📄 04_3remove_services.php.html
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<TR> <TD> <P><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">[vbird @tsai vbird]# </FONT><FONT COLOR="#ffff00">netstat -a</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">AActive Internet connections (servers and established)</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">Proto Recv-Q Send-Q Local Address Foreign Address State</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">tcp 0 0 *:pop3 *:* LISTEN</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">tcp 0 0 *:imap *:* LISTEN</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">tcp 0 0 *:ftp *:* LISTEN</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">tcp 0 0 *:ssh *:* LISTEN</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">tcp 0 0 *:smtp *:* LISTEN</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">tcp 0 20 192.168.1.2:ssh 192.168.1.11:1391 ESTABLISHED</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">udp 0 0 *:1238 *:*</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">Active UNIX domain sockets (servers and established)</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">Proto RefCnt Flags Type State I-Node Path</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">unix 10 [ ] DGRAM 768 /dev/log</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">unix 2 [ ] DGRAM 304058</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">unix 2 [ ] DGRAM 303994</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">unix 2 [ ] DGRAM 303972</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">unix 2 [ ] DGRAM 70794</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">unix 2 [ ] DGRAM 70743</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">unix 2 [ ] DGRAM 27533</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">unix 2 [ ] DGRAM 895</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">unix 2 [ ] DGRAM 785</FONT></FONT></FONT></SPAN></FONT></P> </TD> </TR> </TABLE> <P STYLE="margin-bottom: 0cm"><FONT COLOR="#000000">如上所示,加入<FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> -a </FONT></SPAN></FONT><FONT COLOR="#000000">就是说将所有在机器上『</FONT><FONT COLOR="#3333ff">监听<FONT FACE="Tahoma, serif"><SPAN LANG="en-US">(LISTEM)</FONT></SPAN></FONT><FONT COLOR="#000000">』或者是『</FONT><FONT COLOR="#3333ff">创建挂机</FONT><FONT COLOR="#000000">』的服务通通列出的意思,不过,服务的名称已经使用<FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> /etc/services </FONT></SPAN></FONT><FONT COLOR="#000000">里面的名称了,而不是使用<FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> port </FONT></SPAN></FONT><FONT COLOR="#000000">的数字!如上所示,当前我主机上面的服务共打开了</FONT><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> </SPAN></FONT> </P> <UL> <LI><P STYLE="margin-bottom: 0cm"><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"><FONT COLOR="#000000">pop3</FONT> </SPAN></FONT> </P> <LI><P STYLE="margin-bottom: 0cm"><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"><FONT COLOR="#000000">imap</FONT> </SPAN></FONT> </P> <LI><P STYLE="margin-bottom: 0cm"><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"><FONT COLOR="#000000">ftp</FONT> </SPAN></FONT> </P> <LI><P STYLE="margin-bottom: 0cm"><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"><FONT COLOR="#000000">ssh</FONT> </SPAN></FONT> </P> <LI><P STYLE="margin-bottom: 0cm"><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"><FONT COLOR="#000000">smtp</FONT> </SPAN></FONT> </P> </UL> <P STYLE="margin-bottom: 0cm"><FONT COLOR="#000000">等服务(</FONT><FONT COLOR="#3333ff">就是<FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> LISTEN </FONT></SPAN></FONT><FONT COLOR="#3333ff">的那几个咚咚罗</FONT><FONT COLOR="#000000">!)至于已经创建的服务就只有<FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> ssh </FONT></SPAN></FONT><FONT COLOR="#000000">这一个罗!那如果我想要知道<FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> port </FONT></SPAN></FONT><FONT COLOR="#000000">呢?呵呵,就使用底下的指令吧!</FONT><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> <BR> </SPAN></FONT> </P> <TABLE COLS=1 WIDTH=80% CELLPADDING=2 CELLSPACING=2 BGCOLOR="#000000"> <TR> <TD> <P><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">[vbird @tsai vbird]# </FONT><FONT COLOR="#ffff00">netstat -an</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">Active Internet connections (servers and established)</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">Proto Recv-Q Send-Q Local Address Foreign Address State</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">tcp 0 0 0.0.0.0:110 0.0.0.0:* LISTEN</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">tcp 0 0 0.0.0.0:143 0.0.0.0:* LISTEN</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">tcp 0 0 0.0.0.0:21 0.0.0.0:* LISTEN</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">tcp 0 20 192.168.1.2:22 192.168.1.11:1391 ESTABLISHED</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">udp 0 0 0.0.0.0:1238 0.0.0.0:*</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">Active UNIX domain sockets (servers and established)</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">Proto RefCnt Flags Type State I-Node Path</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">unix 10 [ ] DGRAM 768 /dev/log</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">unix 2 [ ] DGRAM 304058</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">unix 2 [ ] DGRAM 303994</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">unix 2 [ ] DGRAM 303972</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#ffffff">unix
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