Hi All, I am using <ob linux>SuSE 7.3</ob linux>. I was trying to connect to http://english.aljazeera.net and wasn't able to get through. I wanted to see if the host was up so, I pinged it and got this output:
boyle:/~% ping english.aljazeera.net PING english.aljazeera.net (216.34.94.186) from 152.1.38.206 : 56(84) bytes of d ata. >From jerry.exodus.net (216.34.83.66): icmp_seq=2 Packet filtered >From jerry.exodus.net (216.34.83.66) icmp_seq=2 Packet filtered --- english.aljazeera.net ping statistics --- 6 packets transmitted, 0 received, +2 errors, 100% loss, time 5024ms boyle:/~% ping english.aljazeera.net PING english.aljazeera.net (216.34.94.186) from 152.1.38.206 : 56(84) bytes of data. >From jerry.exodus.net (216.34.83.66): icmp_seq=18 Packet filtered >From jerry.exodus.net (216.34.83.66) icmp_seq=18 Packet filtered >From jerry.exodus.net (216.34.83.66) icmp_seq=32 Packet filtered >From jerry.exodus.net (216.34.83.66) icmp_seq=41 Packet filtered >From jerry.exodus.net (216.34.83.66) icmp_seq=50 Packet filtered >From jerry.exodus.net (216.34.83.66) icmp_seq=57 Packet filtered I have never seen the "Packet filtered" message before. I did a 'whois' for this host and tracked down some phone numbers. I called the network operations people of the organization which seems to administer 'jerry.exodus.net'. I was told to send an email to them, which I did. Oddly enough, though, after my phone call, the behavior of 'ping' changed. Now this is the output I get: boyle:/x03033% ping english.aljazeera.net PING english.aljazeera.net (216.34.94.186) from 152.1.38.206 : 56(84) bytes of data. --- english.aljazeera.net ping statistics --- 309 packets transmitted, 0 received, 100% loss, time 308019ms boyle:/x03033% !ping ping english.aljazeera.net PING english.aljazeera.net (216.34.94.186) from 152.1.38.206 : 56(84) bytes of data. --- english.aljazeera.net ping statistics --- 381 packets transmitted, 0 received, 100% loss, time 380015ms >From my reading of Stevens' "TCP/IP Illustrated Volime 1", I can see that ICMP packets can return a number of codes. The message seems to most closely correspond to code 13, which is, "communication administratively prohibited by filtering", although I guess there are other possibilities (I need to look in the source for ping). Does anyone know (or have an opinion) whether this indicates a bona fide technical problem, or why would a site be blocked like this? Thanks for any help. Paul -- Paul D. Boyle | [EMAIL PROTECTED] Director, X-ray Structural Facility | phone: (919) 515-7362 Department of Chemistry - Box 8204 | FAX: (919) 515-5079 North Carolina State University | http://www.xray.ncsu.edu Raleigh, NC, 27695-8204 _______________________________________________ TriLUG mailing list http://www.trilug.org/mailman/listinfo/trilug TriLUG Organizational FAQ: http://www.trilug.org/~lovelace/faq/TriLUG-faq.html
