re2.yahoo.com

Possibly scanners trying to index servers?