Apache log .. potential abuse .. help me out

[mr_daredevil2003]

Hi,
I would like to know what this logs meant.. and are they any potential
hacking attempts .. If this is some hacking or abuse .. can nay one tell me how to protect form these attacks....




4.80.99.100 - - [23/Apr/2006:15:18:21 +0530] "GET
http://proxyking.servehttp.com:8080/...e?service=Echo HTTP/1.0"
200 7454
GET /.eBay/ws/ HTTP/1.1

218.166.50.157 - - [25/Apr/2006:00:26:14 +0530] "GET /.ebay/ HTTP/1.0"
200 7411
218.166.49.99 - - [25/Apr/2006:00:26:15 +0530] "GET /.ebay/ HTTP/1.0"
200 7411

63.212.171.193 - - [25/Apr/2006:09:26:40 +0530] "GET /.eBay/ws/
HTTP/1.1" 200 7429

62.58.50.81 - - [25/Apr/2006:12:42:30 +0530] "CONNECT 205.231.29.241:25
HTTP/1.0" 200 2765
62.58.50.81 - - [25/Apr/2006:12:42:33 +0530] "POST
http://205.231.29.241:25/ HTTP/1.0" 200 2864

yakuza.exigo.ch - - [25/Apr/2006:16:38:17 +0530] "GET
http://www.astalavista.net/v2/?cmd=proxy&act=pt HTTP/1.1" 403 453
yakuza.exigo.ch - - [25/Apr/2006:16:38:29 +0530] "GET
http://www.astalavista.net/v2/?cmd=proxy&act=pt HTTP/1.1" 403 453
yakuza.exigo.ch - - [25/Apr/2006:16:39:32 +0530] "GET
http://www.astalavista.net/v2/?cmd=proxy&act=pt HTTP/1.1" 403 453
yakuza.exigo.ch - - [25/Apr/2006:16:49:29 +0530] "GET
http://www.astalavista.net/v2/?cmd=proxy&act=pt HTTP/1.1" 403 453
yakuza.exigo.ch - - [25/Apr/2006:16:49:36 +0530] "GET
http://www.astalavista.net/v2/?cmd=proxy&act=pt HTTP/1.1" 403 453

lj601394.inktomisearch.com - - [25/Apr/2006:18:27:09 +0530] "GET
/robots.txt HTTP/1.0" 200 7435
lj601303.inktomisearch.com - - [25/Apr/2006:18:27:12 +0530] "GET
/.eBay/ws/ HTTP/1.0" 200 7429

najya.cit-network.net - - [27/Apr/2006:00:41:48 +0530] "GET
http://nntime.com/235490.htm HTTP/1.1" 200 7435