Re: [Without visiting website] Finding out IP address of external interface of web proxy

["Dev Null" <devj.nullj () gmail com>]

Thanks for your reply. However, please note that I could not solve my
problem using
tcptraceroute as advised by you. If I use


#tcptraceroute www.website.com 80

it does not help. I used my firewall as the gateway:

# route add default gw 192.168.100.1

# tcptraceroute www.yahoo.com 80

Tracing the path to www.yahoo.com (209.131.36.158) on TCP port 80 (http)

1 f1.www.vip.sp1.yahoo.com (209.131.36.158)

It found out only the IP address of yahoo.com and nothing more.

So what do I do now? Is there any way network protocols can be used in
some way to achieve this? May be use libnet to send some packets to an
outer host and see some reply?


On 11/13/07, Rafael Rodríguez <rafael.rodriguez.tf () gmail com> wrote:
> Oops, got confused.... the syntax is "tcptraceroute host port", so it would
> be "tcptraceroute www.yourwebsite.com 80".
>
> R
>
>
> On Nov 13, 2007 4:10 PM, Rafael Rodríguez < rafael.rodriguez.tf () gmail com>
> wrote:
> > Try tcptraceroute -p 80 ;)
> >
> > http://michael.toren.net/code/tcptraceroute/
> >
> > Regards,
> >
> > Rafa
> >
> >
> >
> >
> >
> > On Nov 1, 2007 10:22 AM, Dev Null < devj.nullj () gmail com> wrote:
> >
> > > Thanks for all the replies. Visiting all these websites you pointed,
> > > give the IP address of my external interface. Quite excellent.
> > >
> > > I would like to know of a way to use network exploration utilities
> > > like traceroute to determine the route taken by my HTTP packets
> > > throuhg the webproxy to the end host. The webproxy does not allow any
> > > other traffic other than HTTP, so I cannot use traceroute?
> > >
> > > So, how do I do this without having to visit website? Is there any
> > > other way? If an existing utility can be used for this purpose? OR if
> > > no, can somebody please explain any concept model using network
> > > protocols that how this can be done?
> > > Thanks in advance.
> > >
> > > --
> > > devj
> > >
> > >
> > >
> > >
> > >
> > > On 11/1/07, Hugo J. Curti <hcurti () exa unicen edu ar > wrote:
> > > > -----BEGIN PGP SIGNED MESSAGE-----
> > > > Hash: SHA1
> > > >
> > > > Hi Dev,
> > > >
> > > > Try: http://checkip.dyndns.org/
> > > >
> > > > Cheers,
> > > >
> > > >    Hugo
> > > >
> > > > Dev Null escribió:
> > >
> > >
> > >
> > > > > Hello All
> > > > >
> > > > >
> > > > > How do I find out the IP address of the external interface of my web
> proxy?
> > > > > To explain a bit further: A user browses web sitting in a LAN
> through
> > > > > the web proxy that allows HTTP. The web proxy is connected to the
> LAN
> > > > > using one interface and it is connected to the outer network using
> > > > > another interface. Can the user find out the IP address of the outer
> > > > > interface? If yes, how?
> > > > >
> > > > >
> > > > > Thanks in advance for any replies.
> > > > >
> > > > > devj
> > > >
> > > > - --
> > > > mailto: hcurti () exa unicen edu ar
> > > > http://www.exa.unicen.edu.ar/~hcurti
> > > > Firma digital GPG/PGP:
> http://www.exa.unicen.edu.ar/~hcurti/firma_hcurti.asc
> > > > Puede hacer una donación indirecta (gratis) de un plato de comida
> > > > para un niño pobre de la Argentina ahora mismo ingresando a
> http://www.porloschicos.com/servlet/PorLosChicos?comando=donar
> > > > -----BEGIN PGP SIGNATURE-----
> > > > Version: GnuPG v1.4.6 (GNU/Linux)
> > > > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
> iD8DBQFHKT3Ey9s+D7eSFvkRAr9oAKDgz8+/XvCfeMvW2W4obCiPcsUBwwCgnagj
> > > > bZx6KaYgHubzzfhJWKo/EJk=
> > > > =4+PO
> > > > -----END PGP SIGNATURE-----
> > >
> > >
> > > On 11/1/07, Hugo J. Curti < hcurti () exa unicen edu ar> wrote:
> > > > -----BEGIN PGP SIGNED MESSAGE-----
> > > > Hash: SHA1
> > > >
> > > > Hi Dev,
> > > >
> > > > Try: http://checkip.dyndns.org/
> > > >
> > > > Cheers,
> > > >
> > > >    Hugo
> > > >
> > > > Dev Null escribió:
> > >
> > >
> > >
> > > > > Hello All
> > > > >
> > > > >
> > > > > How do I find out the IP address of the external interface of my web
> proxy?
> > > > > To explain a bit further: A user browses web sitting in a LAN
> through
> > > > > the web proxy that allows HTTP. The web proxy is connected to the
> LAN
> > > > > using one interface and it is connected to the outer network using
> > > > > another interface. Can the user find out the IP address of the outer
> > > > > interface? If yes, how?
> > > > >
> > > > >
> > > > > Thanks in advance for any replies.
> > > > >
> > > > > devj
> > > >
> > > > - --
> > > > mailto:hcurti () exa unicen edu ar
> > > > http://www.exa.unicen.edu.ar/~hcurti
> > > > Firma digital GPG/PGP:
> http://www.exa.unicen.edu.ar/~hcurti/firma_hcurti.asc
> > > > Puede hacer una donación indirecta (gratis) de un plato de comida
> > > > para un niño pobre de la Argentina ahora mismo ingresando a
> http://www.porloschicos.com/servlet/PorLosChicos?comando=donar
> > > > -----BEGIN PGP SIGNATURE-----
> > > > Version: GnuPG v1.4.6 (GNU/Linux)
> > > > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
> iD8DBQFHKT3Ey9s+D7eSFvkRAr9oAKDgz8+/XvCfeMvW2W4obCiPcsUBwwCgnagj
> > > > bZx6KaYgHubzzfhJWKo/EJk=
> > > > =4+PO
> > > > -----END PGP SIGNATURE-----
> >
> >
> >
> > --
> > #define QUESTION ((bb) || !(bb))
> > (Shakespeare)
>
>
>
> --
> #define QUESTION ((bb) || !(bb))
> (Shakespeare)