2007年9月27日の早朝にTrackback SPAM攻撃してきた，IPアドレスです．

grep "27/Sep/2007:0" access_log | grep POST | grep tbping ¥
| sed 's/^\([0-9.]*\) .*$/\1/' | sort -n | uniq -c

あきれたことに，99個もの個別アドレスから攻めてきています．多数の個別のアドレスから，同じ時間帯に，同じBLOGに，同じような内容のTBを送ってくるということで，間違いなくZombie PCでしょう．

      1 12.180.200.115
      1 64.131.67.150
      1 64.18.158.194
      2 64.202.165.131
      1 64.202.165.133
      3 64.202.165.201
      1 64.22.114.234
      3 64.34.66.29
      1 64.72.120.56
      4 64.85.160.107
      1 65.98.60.90
      1 66.232.105.206
      1 66.232.113.128
      1 66.232.113.242
      1 66.246.246.50
      3 66.6.122.148
      1 66.79.166.107
      1 66.79.171.101
      1 66.90.104.154
      1 66.90.77.2
      1 67.159.30.105
      1 67.159.30.9
      1 68.178.224.222
      1 69.16.232.156
      1 69.50.210.8
      2 69.50.218.150
      1 69.65.29.242
      2 70.85.147.194
      1 70.85.147.66
      1 70.87.122.212
      2 71.18.216.36
      1 72.18.203.22
      2 72.232.119.234
      1 72.232.150.250
      1 72.232.182.234
      2 72.232.250.226
      2 72.232.250.50
      1 72.36.237.90
      1 72.46.130.23
      1 72.46.130.27
      1 72.9.152.150
      2 74.200.78.120
      1 74.208.14.215
      8 74.208.14.63
      1 74.208.9.221
      1 74.220.207.103
      1 74.53.25.18
      1 75.126.132.22
      1 75.126.157.163
      1 75.126.230.154
      2 76.67.200.146
      1 81.0.234.120
      1 81.169.137.209
      1 82.122.239.185
      1 83.217.66.50
      2 84.18.200.120
      2 85.12.31.76
      1 88.198.175.78
      1 91.186.4.53
      1 140.129.68.124
      1 166.70.207.2
      2 193.86.238.12
      1 198.145.112.224
      1 199.231.148.223
      4 202.131.89.100
      1 203.146.251.107
      1 204.13.236.244
      1 204.157.15.136
      1 206.123.73.15
      1 207.58.130.162
      2 208.109.191.100
      1 208.109.211.150
      2 208.109.248.20
      1 208.109.254.156
      1 208.110.218.138
      4 208.113.144.5
      1 208.113.170.9
      1 208.113.204.25
      1 208.116.41.5
      1 208.122.1.166
      2 208.122.14.114
      2 208.53.131.46
      2 208.53.138.212
      3 208.53.138.22
      1 208.64.140.248
      1 208.75.150.40
      1 209.139.208.178
      2 209.200.19.180
      1 211.1.193.60
      1 211.147.224.140
      1 212.112.241.44
      2 212.227.114.150
      1 212.227.65.75
      2 212.27.63.204
      2 213.251.189.201
      3 213.251.189.203
      1 216.176.180.122
      1 217.160.142.111

24bitのサブネットで数えてみても89あります．敵もなかなかやりますな．

上記IPアドレスについて，当分の間上位24bitのサブネットとして，DROPします．