On Fri, May 18, 2007 at 03:57:01PM -0600, Mike Ciccone wrote:
> I am having a problem with SSH. I can ssh from some server but not
> others. I verified that there are no access-lists blocking from doing
> this. When I ran Wireshark on my pc and tried to ssh to the server I
> get the following line that could be telling me what the problem is.
> However, I don't understand it and was hoping some out there could
> explain it to me.
>
> Here is the line:
> [TCP Dup ACK 3#2] 1320 > 22 [ACK] Seq=1 Ack=1 win=65535 Len=0
>
> Does this mean anything to anyone? I'm guessing my problem lies here.
> If I ssh to a server that works... I don't see this line
It has meaning once you read the source code ;). The analysis within
the brackets means means that this packet is it is the 2nd duplicate ack
to packet #3. Which packet number do you first receive a notice like
the one above? Is it the third packet of the SYN, SYN+ACK, ACK TCP
handshake or a later packet?
Steve
