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Due to the current gap in continued funding from the U.S. National Science Foundation (NSF), the NSF Unidata Program Center has temporarily paused most operations. See NSF Unidata Pause in Most Operations for details.
>>From: "Kevin W. Thomas" <kwthomas@xxxxxxxxxxxxxxxxxx>
>>Organization: UCAR/Unidata
>>Keywords: 200308202000.h7KK04Ld017925 IDD traceroute ldmping
>
>Kevin and Gilbert,
>
>RE:
>>>What LDM are you running? If not 6.014, an upgrade should solve that.
>>>Maybe OU is blocking incoming 388 as a suspect DOS attack?
>>
>>We're running an older LDM, however, I don't think that is the problem.
>>I can't reach your web site from OU.
>>
>>Traceroute shows:
>>
>>traceroute to weather2.admin.niu.edu (131.156.8.58), 30 hops max, 40 byte pack
>> ets
>> 1 129.15.192.1 (129.15.192.1) 0.682 ms 0.697 ms 0.399 ms
>> 2 192.168.255.233 (192.168.255.233) 0.748 ms 0.635 ms 1.283 ms
>> 3 164.58.10.97 (164.58.10.97) 1.471 ms 1.524 ms 0.944 ms
>> 4 164.58.10.213 (164.58.10.213) 1.522 ms 1.562 ms 1.125 ms
>> 5 164.58.10.158 (164.58.10.158) 1.795 ms 1.811 ms 1.736 ms
>> 6 tulsok6wcx2-pos2-0.wcg.net (64.200.227.105) 3.902 ms 3.239 ms 3.569 ms
>> 7 64.200.240.81 (64.200.240.81) 9.740 ms 9.631 ms 9.315 ms
>> 8 dllstx1wcx2-pos9-0.wcg.net (64.200.110.129) 9.624 ms 9.879 ms 9.481 ms
>> 9 dllstx9lce1-oc48.wcg.net (64.200.110.82) 9.094 ms 9.338 ms 9.120 ms
>>10 dllstx9lce1-level3-pos.wcg.net (64.200.110.150) 9.231 ms 9.473 ms 9.654
>> ms
>>11 so-1-2-0.bbr1.Dallas1.level3.net (209.244.15.161) 9.197 ms 9.218 ms 9.0
>> 98 ms
>>12 209.247.9.82 (209.247.9.82) 32.800 ms 33.080 ms 33.074 ms
>>13 gige9-0.hsipaccess1.Chicago1.Level3.net (64.159.1.226) 32.722 ms 32.977
>> ms 32.477 ms
>>14 h5-0-0-1.niu.bbnplanet.net (4.0.201.174) 105.053 ms 35.244 ms 37.023 ms
>>15 131.156.168.1 (131.156.168.1) 37.193 ms 37.536 ms 36.391 ms
>>16 * * *
>
>We can successfully do a traceroute and ldmping from the UPC to Gilbert's
>machine, weather2.admin.niu.edu:
>
>% traceroute to weather2.admin.niu.edu (131.156.8.58), 30 hops max, 40 byte
>packets
> 1 flra-n140 (128.117.140.252) 1 ms 0 ms 0 ms
> 2 gin-n243-80.ucar.edu (128.117.243.81) 1 ms 1 ms 1 ms
> 3 64.140.70.213 (64.140.70.213) 2 ms 2 ms 2 ms
> 4 170.147.161.94 (170.147.161.94) 3 ms 3 ms 2 ms
> 5 199.183.38.6 (199.183.38.6) 28 ms 28 ms 28 ms
> 6 peer01.sji-ca.icg.net (170.147.129.3) 27 ms 32 ms 28 ms
> 7 170.147.0.74 (170.147.0.74) 29 ms 28 ms 28 ms
> 8 GigabitEthernet1-0-108.edge1.paix-sjo1.Level3.net (209.245.146.197) 32 ms
> 32 ms 32 ms
> 9 GigabitEthernet3-2.core1.SanJose1.Level3.net (209.244.3.253) 31 ms 32 ms
> 32 ms
>10 ae0-52.mp2.SanJose1.Level3.net (64.159.2.33) 32 ms 31 ms 31 ms
>11 so-0-0-0.bbr1.Chicago1.level3.net (209.247.9.78) 54 ms 54 ms 55 ms
>12 gige8-0.hsipaccess1.Chicago1.Level3.net (64.159.1.222) 54 ms 54 ms 54 ms
>13 h5-0-0-1.niu.bbnplanet.net (4.0.201.174) 59 ms 57 ms 57 ms
>14 131.156.168.1 (131.156.168.1) 58 ms 58 ms 57 ms
>15 * * *
>16 weather2.admin.niu.edu (131.156.8.58) 87 ms^C
>
>% ldmping weather2.admin.niu.edu
>Aug 20 20:02:00 State Elapsed Port Remote_Host rpc_stat
>Aug 20 20:02:00 RESPONDING 0.237881 388 weather2.admin.niu.edu
>Aug 20 20:02:25 RESPONDING 0.068136 388 weather2.admin.niu.edu
>Aug 20 20:02:50 RESPONDING 0.062403 388 weather2.admin.niu.edu
>Aug 20 20:03:16 RESPONDING 0.063707 388 weather2.admin.niu.edu
>Aug 20 20:03:41 RESPONDING 0.071672 388 weather2.admin.niu.edu
>
>Given that the traceroute path from us to Gilbert is goes through the
>same node, 131.156.168.1, and we can get through, it is likely that
>the problem has either cleared itself up, or your access is being
>blocked.
>
>Tom
I did some log checking, and found the following:
munchkin.caps.ou.edu Connection started failing Thursday August 14th at
8:24pm CDT. I haven't had any connections since.
winkie.caps.ou.edu I was wrong. This machine *can* connect, however, it
is getting "access denied". This started on Friday
August 15th at 9:23am.
I've been able to come with a lot of CAPS computers than can connect to
"niu.edu", and I can come with a lot that can't.
Kevin W. Thomas
Center for Analysis and Prediction of Storms
University of Oklahoma
Norman, Oklahoma
Email: kwthomas@xxxxxx
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