我的adsl-server被攻击了

emailwht

怎么解决?一时google不到相关资料,
#cat /var/log/messages
Jan 18 08:57:30 ADSLserver rpc.statd[2141]: gethostbyname error for ^X?甌X?甌Z?甌Z??8x%8x%8x%8x%8x%8x%8x%8x%8x%62716x%hn%
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Jan 18 08:58:30 ADSLserver rpc.statd[2141]: gethostbyname error for ^X?甌X?甌Z?甌Z??8x%8x%8x%8x%8x%8x%8x%8x%8x%62716x%hn%
51859x%hn220220220220220220220220220220220220220220220220220220220220220220220220220220220220220
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