<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:10pt"><div id="yiv1517272667"><div><div style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:10pt;"><div class="yiv1517272667" id="yiv1517272667yui_3_16_0_9_1407424415372_4" style=""><span class="yiv1517272667" id="yiv1517272667yui_3_16_0_9_1407424415372_19" style="">Hello,</span></div><div class="yiv1517272667" id="yiv1517272667yui_3_16_0_9_1407424415372_21" style="color:rgb(0, 0, 0);font-size:13.3333px;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;background-color:transparent;font-style:normal;"><span class="yiv1517272667" id="yiv1517272667yui_3_16_0_9_1407424415372_19" style="">This is the last email. I finally solved it by adding the udp ports tot he firewall as stated by
Phil.</span></div><div class="yiv1517272667" id="yiv1517272667yui_3_16_0_9_1407424415372_26" style="color:rgb(0, 0, 0);font-size:13.3333px;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;background-color:transparent;font-style:normal;"><br style="" clear="none"><span class="yiv1517272667" id="yiv1517272667yui_3_16_0_9_1407424415372_19" style=""></span></div><div class="yiv1517272667" id="yiv1517272667yui_3_16_0_9_1407424415372_29" style="color:rgb(0, 0, 0);font-size:13.3333px;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;background-color:transparent;font-style:normal;"><span class="yiv1517272667" id="yiv1517272667yui_3_16_0_9_1407424415372_19" style="">The task is done by adding the following lines into /etc/sysconfig/iptables</span></div><div class="yiv1517272667" id="yiv1517272667yui_3_16_0_9_1407424415372_36" style="color:rgb(0, 0,
0);font-size:13.3333px;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;background-color:transparent;font-style:normal;"><span class="yiv1517272667" id="yiv1517272667yui_3_16_0_9_1407424415372_19" style=""><br clear="none"></span></div><div class="yiv1517272667" id="yiv1517272667yui_3_16_0_9_1407424415372_33" style="color:rgb(0, 0, 0);font-size:13.3333px;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;background-color:transparent;font-style:normal;"><span class="yiv1517272667" id="yiv1517272667yui_3_16_0_9_1407424415372_19" style="">-A INPUT -m state --state NEW -p udp --dport 69 -j ACCEPT<br class="yiv1517272667" style="" clear="none">-A INPUT -m state --state NEW -p udp --dport 67 -j ACCEPT<br class="yiv1517272667" style="" clear="none"><br class="yiv1517272667" id="yiv1517272667yui_3_16_0_1_1407424415372_13109" style="" clear="none"><br>and then restarting the iptables
service.<br><br>Thank you very much for help.<br></span></div><div class="yiv1517272667" id="yiv1517272667yui_3_16_0_9_1407424415372_17" style="">Regards,<br class="yiv1517272667" id="yiv1517272667yui_3_16_0_9_1407424415372_9" style="" clear="none">Mahmood </div><div class="qtdSeparateBR"><br><br></div><div class="yiv1517272667yqt4809830428" id="yiv1517272667yqt77589"><div class="yiv1517272667yahoo_quoted" id="yiv1517272667yui_3_16_0_9_1407424415372_12" style="display: block;"> <div class="yiv1517272667" style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:10pt;"> <div class="yiv1517272667" style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12pt;"> <div class="yiv1517272667" dir="ltr" style=""> <font class="yiv1517272667" style="" face="Arial" size="2"> On Wednesday,
August 6, 2014 2:18 PM, Phil Mayers <p.mayers@imperial.ac.uk> wrote:<br class="yiv1517272667" style="" clear="none"> </font> </div> <br class="yiv1517272667" style="" clear="none"><br class="yiv1517272667" style="" clear="none"> <div class="yiv1517272667" style="">On 06/08/14 09:10, Mahmood N wrote:<div class="yiv1517272667" id="yiv1517272667yqtfd69557" style=""><br class="yiv1517272667" style="" clear="none"><br class="yiv1517272667" style="" clear="none">> # iptables -t filter -L -v -n<br class="yiv1517272667" style="" clear="none">> Chain INPUT (policy ACCEPT 0 packets, 0 bytes)<br class="yiv1517272667" style="" clear="none">> 24 6006 REJECT all -- * * 0.0.0.0/0</div><br class="yiv1517272667" style="" clear="none"><br class="yiv1517272667" style="" clear="none">Surely this is the problem? This
iptables rule permits established, <br class="yiv1517272667" style="" clear="none">ICMP, loopback then TCP, but nothing for UDP. The only reason DHCP is <br class="yiv1517272667" style="" clear="none">working is that dhcpd
uses raw sockets.<br class="yiv1517272667" style="" clear="none"><br class="yiv1517272667" style="" clear="none">Remove or fix your iptables rules, I think.<br class="yiv1517272667" style="" clear="none">_______________________________________________<br class="yiv1517272667" style="" clear="none">dhcp-users mailing list<br class="yiv1517272667" style="" clear="none"><a rel="nofollow" shape="rect" class="yiv1517272667" style="" ymailto="mailto:dhcp-users@lists.isc.org" target="_blank" href="mailto:dhcp-users@lists.isc.org">dhcp-users@lists.isc.org</a><br class="yiv1517272667" style="" clear="none"><a rel="nofollow" shape="rect" class="yiv1517272667" style="" target="_blank" href="https://lists.isc.org/mailman/listinfo/dhcp-users">https://lists.isc.org/mailman/listinfo/dhcp-users</a><div class="yiv1517272667" id="yiv1517272667yqtfd86112" style=""><br class="yiv1517272667" style="" clear="none"></div><br class="yiv1517272667" style="" clear="none"><br
class="yiv1517272667" style="" clear="none"></div> </div> </div> </div></div> </div></div></div></div></body></html>