How to reboot a SMC Barricade router remotely

[Jesse Lee]

"Chris Tavares" <cct at tavaresstudios.com> wrote in message news:<9Xita.54453$ey1.5003400 at newsread1.prod.itd.earthlink.net>...
> "Jesse Lee" <jkl555 at hotmail.com> wrote in message
> news:86e72741.0305040530.49f08d6d at posting.google.com...
> > "Chris Tavares" <cct at tavaresstudios.com> wrote in message
>  news:<6u2ta.53259$ey1.4895862 at newsread1.prod.itd.earthlink.net>...
> > > "Jesse Lee" <jkl555 at hotmail.com> wrote in message
> > > news:86e72741.0305031947.29b2ec97 at posting.google.com...
> > > > I have a SMC Barricade 7004AWBR router and I am trying to find a
> > > > script that can remotely reboot the router (to renew the IP address).
> > > > I have a web server running all the time. For security reason I would
> > > > like to renew the IP address every night. Would someone point me to
> > > > any web site that I can find such a script ?
> > > >
> > > > Thanks.
> > > >
> > > > Jesse Lee
> > >
> > > I've written several similar scripts, but not for the 7004AWBR. What you
> > > need to do is act like a web client. urllib and httplib are your friends
> > > here.
> > >
> > > To figure out what you need to send, grab a copy of tcpTrace from
> > > http://www.pocketsoap.com/tcptrace/ . This is a tool that lets you
>  easily
> > > spy on http transactions, so you can tell how the router does it's
>  login,
> > > and what happens when you press the reset button. You will need some
> > > knowledge of how HTTP works to understand what's happening here.
> > > Unfortunately, every router does this sort of thing differently.
> > >
> > > Good luck,
> > >
> > > -Chris
> >
> > Chris,
> >
> > Thanks. I tried the tool and I think I know the steps I need to do are
> > login through cgi-bin/logi and then call cgi-bin/rebo for this router.
> > But the login process seems to pass encrypted password to the router.
> > This may explain why I always get "Password is incorrect".
> >
> > For the reference, here is the cgi-bin/logi web page looks like
> >
> 
> [ ... html trace skipped ... ]
> 
> What you need to do is simulate what happens when you press the login button
> on the form. This causes an HTTP post request for the form on that page.
> Notice this stuff:
> 
> <FORM ACTION=/cgi-bin/logi METHOD=POST NAME=LOGIN><INPUT TYPE=HIDDEN
> VALUE="@D" NAME=RC><INPUT TYPE=HIDDEN VALUE="root" NAME=ACCT><INPUT
> TYPE=HIDDEN VALUE="00:08:06 (S=00:00:00,P=0)" NAME=PSWD>System
> Password<BR><INPUT TYPE=PASSWORD NAME=URL SIZE=9
> MAXLENGTH=9><BR>(default: <B>admin</B>)<P><INPUT TYPE=HIDDEN
> VALUE="3ABC.374E.3ABC/3100+ADA4 at Totoro 193s1" NAME=KEY><INPUT
> TYPE=HIDDEN VALUE="R1.93s1" NAME=htm>
> <INPUT TYPE=SUBMIT VALUE="Log in"></FORM>
> 
> What you'll need to do is hit the router with a get request, parse out the
> form (htmllib can help with this) so that you get the values of all the
> hidden elements, and then pass those values back in a POST request. You're
> missing the hidden fields, so that's why you're getting the "incorrect
> password". If you do several requests, you'll notice that the PSWD and
> possibly the KEY values change every time. That's why you need to get the
> form before you do the post.
> 
> Good luck,
> 
> -Chris

Chris,

I got the script working as you suggested. Thank you very much. Now I
can set up a cron job to renew the IP address periodically.

Jesse