Dos attack against my tor node?

[Freemor]

Hi All 

   I  was examining my system logs tonight and noticed something
interesting.. What appears to be an attempt to DoS my tor node. 3
separate attempts spaced about 2 hours apart all from IP's in the same
ISP (From "Pacific Internet Thailand"). I've been running the Tor node
(middleman node) for a while now and this is the first time I've seen
this. 

So my questions is:

  is this common have others seen this type of behaviour?
  

Thanks in advance
Freemor


------

Freemor <freemor at yahoo.ca>
Freemor <freemor at rogers.com>

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