Hi,

I see. Binding on 0.0.0.0:port

I didn't do this on the last patch. I used the wrong way to get IP address
and bind it.

I'll correct it and send the patch again.
Thank you




Che-Wei Lin <http://about.me/linton.tw>,  John Lin
Institute of Communication Engineering,
National Tsing Hua University
[image: 林哲緯 on about.me]
E-mail: [email protected]
Blog: blog.linton.tw
Mobile: +886-952-301-269


On Sun, Sep 7, 2014 at 6:36 PM, FUJITA Tomonori <
[email protected]> wrote:

> Hi,
>
> On Sun, 7 Sep 2014 17:49:39 +0800
> Che-Wei Lin <[email protected]> wrote:
>
> > On Ubuntu python's stdlib socket.gethostbyname return 127.0.1.1 NOT
> > 127.0.0.1
>
> ?
>
>
> http://serverfault.com/questions/363095/why-does-my-hostname-appear-with-the-address-127-0-1-1-rather-than-127-0-0-1-in
>
> > Python 2.7.6 (default, Mar 22 2014, 22:59:56)
> > [GCC 4.8.2] on linux2
> > Type "help", "copyright", "credits" or "license" for more information.
> >>>> import socket
> >>>> socket.gethostbyname(socket.gethostname())
> > '127.0.1.1'
> >
> > It will cause the connect fail on Ubuntu, but Mac OS X can work normally
> >
> > Python 2.7.8 (default, Aug 24 2014, 21:26:19)
> > [GCC 4.2.1 Compatible Apple LLVM 5.1 (clang-503.0.40)] on darwin
> > Type "help", "copyright", "credits" or "license" for more information.
> >>>> import socket
> >>>> socket.gethostbyname(socket.gethostname())
> > '192.168.111.105'
> >
> > I tried to bind(('0.0.0.0', port)) but it return 127.0.0.1 either Mac OS
> X
> > or Ubuntu.
> > Remote client (Snort machine side) can't connect to 127.0.0.1.
>
> I'm not sure we are on the same page. I just meant that bind() with
> "0.0.0.0" accepts a connnection via any host's ip address. To make
> clear, I've attached simple code.
>
> > I also found another way to get host IP but need additional installs
> > package netifaces. (https://pypi.python.org/pypi/netifaces)
> >
> > Or, maybe let someone config controller IP address in applications?
> >
> >
> > Che-Wei Lin <http://about.me/linton.tw>,  John Lin
> > Institute of Communication Engineering,
> > National Tsing Hua University
> > [image: 林哲緯 on about.me]
> > E-mail: [email protected]
> > Blog: blog.linton.tw
> > Mobile: +886-952-301-269
> >
> >
> > On Sun, Sep 7, 2014 at 3:44 PM, FUJITA Tomonori <
> > [email protected]> wrote:
> >
> >> Hi,
> >>
> >> On Sun, 7 Sep 2014 15:34:02 +0800
> >> Che-Wei Lin <[email protected]> wrote:
> >>
> >> > I fixed some trivial minor bug and corrected some typos in the
> document.
> >> >
> >> > I found that when i want to get the REAL IP.
> >> > The old version used on Ubuntu python's stdlib socket.gethostbyname
> >> return
> >> > 127.0.0.1.
> >>
> >> I guess that a host can have multiple real IP addresses and 127.0.0.1
> >> is one of them.
> >>
> >> If I understand your code correctly, you try to connect to 8.8.8.8 and
> >> use the address to access to 8.8.8.8 for binding a listen port. I'm
> >> not sure if it is a good idea because:
> >>
> >> 1) A host could not access to the internet (8.8.8.8) due to many
> >> reasons (firewall, etc).
> >>
> >> 2) Even a host can, the address for accessing to the Internet is not
> >> appropriate for a listen port for this application.
> >>
> >> Why not?
> >>
> >> bind(('0.0.0.0', port))
> >>
> >> > This patch I am using another way to get the real IP
> >>
>
> import socket
>
> serversocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
> serversocket.bind(("0.0.0.0", 8080))
> serversocket.listen(5)
> (clientsocket, address) = serversocket.accept()
> print "accept a new connection", clientsocket.getpeername()
>
>
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