On Tue, Mar 17, 2009 at 09:36:28AM -0500, Lanny Marcus wrote: > They did. I can load the web pages from centos.org again. :-) Thanks > to everyone on the list who helped and also to the person at Layered > Tech who eliminated the glitch! <quoting them (Network Operations, Layered Technologies) > ... It looks like there may be a probelm with an offsite (non LT) router. I will have networking investigate and get back to you as soon as possible. ... </quote> Then a few minutes later :) <quote> Dear Customer: I've read through the thread on your message boards, and don't see anything that jumps out as a problem on the traceroutes. The "Administrative block" results you are seeing are likely due to default traceroute behavior on *nix systems is to use UDP as the sending protocol. In order to prevent UDP flood attacks against our network, our routers and switches do not respond to UDP requests. The best way to run a traceroute to a server in our data centers is to force traceroute to use ICMP instead of UDP. On most *nix systems, this can be done by using the "-I" flag. In answer to other speculation on the thread, we don't block any IPs from our network as a whole. Our business is to allow you to make your server available to anyone and everyone you want to have access to it. Therefore, we only block IPs if a customer has a hardware firewall that we manage for them, and we only block it utilizing that customer's firewall and at that customer's request. Therefore, any blocks that are put in place do not affect other customers' servers. I hope this clarifies some of the issues, although it doesn't resolve the problem the user in Colombia is having reaching your site. Another test he could perform would just be to ping your server's IP and see if he gets a response -- if he does, then the routing and switching is working correctly. Thank you, Network Operations Layered Technologies </quote> -- Tru Huynh (mirrors, CentOS-3 i386/x86_64 Package Maintenance) http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xBEFA581B
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