Good evening all. I need some advice on how to connect 2 clusters behind firewalls. I've done research into SGE and Globus, but according to their documentation, it will not work behind NAT firewalls. I do not want to open my firewalls just for this purpose, rather I'd like to find a way to work WITH both firewalls. Are there any other grid style solutions that WILL work in conjunction with a NAT firewall? What do the big grid farms use? If there aren't, my boss and I have discussed using a custom SSH port forwarding scheme where one port would forward to the 1st node, next port to the next node and so forth. Any other ideas? Thanks... -- Jeremy Mann jeremy@biochem.uthscsa.edu University of Texas Health Science Center Bioinformatics Core Facility Phone: (210) 567-2672