[TriLUG] traceroute works, ping and tcp services don't get through

[Joseph Mack NA3T]

On Fri, 18 May 2012, Joseph Mack NA3T wrote:

> On Fri, 18 May 2012, Michael Hrivnak wrote:
>
>> As Alexey said, UDP and ICMP are different protocols.  A 
>> big distinguishing characteristic is that UDP has a 
>> concept of ports (similar to TCP), but ICMP does not.
>
> so traceroute uses UDP packets, not ICMP. This might 
> explain why I haven't been seeing UDP packets

make that

"haven't been seeing ICMP packets"


> in my iptables LOGs when I expect them, and why I'm seeing 
> UDP packets between high ports (34xxx) that I can't 
> account for.
>
> Thanks for the explanation
>
> Joe
>
>

-- 
Joseph Mack NA3T EME(B,D), FM05lw North Carolina
jmack (at) wm7d (dot) net - azimuthal equidistant map
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