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<HTML><HEAD> <TITLE>BBS水木清华站∶精华区</TITLE></HEAD><BODY><CENTER><H1>BBS水木清华站∶精华区</H1></CENTER>发信人: zixia (Do you zixia tonight), 信区: Linux <BR>标 题: 1. Introduction <BR>发信站: BBS 水木清华站 (Wed Oct 11 01:16:23 2000) WWW-POST <BR> <BR> Linux 2.4 Packet Filtering HOWTO: <BR>Introduction
<BR> Next Previous Contents
<BR>
<BR> ----------------------------------------------------------------------
<BR>
<BR>1. Introduction
<BR>
<BR> Welcome, gentle reader.
<BR>
<BR> It is assumed you know what an IP address, a network address, a netmask,
<BR> routing and DNS are. If not, I recommend that you read the Network
<BR> Concepts HOWTO.
<BR>
<BR> This HOWTO flips between a gentle introduction (which will leave you
<BR> feeling warm and fuzzy now, but unprotected in the Real World) and raw
<BR> full-disclosure (which would leave all but the hardiest souls confused,
<BR> paranoid and seeking heavy weaponry).
<BR>
<BR> Your network is not secure. The problem of allowing rapid, convenient
<BR> communication while restricting its use to good, and not evil intents is
<BR> congruent to other intractable problems such as allowing free speech <BR>while
<BR> disallowing a call of ``Fire!'' in a crowded theater. It will not be
<BR> solved in the space of this HOWTO.
<BR>
<BR> So only you can decide where the compromise will be. I will try to
<BR> instruct you in the use of some of the tools available and some
<BR> vulnerabilities to be aware of, in the hope that you will use them for
<BR> good, and not evil purposes. Another equivalent problem.
<BR>
<BR> (C) 2000 Paul `Rusty' Russell. Licenced under the GNU GPL.
<BR>
<BR> ----------------------------------------------------------------------
<BR>
<BR> Next Previous Contents
<BR>
<BR> <BR>-- <BR>))))))))))))))))))))))))))))))))))))))))))))))))))) <BR> ((((((((((((生命的欢喜可以再影印一张吗?(((((((((((( <BR> ))))))))))))老去的热情可以再拉皮整形吗?)))))))))))) <BR> ((((((((((((病中的真理可以再传真校对吗?(((((((((((( <BR> ))))))))))))死掉的爱情可以再输入键出吗?)))))))))))) <BR> ((((((((((((((((((((((((((((((((((((((((((((((((((( <BR> <BR>※ 来源:·BBS 水木清华站 smth.org·[FROM: 202.112.45.49] <BR><CENTER><H1>BBS水木清华站∶精华区</H1></CENTER></BODY></HTML>
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