https://kb.rvmgroup.it/index.php?action=history&feed=atom&title=Redirezione_del_traffico_su_un_host_interno 2026-05-05T22:36:25Z Revision history for this page on the wiki MediaWiki 1.44.2 https://kb.rvmgroup.it/index.php?title=Redirezione_del_traffico_su_un_host_interno&diff=11046&oldid=prev 2023-12-05T15:37:30Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 15:37, 5 December 2023</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">Altrimenti detta '''NAT REFLECTION'''</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Situazione:</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Situazione:</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> </table>

Gabriele.vivinetto https://kb.rvmgroup.it/index.php?title=Redirezione_del_traffico_su_un_host_interno&diff=3450&oldid=prev 2005-05-18T14:52:45Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 14:52, 18 May 2005</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l41">Line 41:</td> <td colspan="2" class="diff-lineno">Line 41:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>E&#039; la seconda regola che è importante.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>E&#039; la seconda regola che è importante.</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">Vedi http://www.skullkrusher.net/linux/iptables.html Caso 4.</ins></div></td></tr> </table>

Gabriele.vivinetto https://kb.rvmgroup.it/index.php?title=Redirezione_del_traffico_su_un_host_interno&diff=26&oldid=prev 2005-05-18T14:50:35Z

<p></p> <p><b>New page</b></p><div>Situazione:<br /> <br /> +--------+192.168.253.253 #####<br /> |Firewall| +------+ ## ##<br /> | Linux |_________________|Router|_________#Internet#<br /> +----|---+ 192.168.253.254+------+ 1.2.3.4 ## ##<br /> | #####<br /> |192.168.254.254<br /> |<br /> |<br /> ___________________________<br /> | |<br /> | |<br /> |192.168.254.100 |192.168.254.18<br /> +|----------+ +|-----+<br /> |Mail Server| |Client|<br /> +-----------+ +------+<br /> <br /> fire.domain.tld=1.2.3.4<br /> <br /> Se si vuole accedere dal client in ssh al firewall usando &#039;ssh fire.domain.tld&#039;:<br /> <br /> $IPT -t nat -A PREROUTING -s 192.168.254.0/24 --dst 1.2.3.4 \<br /> -p tcp --dport 22 -j DNAT \<br /> --to-destination 192.168.254.254:22<br /> # tutto ciò che entra nel firewall destinato all&#039;ip pubblico del router porta <br /> # 22 viene girato al fw stesso.<br /> <br /> Se si vuole accedere dal client Lan al Mailserver usando &#039;telnet fire.domain.tld 25&#039;<br /> <br /> $IPT -t nat -A PREROUTING -s 192.168.254.0/24 --dst 1.2.3.4 \<br /> -p tcp --dport 25 -j DNAT \<br /> --to-destination 192.168.254.100:25<br /> # tutto ciò che entra nel firewall destinato all&#039;ip pubblico del router porta 25 <br /> # viene girato al mailserver interno.<br /> <br /> $IPT -t nat -A POSTROUTING -s 192.168.254.0/24 -d 192.168.254.100 \<br /> -p tcp --dport 25 -j SNAT --to-source 192.168.254.254<br /> # tutto ciò che arriva nel router destinato al mailserver viene marcato come <br /> # proveniente dal firewall, per &quot;imbrogliare la risposta dal mailserver al client&quot;<br /> <br /> E&#039; la seconda regola che è importante.</div>

Gabriele.vivinetto