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There is a problem with the UNIMAS traceroute. It appears pinger.unimas.my is behind a NAT that is not passing the traceroute UDP probes. Other hosts at UNIMAS are not seeing the problem, so Johari believes it may have to do with the IPTABLES in pinger.unimas.my. Traceroute using the -I option (send the probes using ICMP rather than UDP) seems to work (but needs root access). Thus it would appear not to be in the return (ICMP "time exceeded") response. The probes (when not using the -I option are UDP packets using sequentially ports 33434 - 33465 for up to 30 hops). It is possible that ports > some number may be blocked.
Johari has set up a guest account for Anjum. Anjum logged on and reported some concerns about addresses and interfaces not matching. The The traceroute/ping server is important for the TULIP trilateration project and also understanding routing within and from Malaysia.
Johari was out of town and had limited Internet connection until 21st feb 2013. Also he realized that the ssh and ftp server is not running since the previous reboot, thus he was not able to make any changes to the website until he gotI come back and manually start those two services.
UTM
Saqib has successfully installed pinger2.pl at UTM. It is working and we are successfully gathering data from it. The URL is http://161.139.146.158/cgi-bin/ping_data.pl. The hosts needs to have a name (e.g. pinger.utm.my) registered in DNS.
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