North American Network Operators Group
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Re: Recommendation of Tools

  • From: Craig Holland
  • Date: Fri Dec 05 14:47:57 2008 
Hi...

> According to the 0.75 sorcecode ICMP is still the default prot used,
> and the definition of MTR from bitwizards homepage disagress with you:
> 
> "mtr combines the functionality of the 'traceroute' and 'ping'
> programs in a single network diagnostic tool.
> As mtr starts, it investigates the network connection between the
> host mtr runs on and a user-specified destination host. After it
> determines the address of each network hop between the machines, it
> sends a sequence ICMP ECHO requests to each one to determine the
> quality of the link to each machine. As it does this, it prints
> running statistics about each machine. For a preview take a look at
> the screenshots."
> 
> Even if you use UDP/TCP or whatever, the return packet will be ICMP
> and that will be ratelimited by any carrier worth there salt...

...recent attempts to get mtr working through a cisco fwsm got me sniffing,
and yes indeed, icmp is the protocol in play with mtr (both outbound and
inbound).


Rgs,
craig