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17

From man 1 traceroute: -m max_ttl Specifies the maximum number of hops (max time-to-live value) traceroute will probe. The default is 30.


9

When some location is further than 30 hops, it probably means simply that last hops does not replies when TTL exceeds. Unless, it's a story: $ traceroute -m100 216.81.59.173 traceroute to 216.81.59.173 (216.81.59.173), 100 hops max, 52 byte packets (...) 14 episode.iv (206.214.251.1) 173.387 ms 171.638 ms 171.201 ms 15 a.new.hope (206.214.251.6) ...


8

A likely reason for the difference is that by default Window's tracert uses ICMP, whereas Linux traceroute defaults to UDP. Using the -I option for traceroute should produce the same results as tracert: traceroute -w 10 -I google.it From the traceroute documentation: In the modern network environment the traditional traceroute methods can not be ...


4

The asterisks you're seeing are servers that your packets are being routed through whom are timing out (5.0+ seconds) and so traceroute defaults to printing the *. NOTE: There's even a warning about this in the traceroute man page. excerpt In the modern network environment the traditional traceroute methods can not be always applicable, because of ...


3

From your output, you are not able to reach the destination. The * denotes a timeout. traceroute command shows the path to your destination. packets send to will pass through the routers and you receive a response obeying the time to live (TTL) value for each packets. the * denotes a timeout as a response from the intermediate routers that says the packet ...


2

When you echo $a, the shell does "word splitting" and all significant whitespace is lost. Try echo "$a" with double quotes. Quoting will also ensure filename expansion does not occur. See http://www.gnu.org/software/bash/manual/bashref.html#Shell-Expansions


1

In /etc/ssh/sshd_config make sure the following is uncommented: AllowTCPForwarding yes Double check your syntax too: $ ssh -N -L [local_port]:[endpoint]:[remote_port] [user]@[host] The error you're seeing is a terribly confusing error that is thrown when a forwarded ssh connection simply can't connect.


1

The stars mean a device in the chain didn't respond to your ICMP / UDP packet. That can be a router, firewall or a host configured not to respond. They're usually only interesting if you get them mixed in with responses, e.g. 21 * 10 ms * which suggests the device at or around hop 21 is intermittently responding or is intermittently available. Whether ...


1

You did read the man page, right? -i interface, --interface=interface Specifies the interface through which traceroute should send packets. By default, the interface is selected according to the routing table.



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