Just from curiosity....
Ehud Gavron
GAVRON at ACES.COM
Sat Jan 18 15:55:31 UTC 1997
ftp://ftp.aces.com/software/traceroute/traceroute_new.c
ftp://ftp.aces.com/software/traceroute/0_readme.txt
This BETA version incorporates two new changes:
1: It will show a !A for administratively-prohibited packets (see below)
2: It will allow modification of a line terminator from standard <LF>
to anything else, allowing, for instance, dynamic access from
web browsers (see www.opus1.com/www/traceroute.html)
Feel free to test.
Ehud
>You see this behavior because your traceroute program does not
>understand the ICMP "administratively prohibited" (ICMP type 3, code
>13 - defined in RFC 1812) messages being sent back to it from
>cpe1.reston.mci.net.
>Cisco routers typically return ICMP messages of this nature to the
>source of traffic which is being blocked by a traffic-filtering
>ACL on the Cisco router.
> - roy -
> -------------------------------------------------------------------------
>| roy alcala | MCI |
>| IP Development | 2100 Reston Parkway |
>| roy at mci.net | Reston, Virginia 22091 |
>| beep-roy at mci.net (pager) | (703) 715-7425 |
>| (800) SKY-PAGE PIN 1633689 | (703) 715-7066 FAX |
> -------------------------------------------------------------------------
>>
>>
>>Anyone have any insights on what causes the following interesting data
>>from a traceroute?
>>
>>10 cpe1-fddi4-0.Reston.mci.net (204.70.176.102) 39 ms 36 ms 38 ms
>>11 * cpe1-fddi4-0.Reston.mci.net (204.70.176.102) 36 ms *
>>12 cpe1-fddi4-0.Reston.mci.net (204.70.176.102) 38 ms * *
>>13 cpe1-fddi4-0.Reston.mci.net (204.70.176.102) 41 ms * *
>>14 cpe1-fddi4-0.Reston.mci.net (204.70.176.102) 194 ms * *
>>15 cpe1-fddi4-0.Reston.mci.net (204.70.176.102) 36 ms * *
>>16 cpe1-fddi4-0.Reston.mci.net (204.70.176.102) 36 ms * 37 ms
>>17 * cpe1-fddi4-0.Reston.mci.net (204.70.176.102) 37 ms *
>>18 cpe1-fddi4-0.Reston.mci.net (204.70.176.102) 37 ms * 35 ms
>>
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