On 01/18/2011 12:24 PM, Gerry Reno wrote: >> From primary to secondary: > > # telnet 10.XXX.58.95 24007 > Trying 10.XXX.58.95... > telnet: Unable to connect to remote host: Connection timed out > > This doesn't make sense though because the 2 servers are both in the > same security group which means that they should be able to connect on > internal IP or internal hostname with each other on any port. Have you > tried 3.1.2 on ec2 yet? Dumb question. Do you have IPtables turned on? What is the output of iptables -L What is the output of ping -c 5 10.XXX.58.95 from the other machine can you do a tcpdump -i eth0 'port 24007' on the target, and see if you can get anything when you telnet into that port? And for laughs, please try lsof -i:24007 -- Joseph Landman, Ph.D Founder and CEO Scalable Informatics Inc. email: landman at scalableinformatics.com web : http://scalableinformatics.com http://scalableinformatics.com/sicluster phone: +1 734 786 8423 x121 fax : +1 866 888 3112 cell : +1 734 612 4615