<div dir="ltr"><br><div class="gmail_extra"><br><br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000099"><font size="-1"><font face="Helvetica, Arial, sans-serif"><font size="-1"><font size="-1"><font size="-1"><font size="-1"><font size="-1"><font size="-1"><font size="-1"><font size="-1"><font size="-1"><br>

                          <font size="-1"><font size="-1">In iptables
                              configuration I have:<br>
                              <br>
                              -A INPUT -p icmp -s <font size="-1">111.<font size="-1">111.111.111</font></font> -j
                              ACCEPT (my <font size="-1">home)</font><br>
                              -A INPUT -p icmp -s <font size="-1">222.222.222.222</font>
                              -j ACCEPT (my office)<br>
                              <br>
                              <font size="-1">also commenting <font size="-1"><font size="-1">on all</font>
                                  l<font size="-1">ines<font size="-1">
                                      (#), the result <font size="-1">do<font size="-1">es n<font size="-1">ot
                                            change<br>
                                            <br>
                                            <font size="-1">at <font size="-1">righ<font size="-1">t time, <font size="-1">I have
                                                    commented all<font size="-1"> line<font size="-1">s (#)
                                                        in sys<font size="-1">ctl
                                                          but result
                                                          does not
                                                          change<br>
                                                          <font size="-1">in
                                                          conso<font size="-1">le,
                                                          <font size="-1">after
                                                          <font size="-1">the
                                                          change, I
                                                          gave:<br>
                                                          <br>
                                                          <font size="-1"># <font size="-1">s<font size="-1">udo
                                                          sysctl -p<br>
                                                          <br>
                                                          <font size="-1">where
                                                          <font size="-1">is
                                                          the<font size="-1">
                                                          problem<font size="-1">?<br>
                                                          <font size="-1">thanks
                                                          in advance</font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></div>
</blockquote><div><br></div><div>Hi,</div><div><br></div><div>Set the following parameters in /etc/sysctl.conf (if this is related to sysctl.conf)</div><div><br></div><div><p style="margin:0px;font-size:11px;font-family:Menlo">
net.ipv4.icmp_echo_ignore_broadcasts = 0 </p>
<p style="margin:0px;font-size:11px;font-family:Menlo">net.ipv4.icmp_echo_ignore_all = 0</p></div><div><br></div><div>--</div><div>Eero</div></div></div></div>