All other tráfic Gets bloked except these Packets Stephan Rottmann rottmann@ibr.cs.tu-bs.de escreveu em qui, 4/05/2017 às 18:32 :
To be honest, I have no idea... But can you try to block anything not from the device wlan0/adhoc, but the source IP address(es) of the other nodes?
Stephan
On Do, 2017-05-04 at 17:01 +0000, Leonel Gaspar Soares wrote:
No, even when only connected by wi fi beacons keep showing up... Stephan Rottmann rottmann@ibr.cs.tu-bs.de escreveu em qui, 4/05/2017 às 17:43 :
Hi,
are the nodes connected via another interface, such as Ethernet? Then those beacons might arrive through that one...
Stephan
Am Donnerstag, den 04.05.2017, 17:15 +0100 schrieb Leonel Gaspar Soares:
Thanks, I will look into your simulation, but what I don't
understand
is why, even with blocked traffic in one node (with say iptables
-A
INPUT -o wlan0 -j REJECT and iptables -A OUTPUT -o wlan0 -j
REJECT),
this node still listens to packets UDP of MIH in tcpdump and whireshark still is displaying these packets... why do they keep coming, even when the traffic is blocked in this node?
On Thu, May 4, 2017 at 1:25 PM, Martin Wegner <wegner@ibr.cs.tu-b
s.de
wrote: Hey,
we developed also a simulator here at IBR which can be used to simulate a multitude of DTN nodes via VMs running on one or several
hosts.
The simulator is called Hydra (paper [0], code [1], complete
rewrite in
repos [2-4]).
It came to my mind regarding your issue, as Hydra allowed communication between VMs, if the nodes were in communication range according
to
their mobility, by setting up the corresponding iptables rules. You
can
find the exact rules that were used at [5, 6]. Maybe you can extract them for your purpose, or maybe even use Hydra directly.
[0] https://www.ibr.cs.tu-bs.de/bib/xml/HYDRA.html [1] https://github.com/morgenroth/hydrasim/ [2] https://github.com/morgenroth/hydra-node [3] https://github.com/morgenroth/hydra-webmanager [4] https://github.com/morgenroth/hydra-slave [5] https://github.com/morgenroth/hydrasim/blob/master/slave/src/co
ntro
l.py#L151 [6] https://github.com/morgenroth/hydra-slave/blob/master/hydraslav
e/co
ntrol.py#L380
Best, Martin Wegner
On 05/03/17 22:12, Leonel Gaspar Soares wrote:
Thanks for the guidance! In my simulation, I have one more
issue... I
want to block traffic in nodes, wifi interface, but iptables
rules don't
seem to block the UDP packetes from MIH in port 4551
(discovery
beacons?)... I've tried
iptables -A INPUT -i adhoc -j REJECT iptables -A OUTPUT -o adhoc -j REJECT
iptables -A FORWARD -i adhoc -o adhoc -j REJECT iptables -A FORWARD -i adhoc -o adhoc -j REJECT
ip6tables -A INPUT -i adhoc -j REJECT ip6tables -A OUTPUT -o adhoc -j REJECT
iptables -A INPUT -m pkttype --pkt-type multicast -j REJECT iptables -A OUTPUT -m pkttype --pkt-type multicast -j REJECT
iptables -A FORWARD -m pkttype --pkt-type multicast -j
REJECT
iptables -A FORWARD -m pkttype --pkt-type multicast -j REJECT
But I can not simulate connectivity loss, beacause udp
packets in
port
4551 keep on comming, although these rules are applied...
anyone
tried
iptables for simulation of connectivity loss with ibr-dtn?
-- ,---- [ contact info ] | Martin Wegner, M.Sc. | IBR, research group Connected and Mobile Systems | Technische Universität Braunschweig | office: | Mühlenpfordtstraße 23, room 131 | 38106 Braunschweig, Germany | phone: +49 531 391 3246 | mail: wegner@ibr.cs.tu-bs.de | GnuPG key: 0x04210FF947C76DD7 `----
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