<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">I will try soon. It sounds reasonable.<br><br><div><br></div><div><br>On Mar 19, 2018, at 5:34 PM, Zhengkai Wei <<a href="mailto:zwei11@stevens.edu">zwei11@stevens.edu</a>> wrote:<br><br></div><blockquote type="cite"><div><meta http-equiv="Content-Type" content="text/html charset=gb2312">Did you delete the line "domain ec2.internal” ,"search ec2.internal” on you client instance? <div class="">If you using DNS server public IP . One line enough “name server 51.51.51.51"<div class=""><br class=""></div><div class=""><div><blockquote type="cite" class=""><div class="">在 2018年3月19日，下午5:09，Yifang Yuan <<a href="mailto:yyuan17@stevens.edu" class="">yyuan17@stevens.edu</a>> 写道：</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="Content-Type" content="text/html; charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Hi All:<div class="">Does anyone set client name-server to DNS server’s public IP? My client works with DNS server’s private address, but not public.</div><div class=""><br class=""></div><div class="">Let me specific:</div><div class="">1 My DNS server(AWS) private ip is 172.31.33.1 and public is 51.51.51.51. </div><div class="">2 My DNS client(AWS)’s name-server is set to 172.31.33.1. Client could resolve domain name.</div><div class="">3 My DNS client(AWS)’s name-server is set to 51.51.51.51. <u class=""><b class="">Client can’t resolve domain name.</b></u></div><div class="">4 My Macbook’s name-server is set to 51.51.51.51. My laptop could resolve domain name.</div><div class=""><br class=""></div><div class="">Name-sever is set in /etc/resolv.conf. I use dig to confirm the configuration is loaded.</div><div class="">Because the dns public ip works on my laptop, I suppose AWS limit the access from inside to themselves public address. Is it true? Thank you.</div><div class=""><br class=""></div><div class="">Yifang</div><div class=""><br class=""><div class=""><br class=""></div></div></div>_______________________________________________<br class="">cs615asa mailing list<br class=""><a href="mailto:cs615asa@lists.stevens.edu" class="">cs615asa@lists.stevens.edu</a><br class=""><a href="https://lists.stevens.edu/mailman/listinfo/cs615asa">https://lists.stevens.edu/mailman/listinfo/cs615asa</a><br class=""></div></blockquote></div><br class=""></div></div></div></blockquote><blockquote type="cite"><div><span>_______________________________________________</span><br><span>cs615asa mailing list</span><br><span><a href="mailto:cs615asa@lists.stevens.edu">cs615asa@lists.stevens.edu</a></span><br><span><a href="https://lists.stevens.edu/mailman/listinfo/cs615asa">https://lists.stevens.edu/mailman/listinfo/cs615asa</a></span><br></div></blockquote></body></html>