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TFTP (ÆÕͨÎļþ´«ÊäЭÒé»òÒ»°ãÎļþ´«ÊäЭÒé) ´ó¼ÒÒ»¶¨¼ÇµÃÔÚ2003Äê8ÔÂ12ÈÕÈ«Çò±¬·¢³å»÷²¨£¨Worm.Blaster£©²¡¶¾£¬ÕâÖÖ²¡¶¾»á¼àÌý¶Ë¿Ú69,Ä£Äâ³öÒ»¸öTFTP·þÎñÆ÷£¬²¢Æô¶¯Ò»¸ö¹¥»÷´«²¥Ïß³Ì,²»¶ÏµØËæ»úÉú³É¹¥»÷µØÖ·£¬½øÐÐÈëÇÖ¡£ÁíÍâtftp±»ÈÏΪÊÇÒ»ÖÖ²»°²È«µÄЭÒé¶ø½«Æä¹Ø±Õ£¬Í¬Ê±Ò²ÊÇ·À»ðǽ´ò»÷µÄ¶ÔÏó£¬ÕâÒ²ÊÇÓеÀÀíµÄ¡£²»¹ý tftp»¹ÊÇÓÐÓÃÎäÖ®µØµÄ£¬ÏÂÃæ½²µÄÎļþ´«ÊäºÍ±¸·ÝrouterÅäÖÃÎļþ¶¼Ê±Êµ¼ÊÓ¦Óã¬ËüҲֻʱһÖÖÊֶζøÒÑ¡£
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»·¾³£º·þÎñÆ÷A £ºrhas11
¿Í»§»úB£º rhas101
Ê×ÏÈÓÃrpm –qa | grep tftp¿´Ò»ÏÂtftpÓÐû°²×°£¬Ã»Óеϰ°² װһϡ£
A£ºÔÚ·þÎñÆ÷¶ËÉèÖÃ
#vi /etc/xinetd.d/tftp
service tftp
{
disable = no
socket_type = dgram
protocol = udp
wait = yes
user = root
server = /usr/sbin/in.tftpd
server_args = -s /test
per_source = 11
cps = 100 2
flags = IPv4
}
»òÓÃchkconfig tftp on Ò²¿ÉÒÔ´ò¿ªxinetd´úÀíµÄtftp·þ
#mkdir /test
#service xinetd restart ´ÓÆôxinetd·þÎñ£¬ÒòΪTFTP·þÎñÊÜ¿ØÓëxinetd, xinetdÊǹܷþÎñµÄ·þÎñ£¬ËüÊDz»¿ª¶Ë¿ÚµÄ¡£
ÑéÖ¤Ò»ÏÂTFTPÊÇ·ñÆðÀ´ÁË£º
[root@rhas11 tftp]# netstat -nlp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:32768 0.0.0.0:* LISTEN 3122/rpc.statd
tcp 0 0 127.0.0.1:32781 0.0.0.0:* LISTEN 4035/xinetd
tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 3103/portmap
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 3324/httpd
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 3255/sshd
tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 3213/cupsd
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 3295/sendmail: acce
tcp 0 0 127.0.0.1:6010 0.0.0.0:* LISTEN 3415/0
tcp 0 0 0.0.0.0:443 0.0.0.0:* LISTEN 3324/httpd
udp 0 0 0.0.0.0:32768 0.0.0.0:* 3122/rpc.statd
udp 0 0 0.0.0.0:69 0.0.0.0:* 4035/xinetd
udp 0 0 0.0.0.0:69 0.0.0.0:* 4012/in.tftpd
udp 0 0 0.0.0.0:111 0.0.0.0:* 3103/portmap
udp 0 0 0.0.0.0:754 0.0.0.0:* 3122/rpc.statd
udp 0 0 0.0.0.0:631 0.0.0.0:* 3213/cupsd
A:·þÎñÆ÷¶Ë н¨Ò»Îļþfile
#cd /test
[root@rhas11 test]# ls -l
×ÜÓÃÁ¿ 4
-rw-r--r-- 1 root root 19 5ÔÂ 15 18


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