https://ykyi.net/tags/traceroute/ Recent content in Traceroute on kamuszhou's blog Hugo zh-cn Wed, 20 Jun 2012 14:37:16 +0000 https://ykyi.net/?p=751/ Wed, 20 Jun 2012 14:37:16 +0000 https://ykyi.net/?p=751/ <p><span style="font-family:lucida sans unicode,lucida grande,sans-serif;"><span style="font-size: 16px; ">Today, I ran the traceroute program on a machine running FreeBSD. It failed once and again.</span></span></p> <p><span style="font-family:lucida sans unicode,lucida grande,sans-serif;"><span style="font-size: 16px; ">Traceroute complained:</span></span></p> <p><span style="font-family:lucida sans unicode,lucida grande,sans-serif;"><span style="font-size: 16px; "><span style="color: rgb(51, 51, 51); line-height: 19px; text-align: left; ">traceroute: sendto: Permission denied.</span></span></span></p> <p style="text-align: left;"> <span style="font-family:lucida sans unicode,lucida grande,sans-serif;"><span style="font-size: 16px; "><font color="#333333"><span style="line-height: 19px; ">So I tried to ping. Ping failed, too. I then checked out the configuration of the firewall, which actually denied the pass through of ICMP packet. So I set it to allow ICMP pacakges to pass through the firewall. Ping worked as I expected. But traceroute still failed.</span></font></span></span> </p>