On 07/31/2013 01:03 AM, Vipul Singhania wrote:
Thanks for reply.
There is no firewall in that network. This is just separate network.
and I can say they are directly connected to each other using L1
switch and no other connection to outside world.
It was jut testing that I have giving public IP to one of interface in one host.
- The association look like with public IP.
sh-3.2# cat /proc/net/sctp/assocs
ASSOC SOCK STY SST ST HBKT ASSOC-ID TX_QUEUE RX_QUEUE UID INODE
LPORT RPORT LADDRS <-> RADDRS HBINT INS OUTS MAXRT T1X T2X RTXC
ffff8800089b0000 ffff8800335944c0 2 1 3 37916 3 516
0 0 10635 48520 7168 127.3.253.1 127.3.21.1 127.4.253.1
127.2.253.1 127.1.221.1 164.48.1.1 127.3.254.1 <-> *127.4.252.1
7500 300 300 10 0 0 0
ffff8800089b2000 ffff880033594000 2 1 3 50717 4 516
0 0 10634 60890 7169 127.3.253.1 127.3.21.1 127.4.253.1
127.2.253.1 127.1.221.1 164.48.1.1 127.3.254.1 <-> *127.4.252.1
7500 300 300 10 0 0 0
-----------------------------------------------------------------------------
- But if I give private IP (10.1.1.1) this look like.
sh-3.2# cat /proc/net/sctp/assocs
ASSOC SOCK STY SST ST HBKT ASSOC-ID TX_QUEUE RX_QUEUE UID INODE
LPORT RPORT LADDRS <-> RADDRS HBINT INS OUTS MAXRT T1X T2X RTXC
ffff88003c721800 ffff8800335944c0 2 1 3 22045 2 0
0 0 5674 47434 7169 127.3.253.1 127.3.21.1 127.4.253.1
127.2.253.1 127.1.221.1 <-> *127.4.252.1 7500 300 300 10
0 0 0
ffff88003c720800 ffff880033594000 2 1 3 36124 1 0
0 0 5673 58513 7168 127.3.253.1 127.3.21.1 127.4.253.1
127.2.253.1 127.1.221.1 <-> *127.4.252.1 7500 300 300 10
0 0 0
- I may be wrong but is it possible that when we do bind with on IP
(and if multi homing is enabled) it'll build with all available
interfaces?
Try this test after you do:
echo "2" > /proc/sys/net/sctp/addr_scope_policy
The default policy will not use private addresses if global ones are
available.
-vlad
Please forgive if I ask stupid question. First time I am doing network
programing and trying to learn this.
On Tue, Jul 30, 2013 at 6:36 PM, Neil Horman <nhorman@xxxxxxxxxxxxx> wrote:
On Tue, Jul 30, 2013 at 04:52:52PM +0530, Vipul Singhania wrote:
Hi All,
I have one test case in which I have 2 interfaces on each machine (two hosts).
One is working as server and one is as client.
If in server I make one interface as public (IP address 164.x.x.x)
then the server sends reset to the client).
So question is does SCTP support association between public to private
range IP address?
Sort of, SCTP will gladly use any available ip address in the establishment of an
association. That said, you do need to take care that your firewalls aren't
going to mess with those addresses. That is to say, if you have an address that
is 'private' in the sense that it is behind a nat firewall, you will likely get
a reset from the use of that address, because the peer will see connections from
that address as comming from the public natted address, which was not in the
association init chunk, hence the abort.
Neil
Thanks in advance.
--
-=vipsy
http://through-dlens.blogspot.in
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