shell vs. process

Trevor DeVore lists at mangomultimedia.com
Tue Oct 10 00:52:57 CDT 2006


On Oct 9, 2006, at 4:23 PM, Luis wrote:

> Hiya,
>
> ICMPd sends the data packets in either TCP or UDP over that port  
> number, check IANA: http://www.iana.org/assignments/port-numbers
>
> Here is the packet structure: http://www.techbooksforfree.com/ 
> intro_to_data_com/page253.html

Luis,

How sure are you that ping over port 5813 using TCP should work on  
any system setup to look for ICMP echo mmessages?  I tried opening a  
socket to google over that port and I get a socketTimeout.

open socket "66.102.7.99:5813"

If I run ping from terminal (OS X) then the ping to the same address  
works.  I can see in my traffic watcher (see below) that the protocol  
being used is ICMP (Protocol: 1).

Any of you network gurus know if ping is possible with Rev right now  
using sockets?


-- 
Trevor DeVore
Blue Mango Learning Systems - www.bluemangolearning.com
trevor at bluemangolearning.com


Traffic Watcher Data:


ICMP Echo Request packet from 10.0.1.2 to 66.102.7.99 (64 bytes)
IP Header:
Version: 4; Header Length: 20; TOS: 0; Packet Length: 84
Identifier: 12052; Fragment Offset: 0
Time To Live: 64; Protocol: 1; Header Checksum: 63178
ICMP Header:
Type: 8; Code: 0; Checksum: 63770
Identifier: 0; Sequence Number: 12834
Data:
08 00 F9 1A  0C B3 00 00  45 2B 32 22  00 07 8F DA  ........E+2"....
08 09 0A 0B  0C 0D 0E 0F  10 11 12 13  14 15 16 17  ................
18 19 1A 1B  1C 1D 1E 1F  20 21 22 23  24 25 26 27  ........ !"#$%&'
28 29 2A 2B  2C 2D 2E 2F  30 31 32 33  34 35 36 37  ()*+,-./01234567



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