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TOPIC: VPN Concentrator

VPN Concentrator 10 years 3 months ago #16333

  • wlekns
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I have a VPN Concentrator that is not recognizing my CTL+C when trying to reset the administrator's pw (due to lack of documentation from the previous admin).

Any Suggesions?
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Re: VPN Concentrator 10 years 3 months ago #16334

  • Smurf
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Well, never had to do this before to be honest. Wonder if the Cntrl C is like a break sequence in the boot up like on a Cisco Router ? If so then you could try the Break Sequence that corresponds to the Telnet Client you are using;

http://www.cisco.com/en/US/products/hw/routers/ps133/products_tech_note09186a0080174a34.shtml has a list of popular apps and what the corresponding sequences are

Hope it helps
Wayne Murphy
Firewall.cx Team Member
www.firewall.cx

Now working for a Security Company called Sec-1 Ltd in the UK, for any
Penetration Testing work visit www.sec-1.com or PM me for details.
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Re: VPN Concentrator 10 years 3 months ago #16335

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I pretty much used everyone of these yesterday with no luck - thanks though
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Re: VPN Concentrator 10 years 3 months ago #16339

  • Dove
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Cisco Suggest the following steps to reset the Cisco VPN Concentrator password.

Step−by−Step Procedure

Follow these steps to recover a password:
Connect a PC to the VPN Concentrator with a straight−through RS−232 serial cable between the
console port on the VPN Concentrator and the COM1 or serial port on the PC (Cisco supplies the
cable with the system).

1.Start a terminal emulator (HyperTerminal) on the PC. Configure a connection on COM1 with portsettings of:

9600 bits per second ¨
8 data bits ¨
no parity ¨
1 stop bit ¨
hardware flow control ¨
Set the emulator for VT100 emulation, or let the emulator auto−detect the emulation type.

2.When the Concentrator boots, and after the power−up diagnostics check is complete, a line of three
dots (...) appears on the console, a sample of which is shown here for reference. Press Ctrl−C within
three seconds after you see these dots. This displays a menu that lets you reset the system passwords
to the defaults.

Boot−ROM Initializing...
Boot configured 128Mb of RAM.
...
Loading image ..........
Verifying image checksum ...........
Active image loaded and verified...
Starting loaded image...
Starting power−up diagnostics...
...
!−−− At this second set of three dots, press Ctrl−C.
!−−− On version 4.0.X and earlier returns with this information:
Main Menu Options
−−−−−−−−−−−−−−−−−
1 − Reset Passwords
Q − Quit Main Menu
!−−− Newer version 4.1 and later returns with this information:
Main Menu Options
−−−−−−−−−−−−−−−−−
1 − Reset Administrator Accounts
Q − Quit Main Menu



Default Username & Password
Username : admin
Password : admin



Hope it will helps you


Regards,
Dove

Dove
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Re: VPN Concentrator 10 years 3 months ago #16346

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I am guessing you are following the document suggested by Dove and that you are getting to the Ctrl C portion and its not working ?

Do you not have a SmartNet contract with Cisco ? It may be best to contact them direct if you have.

Unfortunately i have ran out of idea's on this one.

Cheers

Wayne
Wayne Murphy
Firewall.cx Team Member
www.firewall.cx

Now working for a Security Company called Sec-1 Ltd in the UK, for any
Penetration Testing work visit www.sec-1.com or PM me for details.
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Re: VPN Concentrator 10 years 3 months ago #16354

  • wlekns
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The information from Dove is where I started and got nowhere. Unfortunately, I'm new in the org and have found that the previous admin let the Cisco agreement run out so I'm looking at doing a one-time call.

Thanks for the help,
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