📄 04_3remove_services.php.html
字号:
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><FONT COLOR="#000000">如上所示，我接通的服务通道只有<FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> 22 </FONT></SPAN></FONT><FONT COLOR="#000000">这一个，而其他的你可以参照上面的指令输出结果来对照，所以你就可以知道罗：<FONT FACE="Tahoma, serif"><SPAN LANG="en-US">pop3 </FONT></SPAN></FONT><FONT COLOR="#000000">为<FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> 110 </FONT></SPAN></FONT><FONT COLOR="#000000">而<FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> imap </FONT></SPAN></FONT><FONT COLOR="#000000">为<FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> 143 </FONT></SPAN></FONT><FONT COLOR="#000000">呵呵！就是这样罗！因此，通过此一指令，就可以轻易的理解当前主机的运作状况与服务状态罗！当然罗，<FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> netstat </FONT></SPAN></FONT><FONT COLOR="#000000">的用途不止于此，您可以使用<FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> </FONT><FONT COLOR="#3333ff">man netstat</FONT><FONT COLOR="#000000"> </FONT></SPAN></FONT><FONT COLOR="#000000">来查阅一番喔！相信对你的主机会有更大的理解呦！</FONT></P></UL><UL> <LI><P><FONT COLOR="#000099">检测你打开的通信网关（<FONT FACE="Tahoma, serif"><SPAN LANG="en-US">port</FONT></SPAN></FONT><FONT COLOR="#000099">）</FONT><FONT COLOR="#000000">：</FONT><FONT COLOR="#000099">使用<FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> nmap </FONT></SPAN></FONT><FONT COLOR="#000099">套件</FONT><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> </SPAN></FONT> </P> <DT><FONT COLOR="#000000">将一些不必要的套件移除之后，再来则是要来检测一下你当前打开的网关有哪些？这时就需要使用到<FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> nmap </FONT></SPAN></FONT><FONT COLOR="#000000">这个软件了，你可以单击<FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> </FONT></SPAN></FONT><FONT COLOR="#000000"><A HREF="../download/nmap-2.54BETA25-1.i386.rpm">这里</A><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> </FONT></SPAN></FONT><FONT COLOR="#000000">下装。</FONT><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> </SPAN></FONT> </DT><DT> <FONT COLOR="#000000"> </FONT><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> </SPAN></FONT> </DT> <OL><LI><P STYLE="margin-bottom: 0cm"> <FONT COLOR="#3333ff">安装</FONT><FONT COLOR="#000000">：就是使用<FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> rpm </FONT></SPAN></FONT><FONT COLOR="#000000">安装呀！直接下达：</FONT><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"><FONT FACE="細明體"><FONT COLOR="#3333ff">rpm -ivh nmap-2.54BETA25-1.i386.rpm</FONT></FONT><FONT COLOR="#000000"> </FONT></SPAN></FONT><FONT COLOR="#000000">即可。</FONT><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> <BR> </SPAN></FONT> </P> <LI><P STYLE="margin-bottom: 0cm"><FONT COLOR="#3333ff">检测</FONT><FONT COLOR="#000000">：下达<FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> nmap your.host.IP </FONT></SPAN></FONT><FONT COLOR="#000000">，例如我的主机<FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> IP </FONT></SPAN></FONT><FONT COLOR="#000000">为<FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> 192.168.1.2 </FONT></SPAN></FONT><FONT COLOR="#000000">则<FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> </FONT><FONT FACE="細明體"><FONT COLOR="#3333ff">nmap 192.168.1.2</FONT></FONT></SPAN></FONT><FONT COLOR="#000000">。</FONT><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> </SPAN></FONT> </P> <OL> <P STYLE="margin-bottom: 0cm"><FONT COLOR="#000000">结果有点象这样：</FONT><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#000066">Starting nmap V. 2.54BETA25 ( www.insecure.org/nmap/ )</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#000066">Interesting ports on tsai.adsldns.org (192.168.1.2):</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#000066">(The 1534 ports scanned but not shown below are in state: closed)</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#000066">Port State Service</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#000066">21/tcp open ftp</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#000066">23/tcp open telnet</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#000066">25/tcp open smtp</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#000066">80/tcp open http</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#000066">109/tcp open pop-2</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#000066">110/tcp open pop-3</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#000066">139/tcp open netbios-ssn</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#000066">143/tcp open imap2</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#000066">3128/tcp open squid-http</FONT></FONT></FONT> <BR><FONT SIZE=2><FONT FACE="細明體"><FONT COLOR="#000066">3306/tcp open mysql</FONT></FONT></FONT> <BR></SPAN></FONT><FONT COLOR="#000000"><FONT SIZE=2><FONT FACE="細明體">上面就是我们有打开的服务</FONT></FONT><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"><FONT SIZE=2><FONT FACE="細明體"> port </FONT></FONT></FONT></SPAN></FONT><FONT COLOR="#000000"><FONT SIZE=2><FONT FACE="細明體">啦，</FONT></FONT><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"><FONT SIZE=2><FONT FACE="細明體">WWW</FONT></FONT></FONT></SPAN></FONT><FONT COLOR="#000000"><FONT SIZE=2><FONT FACE="細明體">为</FONT></FONT><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"><FONT SIZE=2><FONT FACE="細明體"> 80 port </FONT></FONT></FONT></SPAN></FONT><FONT COLOR="#000000"><FONT SIZE=2><FONT FACE="細明體">而</FONT></FONT><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"><FONT SIZE=2><FONT FACE="細明體"> telnet </FONT></FONT></FONT></SPAN></FONT><FONT COLOR="#000000"><FONT SIZE=2><FONT FACE="細明體">使用</FONT></FONT><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"><FONT SIZE=2><FONT FACE="細明體"> 23 port </FONT></FONT></FONT></SPAN></FONT><FONT COLOR="#000000"><FONT SIZE=2><FONT FACE="細明體">，邮件的传送则使用</FONT></FONT><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"><FONT SIZE=2><FONT FACE="細明體"> 25 </FONT></FONT></FONT></SPAN></FONT><FONT COLOR="#000000"><FONT SIZE=2><FONT FACE="細明體">与</FONT></FONT><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"><FONT SIZE=2><FONT FACE="細明體"> 110 port </FONT></FONT></FONT></SPAN></FONT><FONT COLOR="#000000"><FONT SIZE=2><FONT FACE="細明體">！</FONT></FONT></FONT></P> </OL> <LI><P STYLE="margin-bottom: 0cm"><FONT COLOR="#3333ff">限制</FONT><FONT COLOR="#000000">：这个软件请千万不要去检测他人的站点，否则可能会被提交告诉喔！</FONT><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> <BR> </SPAN></FONT> </P> <LI><P><FONT COLOR="#3333ff">解除安装</FONT><FONT COLOR="#000000">：如果确定运行完毕了，理解你所打开的服务之后，你可以直接将这套软件移除之，以免不小心运行后，导致别人的抗议：</FONT><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"><FONT FACE="細明體"><FONT COLOR="#000099">rpm -e nmap</FONT></FONT><FONT COLOR="#000000"> </FONT></SPAN></FONT><FONT COLOR="#000000">即可。</FONT><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> </SPAN></FONT> </P> </OL></UL><UL> <DT STYLE="margin-bottom: 0.5cm"><FONT COLOR="#000000">网络上一些玩家都建议大家在使用<FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> Linux </FONT></SPAN></FONT><FONT COLOR="#000000">的时候，以较安全的方式来打开你的站点，当然，这是网管人员所必须要注意的事项！如果你对于网管很有兴趣的话，就一定需要注意一下这些网络安全的课题！当然罗，创建防火墙也是蛮必须的！另外，也必须常常的更新你的<FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> Linux </FONT></SPAN></FONT><FONT COLOR="#000000">套件的最新版本本的信息喔！我想，过一阵子我可能会专门辟一区来说明<FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> RedHat 6.1 </FONT></SPAN></FONT><FONT COLOR="#000000">的安全升级套件的说明数据。</FONT><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> </SPAN></FONT> </DT></UL><UL> <DT STYLE="margin-bottom: 0.5cm"><FONT COLOR="#000000">需要注意的是，由于你刚刚这样子下来，可能动到了系统的一些设定了，因此，对于你的<FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> sendmail </FONT></SPAN></FONT><FONT COLOR="#000000">可能会有若干的不良影响（以我为例，我完成的上面的动作之后，虽然<FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> port 110 </FONT></SPAN></FONT><FONT COLOR="#000000">与<FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> port 25 </FONT></SPAN></FONT><FONT COLOR="#000000">是正常的，但是寄信就是很慢很慢，这个时候，就得需要以<FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> netconf </FONT></SPAN></FONT><FONT COLOR="#000000">这个程序来重新生成<FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> sendmail </FONT></SPAN></FONT><FONT COLOR="#000000">的程序代码。）因此，建议完成的上面的动作之后，请到<FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> <A HREF="../linux/linux_25mailsendmail.html">mail server</A> </FONT></SPAN></FONT><FONT COLOR="#000000">那一篇文章中，看一看如何使用<FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> netconf </FONT></SPAN></FONT><FONT COLOR="#000000">来重新设定与生成<FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> sendmail.cf </FONT></SPAN></FONT><FONT COLOR="#000000">文件！</FONT><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> </SPAN></FONT> </DT></UL><DL> <DT><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"><FONT COLOR="#3333ff"><FONT SIZE=2><FONT FACE="新細明體">2002/ 01/01</FONT></FONT></FONT></SPAN></FONT><FONT COLOR="#3333ff"><FONT SIZE=2><FONT FACE="新細明體">以来统计人数</FONT></FONT></FONT><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"> <BR><IMG SRC="http://linux.vbird.org/cgi-bin/Count.cgi?dd=A&ft=0&sh=T&pad=Y&df=vbird_safe_03.dat" NAME="图形7" ALIGN=BOTTOM WIDTH=60 HEIGHT=15 BORDER=0> </SPAN></FONT> </DT><HR></DL><P ALIGN=CENTER STYLE="margin-bottom: 0cm"><A HREF="http://linux.vbird.org/" TARGET="_top"><IMG SRC="http://linux.vbird.org/VBirdTitle2.jpg" NAME="图形8" ALIGN=BOTTOM WIDTH=90 HEIGHT=25 BORDER=0></A><FONT FACE="Tahoma, serif"><SPAN LANG="en-US"><A HREF="http://linux.vbird.org/linux_basic"><IMG SRC="http://linux.vbird.org/icon_system.gif" NAME="图形9" ALIGN=BOTTOM WIDTH=90 HEIGHT=25 BORDER=0></A><A HREF="http://linux.vbird.org/linux_server"><IMG SRC="http://linux.vbird.org/icon_server.gif" NAME="图形10" ALIGN=BOTTOM WIDTH=90 HEIGHT=25 BORDER=0></A><A HREF="http://linux.vbird.org/linux_security"><IMG SRC="http://linux.vbird.org/icon_security.jpg" NAME="图形11" ALIGN=BOTTOM WIDTH=90 HEIGHT=25 BORDER=0></A><A HREF="http://phorum.vbird.org/" TARGET="_blank"><IMG SRC="http://linux.vbird.org/icon_forums.gif" NAME="图形12" ALIGN=BOTTOM WIDTH=90 HEIGHT=25 BORDER=0></A><A HREF="http://linux.vbird.org/adsl"><IMG SRC="http://linux.vbird.org/icon_adsl.gif" NAME="图形13" ALIGN=BOTTOM WIDTH=90 HEIGHT=25 BORDER=0></A><BR><FONT SIZE=2><FONT COLOR="#000066">Designed by <A HREF="mailto:vbird@tsai.adsldns.org">VBird</A>during 2001-2004. Aerosol Lab.</FONT></FONT></SPAN></FONT></P></BODY></HTML>⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -