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	<title>Pingvinsimogató.hu &#187; szkript</title>
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		<title>Veszélyes országok forgalmának blokkolása iptables-szel</title>
		<link>http://pingvinsimogato.hu/szkript/veszelyes-orszagok-forgalmanak-blokkolasa-iptables-szel/</link>
		<comments>http://pingvinsimogato.hu/szkript/veszelyes-orszagok-forgalmanak-blokkolasa-iptables-szel/#comments</comments>
		<pubDate>Sat, 09 Oct 2010 22:14:47 +0000</pubDate>
		<dc:creator>Német Krisztián</dc:creator>
				<category><![CDATA[biztonság]]></category>
		<category><![CDATA[szkript]]></category>
		<category><![CDATA[bash szkript]]></category>
		<category><![CDATA[iptables]]></category>

		<guid isPermaLink="false">http://pingvinsimogato.hu/?p=166</guid>
		<description><![CDATA[#!/bin/bash ### Összes forgalom blokkolása Afganisztánból (af) és Kínából (CN). ### ISO=&#34;af cn&#34; ### Útvonalak beállítása### IPT=/sbin/iptables WGET=/usr/bin/wget EGREP=/bin/egrep ### Az alábbiakat ne szerkeszd!###&#60;span id=&#34;more-166&#34;&#62;&#60;/span&#62; SPAMLIST=&#34;countrydrop&#34; ZONEROOT=&#34;/root/iptables&#34; DLROOT=&#34;http://www.ipdeny.com/ipblocks/data/countries&#34; cleanOldRules&#40;&#41;&#123; $IPT -F $IPT -X $IPT -t nat -F $IPT -t nat -X $IPT -t mangle -F $IPT -t mangle -X $IPT -P INPUT ACCEPT $IPT -P [...]]]></description>
			<content:encoded><![CDATA[<p></p>
<div class="wp_syntax"><div class="code"><pre class="bash" style="font-family:monospace;"><span style="color: #666666; font-style: italic;">#!/bin/bash</span>
<span style="color: #666666; font-style: italic;">### Összes forgalom blokkolása Afganisztánból (af) és Kínából (CN). ###</span>
<span style="color: #007800;">ISO</span>=<span style="color: #ff0000;">&quot;af cn&quot;</span>
<span style="color: #666666; font-style: italic;">### Útvonalak beállítása###</span>
<span style="color: #007800;">IPT</span>=<span style="color: #000000; font-weight: bold;">/</span>sbin<span style="color: #000000; font-weight: bold;">/</span>iptables
<span style="color: #007800;">WGET</span>=<span style="color: #000000; font-weight: bold;">/</span>usr<span style="color: #000000; font-weight: bold;">/</span>bin<span style="color: #000000; font-weight: bold;">/</span><span style="color: #c20cb9; font-weight: bold;">wget</span>
<span style="color: #007800;">EGREP</span>=<span style="color: #000000; font-weight: bold;">/</span>bin<span style="color: #000000; font-weight: bold;">/</span><span style="color: #c20cb9; font-weight: bold;">egrep</span>
<span style="color: #666666; font-style: italic;">### Az alábbiakat ne szerkeszd!###&lt;span id=&quot;more-166&quot;&gt;&lt;/span&gt;</span>
<span style="color: #007800;">SPAMLIST</span>=<span style="color: #ff0000;">&quot;countrydrop&quot;</span>
<span style="color: #007800;">ZONEROOT</span>=<span style="color: #ff0000;">&quot;/root/iptables&quot;</span>
<span style="color: #007800;">DLROOT</span>=<span style="color: #ff0000;">&quot;http://www.ipdeny.com/ipblocks/data/countries&quot;</span>
cleanOldRules<span style="color: #7a0874; font-weight: bold;">&#40;</span><span style="color: #7a0874; font-weight: bold;">&#41;</span><span style="color: #7a0874; font-weight: bold;">&#123;</span>
<span style="color: #007800;">$IPT</span> <span style="color: #660033;">-F</span>
<span style="color: #007800;">$IPT</span> <span style="color: #660033;">-X</span>
<span style="color: #007800;">$IPT</span> <span style="color: #660033;">-t</span> nat <span style="color: #660033;">-F</span>
<span style="color: #007800;">$IPT</span> <span style="color: #660033;">-t</span> nat <span style="color: #660033;">-X</span>
<span style="color: #007800;">$IPT</span> <span style="color: #660033;">-t</span> mangle <span style="color: #660033;">-F</span>
<span style="color: #007800;">$IPT</span> <span style="color: #660033;">-t</span> mangle <span style="color: #660033;">-X</span>
<span style="color: #007800;">$IPT</span> <span style="color: #660033;">-P</span> INPUT ACCEPT
<span style="color: #007800;">$IPT</span> <span style="color: #660033;">-P</span> OUTPUT ACCEPT
<span style="color: #007800;">$IPT</span> <span style="color: #660033;">-P</span> FORWARD ACCEPT
<span style="color: #7a0874; font-weight: bold;">&#125;</span>
<span style="color: #666666; font-style: italic;"># könyvtár létrehozása</span>
<span style="color: #7a0874; font-weight: bold;">&#91;</span> <span style="color: #000000; font-weight: bold;">!</span> <span style="color: #660033;">-d</span> <span style="color: #007800;">$ZONEROOT</span> <span style="color: #7a0874; font-weight: bold;">&#93;</span> <span style="color: #000000; font-weight: bold;">&amp;&amp;</span> <span style="color: #000000; font-weight: bold;">/</span>bin<span style="color: #000000; font-weight: bold;">/</span><span style="color: #c20cb9; font-weight: bold;">mkdir</span> <span style="color: #660033;">-p</span> <span style="color: #007800;">$ZONEROOT</span>
<span style="color: #666666; font-style: italic;"># régi szabályok törlése</span>
cleanOldRules
<span style="color: #666666; font-style: italic;"># új iptables lista létrehozása</span>
<span style="color: #007800;">$IPT</span> <span style="color: #660033;">-N</span> <span style="color: #007800;">$SPAMLIST</span>
<span style="color: #000000; font-weight: bold;">for</span> c  <span style="color: #000000; font-weight: bold;">in</span> <span style="color: #007800;">$ISO</span>
<span style="color: #000000; font-weight: bold;">do</span>
<span style="color: #666666; font-style: italic;"># local zóna fájl</span>
      <span style="color: #007800;">tDB</span>=<span style="color: #007800;">$ZONEROOT</span><span style="color: #000000; font-weight: bold;">/</span><span style="color: #007800;">$c</span>.zone
      <span style="color: #666666; font-style: italic;"># zónafájl letöltése</span>
      <span style="color: #007800;">$WGET</span> <span style="color: #660033;">-O</span> <span style="color: #007800;">$tDB</span> <span style="color: #007800;">$DLROOT</span><span style="color: #000000; font-weight: bold;">/</span><span style="color: #007800;">$c</span>.zone
      <span style="color: #666666; font-style: italic;"># országspecifikus log üzenet</span>
      <span style="color: #007800;">SPAMDROPMSG</span>=<span style="color: #ff0000;">&quot;<span style="color: #007800;">$c</span> Country Drop&quot;</span>
      <span style="color: #666666; font-style: italic;"># illesztés\r\n      BADIPS=$(egrep -v &quot;^#|^$&quot; $tDB)</span>
      <span style="color: #000000; font-weight: bold;">for</span> ipblock <span style="color: #000000; font-weight: bold;">in</span> <span style="color: #007800;">$BADIPS</span>
      <span style="color: #000000; font-weight: bold;">do</span>
      <span style="color: #007800;">$IPT</span> <span style="color: #660033;">-A</span> <span style="color: #007800;">$SPAMLIST</span> <span style="color: #660033;">-s</span> <span style="color: #007800;">$ipblock</span> <span style="color: #660033;">-j</span> LOG <span style="color: #660033;">--log-prefix</span> <span style="color: #ff0000;">&quot;<span style="color: #007800;">$SPAMDROPMSG</span>&quot;</span>
      <span style="color: #007800;">$IPT</span> <span style="color: #660033;">-A</span> <span style="color: #007800;">$SPAMLIST</span> <span style="color: #660033;">-s</span> <span style="color: #007800;">$ipblock</span> <span style="color: #660033;">-j</span> DROP
      <span style="color: #000000; font-weight: bold;">done</span>
<span style="color: #000000; font-weight: bold;">done</span>
<span style="color: #666666; font-style: italic;"># Mindent eldob</span>
<span style="color: #007800;">$IPT</span> <span style="color: #660033;">-I</span> INPUT <span style="color: #660033;">-j</span> <span style="color: #007800;">$SPAMLIST</span>
<span style="color: #007800;">$IPT</span> <span style="color: #660033;">-I</span> OUTPUT <span style="color: #660033;">-j</span> <span style="color: #007800;">$SPAMLIST</span>
<span style="color: #007800;">$IPT</span> <span style="color: #660033;">-I</span> FORWARD <span style="color: #660033;">-j</span> <span style="color: #007800;">$SPAMLIST</span>
<span style="color: #666666; font-style: italic;"># egyéb iptables szkript hívása</span>
<span style="color: #666666; font-style: italic;"># /path/to/other/iptables.sh</span>
<span style="color: #7a0874; font-weight: bold;">exit</span> <span style="color: #000000;">0</span></pre></div></div>

<p>Elmentve egy fájlba a fenti sorokat crontab-ba billeszthetjük, hogy hetente fusson meg:</p>
<pre>@weekly /path/to/country.block.iptables.sh</pre>
]]></content:encoded>
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		</item>
		<item>
		<title>Tűzfalszkript 1.</title>
		<link>http://pingvinsimogato.hu/szkript/tuzfalszkript-1/</link>
		<comments>http://pingvinsimogato.hu/szkript/tuzfalszkript-1/#comments</comments>
		<pubDate>Mon, 16 Aug 2010 11:26:08 +0000</pubDate>
		<dc:creator>Német Krisztián</dc:creator>
				<category><![CDATA[biztonság]]></category>
		<category><![CDATA[szkript]]></category>
		<category><![CDATA[bash szkript]]></category>
		<category><![CDATA[iptables]]></category>
		<category><![CDATA[tűzfal]]></category>

		<guid isPermaLink="false">http://pingvinsimogato.hu/?p=127</guid>
		<description><![CDATA[#!/bin/bash &#160; echo 1 &#62; /proc/sys/net/ipv4/ip_forward &#160; ## Az eddigi szabályok törlése iptables -F INPUT iptables -F OUTPUT iptables -F FORWARD &#60;span id=&#34;more-127&#34;&#62;&#60;/span&#62; ## Az alap szabályok felállítása iptables -P INPUT ACCEPT iptables -P OUTPUT ACCEPT iptables -P FORWARD ACCEPT &#160; ## LOGDROP szabály iptables -F LOGDROP 2&#62;/dev/null iptables -X LOGDROP 2&#62;/dev/null iptables -N LOGDROP [...]]]></description>
			<content:encoded><![CDATA[<p></p>
<div class="wp_syntax"><div class="code"><pre class="bash" style="font-family:monospace;"><span style="color: #666666; font-style: italic;">#!/bin/bash</span>
&nbsp;
<span style="color: #7a0874; font-weight: bold;">echo</span> <span style="color: #000000;">1</span> <span style="color: #000000; font-weight: bold;">&gt;</span> <span style="color: #000000; font-weight: bold;">/</span>proc<span style="color: #000000; font-weight: bold;">/</span>sys<span style="color: #000000; font-weight: bold;">/</span>net<span style="color: #000000; font-weight: bold;">/</span>ipv4<span style="color: #000000; font-weight: bold;">/</span>ip_forward
&nbsp;
<span style="color: #666666; font-style: italic;">## Az eddigi szabályok törlése</span>
iptables <span style="color: #660033;">-F</span> INPUT
iptables <span style="color: #660033;">-F</span> OUTPUT
iptables <span style="color: #660033;">-F</span> FORWARD
<span style="color: #000000; font-weight: bold;">&lt;</span>span <span style="color: #007800;">id</span>=<span style="color: #ff0000;">&quot;more-127&quot;</span><span style="color: #000000; font-weight: bold;">&gt;&lt;/</span>span<span style="color: #000000; font-weight: bold;">&gt;</span>
<span style="color: #666666; font-style: italic;">## Az alap szabályok felállítása</span>
iptables <span style="color: #660033;">-P</span> INPUT ACCEPT
iptables <span style="color: #660033;">-P</span> OUTPUT ACCEPT
iptables <span style="color: #660033;">-P</span> FORWARD ACCEPT
&nbsp;
<span style="color: #666666; font-style: italic;">## LOGDROP szabály</span>
iptables <span style="color: #660033;">-F</span> LOGDROP <span style="color: #000000;">2</span><span style="color: #000000; font-weight: bold;">&gt;/</span>dev<span style="color: #000000; font-weight: bold;">/</span>null
iptables <span style="color: #660033;">-X</span> LOGDROP <span style="color: #000000;">2</span><span style="color: #000000; font-weight: bold;">&gt;/</span>dev<span style="color: #000000; font-weight: bold;">/</span>null
iptables <span style="color: #660033;">-N</span> LOGDROP
iptables <span style="color: #660033;">-A</span> LOGDROP <span style="color: #660033;">-j</span> LOG
iptables <span style="color: #660033;">-A</span> LOGDROP <span style="color: #660033;">-j</span> DROP
&nbsp;
<span style="color: #666666; font-style: italic;">## Maszkolás</span>
iptables <span style="color: #660033;">-t</span> nat <span style="color: #660033;">-F</span> PREROUTING
iptables <span style="color: #660033;">-t</span> nat <span style="color: #660033;">-F</span> POSTROUTING
iptables <span style="color: #660033;">-t</span> nat <span style="color: #660033;">-P</span> PREROUTING ACCEPT
iptables <span style="color: #660033;">-t</span> nat <span style="color: #660033;">-P</span> POSTROUTING ACCEPT
iptables <span style="color: #660033;">-t</span> nat <span style="color: #660033;">-A</span> POSTROUTING <span style="color: #660033;">-s</span> 192.168.1.0<span style="color: #000000; font-weight: bold;">/</span><span style="color: #000000;">24</span> <span style="color: #660033;">-j</span> SNAT <span style="color: #660033;">--to</span> 64.81.39.24
&nbsp;
&nbsp;
<span style="color: #666666; font-style: italic;">## Tűzfal szabályok felállítása</span>
&nbsp;
&nbsp;
iptables <span style="color: #660033;">-A</span> INPUT <span style="color: #660033;">-i</span> eth0 <span style="color: #660033;">-m</span> state <span style="color: #660033;">--state</span> ESTABLISHED,RELATED <span style="color: #660033;">-j</span> ACCEPT
&nbsp;
<span style="color: #666666; font-style: italic;">#* FTP, SSH, Telnet Portok megnyitása</span>
iptables <span style="color: #660033;">-A</span> INPUT <span style="color: #660033;">--proto</span> tcp <span style="color: #660033;">-i</span> eth0 <span style="color: #660033;">--destination-port</span> <span style="color: #000000;">20</span>:<span style="color: #000000;">23</span> <span style="color: #660033;">-j</span> ACCEPT
&nbsp;
<span style="color: #666666; font-style: italic;">#* Mail Portok megnyitása</span>
iptables <span style="color: #660033;">-A</span> INPUT <span style="color: #660033;">--proto</span> tcp <span style="color: #660033;">-i</span> eth0 <span style="color: #660033;">--destination-port</span> <span style="color: #000000;">25</span> <span style="color: #660033;">-j</span> ACCEPT
iptables <span style="color: #660033;">-A</span> INPUT <span style="color: #660033;">--proto</span> tcp <span style="color: #660033;">-i</span> eth0 <span style="color: #660033;">--destination-port</span> <span style="color: #000000;">110</span> <span style="color: #660033;">-j</span> ACCEPT
&nbsp;
<span style="color: #666666; font-style: italic;">#* HTTP &amp; HTTPS Portok megnyitása</span>
iptables <span style="color: #660033;">-A</span> INPUT <span style="color: #660033;">--proto</span> tcp <span style="color: #660033;">-i</span> eth0 <span style="color: #660033;">--destination-port</span> <span style="color: #000000;">80</span> <span style="color: #660033;">-j</span> ACCEPT
iptables <span style="color: #660033;">-A</span> INPUT <span style="color: #660033;">--proto</span> tcp <span style="color: #660033;">-i</span> eth0 <span style="color: #660033;">--destination-port</span> <span style="color: #000000;">443</span> <span style="color: #660033;">-j</span> ACCEPT
&nbsp;
<span style="color: #666666; font-style: italic;">#* IDENTD Port megnyitása</span>
iptables <span style="color: #660033;">-A</span> INPUT <span style="color: #660033;">--proto</span> tcp <span style="color: #660033;">-i</span> eth0 <span style="color: #660033;">--destination-port</span> <span style="color: #000000;">113</span> <span style="color: #660033;">-j</span> ACCEPT
&nbsp;
<span style="color: #666666; font-style: italic;">#* User Portok megnyitása</span>
iptables <span style="color: #660033;">-A</span> INPUT <span style="color: #660033;">--proto</span> tcp <span style="color: #660033;">-i</span> eth0 <span style="color: #660033;">--destination-port</span> <span style="color: #000000;">1024</span>:<span style="color: #000000;">65535</span> <span style="color: #660033;">-j</span> ACCEPT
iptables <span style="color: #660033;">-A</span> INPUT <span style="color: #660033;">--proto</span> udp <span style="color: #660033;">-i</span> eth0 <span style="color: #660033;">--destination-port</span> <span style="color: #000000;">1024</span>:<span style="color: #000000;">65535</span> <span style="color: #660033;">-j</span> ACCEPT
&nbsp;
<span style="color: #666666; font-style: italic;">#* DNS</span>
iptables <span style="color: #660033;">-A</span> INPUT <span style="color: #660033;">--proto</span> tcp <span style="color: #660033;">-i</span> eth0 <span style="color: #660033;">--destination-port</span> <span style="color: #000000;">53</span> <span style="color: #660033;">-j</span> ACCEPT
iptables <span style="color: #660033;">-A</span> INPUT <span style="color: #660033;">--proto</span> udp <span style="color: #660033;">-i</span> eth0 <span style="color: #660033;">--destination-port</span> <span style="color: #000000;">53</span> <span style="color: #660033;">-j</span> ACCEPT
iptables <span style="color: #660033;">-A</span> INPUT <span style="color: #660033;">--proto</span> tcp <span style="color: #660033;">-i</span> eth0 <span style="color: #660033;">--destination-port</span> <span style="color: #000000;">137</span>:<span style="color: #000000;">138</span> <span style="color: #660033;">-j</span> ACCEPT
iptables <span style="color: #660033;">-A</span> INPUT <span style="color: #660033;">--proto</span> udp <span style="color: #660033;">-i</span> eth0 <span style="color: #660033;">--destination-port</span> <span style="color: #000000;">137</span>:<span style="color: #000000;">138</span> <span style="color: #660033;">-j</span> ACCEPT
&nbsp;
<span style="color: #666666; font-style: italic;">#* Talk Port</span>
iptables <span style="color: #660033;">-A</span> INPUT <span style="color: #660033;">--proto</span> udp <span style="color: #660033;">-i</span> eth0 <span style="color: #660033;">--destination-port</span> <span style="color: #000000;">517</span>:<span style="color: #000000;">518</span> <span style="color: #660033;">-j</span> ACCEPT
&nbsp;
<span style="color: #666666; font-style: italic;">#* ICMP Replies</span>
iptables <span style="color: #660033;">-A</span> INPUT <span style="color: #660033;">-i</span> eth0 <span style="color: #660033;">--proto</span> icmp <span style="color: #660033;">--jump</span> ACCEPT
&nbsp;
iptables <span style="color: #660033;">-A</span> OUTPUT <span style="color: #660033;">--proto</span> tcp <span style="color: #660033;">--destination-port</span> <span style="color: #000000;">2611</span> <span style="color: #660033;">-j</span> LOGDROP
&nbsp;
<span style="color: #666666; font-style: italic;">#* Az összes többi port tiltása</span>
iptables <span style="color: #660033;">-A</span> INPUT <span style="color: #660033;">-i</span> eth0 <span style="color: #660033;">-j</span> LOGDROP
&nbsp;
<span style="color: #666666; font-style: italic;">## Port Forwarding For NAT</span>
&nbsp;
<span style="color: #666666; font-style: italic;">#* ICQ portjainak engedélyezése</span>
iptables <span style="color: #660033;">-A</span> PREROUTING <span style="color: #660033;">-t</span> nat <span style="color: #660033;">-p</span> udp <span style="color: #660033;">-d</span> 64.81.39.24 <span style="color: #660033;">--dport</span> <span style="color: #000000;">4000</span> <span style="color: #660033;">-j</span> DNAT <span style="color: #660033;">--to</span> 192.168.1.2
iptables <span style="color: #660033;">-A</span> PREROUTING <span style="color: #660033;">-t</span> nat <span style="color: #660033;">-p</span> tcp <span style="color: #660033;">-d</span> 64.81.39.24 <span style="color: #660033;">--dport</span> <span style="color: #000000;">20020</span>:<span style="color: #000000;">20039</span> <span style="color: #660033;">-j</span> DNAT <span style="color: #660033;">--to</span> 192.168.1.2
&nbsp;
<span style="color: #666666; font-style: italic;">#* WebCam Software portjainak engedélyezése</span>
iptables <span style="color: #660033;">-A</span> PREROUTING <span style="color: #660033;">-t</span> nat <span style="color: #660033;">-p</span> tcp <span style="color: #660033;">-d</span> 64.81.39.24 <span style="color: #660033;">--dport</span> <span style="color: #000000;">2047</span>:<span style="color: #000000;">2048</span> <span style="color: #660033;">-j</span> DNAT <span style="color: #660033;">--to</span> 192.168.1.1
iptables <span style="color: #660033;">-A</span> PREROUTING <span style="color: #660033;">-t</span> nat <span style="color: #660033;">-p</span> udp <span style="color: #660033;">-d</span> 64.81.39.24 <span style="color: #660033;">--dport</span> <span style="color: #000000;">2047</span>:<span style="color: #000000;">2048</span> <span style="color: #660033;">-j</span> DNAT <span style="color: #660033;">--to</span> 192.168.1.1
iptables <span style="color: #660033;">-A</span> PREROUTING <span style="color: #660033;">-t</span> nat <span style="color: #660033;">-p</span> udp <span style="color: #660033;">-d</span> 64.81.39.24 <span style="color: #660033;">--dport</span> <span style="color: #000000;">1972</span> <span style="color: #660033;">-j</span> DNAT <span style="color: #660033;">--to</span> 192.168.1.1
&nbsp;
<span style="color: #666666; font-style: italic;"># Unreal Tournament portjainak engedélyezése</span>
iptables <span style="color: #660033;">-A</span> PREROUTING <span style="color: #660033;">-t</span> nat <span style="color: #660033;">-p</span> tcp <span style="color: #660033;">-d</span> 64.81.39.24 <span style="color: #660033;">--dport</span> <span style="color: #000000;">7600</span>:<span style="color: #000000;">7900</span> <span style="color: #660033;">-j</span> DNAT <span style="color: #660033;">--to</span> 192.168.1.1
iptables <span style="color: #660033;">-A</span> PREROUTING <span style="color: #660033;">-t</span> nat <span style="color: #660033;">-p</span> udp <span style="color: #660033;">-d</span> 64.81.39.24 <span style="color: #660033;">--dport</span> <span style="color: #000000;">7600</span>:<span style="color: #000000;">7900</span> <span style="color: #660033;">-j</span> DNAT <span style="color: #660033;">--to</span> 192.168.1.1
&nbsp;
iptables <span style="color: #660033;">-A</span> PREROUTING <span style="color: #660033;">-t</span> nat <span style="color: #660033;">-p</span> udp <span style="color: #660033;">-d</span> 64.81.39.24 <span style="color: #660033;">--dport</span> <span style="color: #000000;">3782</span> <span style="color: #660033;">-j</span> DNAT <span style="color: #660033;">--to</span> 192.168.1.2</pre></div></div>

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