• How do I clear the configurations through a Telnet Session?
• How do I access my Cayman router?
• How can I backup my Cayman Router Config File?
• How do I forward ports?
• Can I Remotely Manage My Cayman?

1. Open up the Command Prompt and type in: telnet 192.168.1.254(assuming
the default LAN IP has not been changed)
2. At the Cayman Prompt type in clear
3. You will be prompted to confirm yes/no
4. Type yes and hit enter
5. The Cayman will clear its configurations back to factory defaults.
6 Type restart

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by LBB
last modified: 2003-03-09 19:17:00

There are three ways to gain access to the Cayman configuration interface, Web Browser(HTTP), Telnet Session and Maintenance Console.
All three procedures are discussed here in detail. The Telnet Session and Maintenance Console procedures are a little more demanding because it requires a little knowledge of the Command Line Interface.

By far, the easiest way to gain initial access to your Cayman Router is to browse into the web interface. If the router has never been configured, it will, by default, have an ethernet IP address of 192.168.1.254; subnet mask 255.255.255.0. It will also act as a DHCP Server, automatically giving out IP addresses starting at 192.168.1.1.
If you wish to use DHCP and want the Cayman to assign an IP Address, Subnet Mask, Default Gateway and DNS to your workstations (in Windows), select the options to "Obtain IP Address Automatically" and leave the Default Gateway section empty.

To see if you can access the Cayman configuration interface, open your web browser and put http://192.168.1.254 into the URL bar. Another option to try would be http://cayman-dsl.
If you pull up a Cayman menu or password prompt, you have, for the most part accomplished your goal covered in this FAQ. To move onto the Password Challenge, please refer to this FAQ.
If the connection times out, read on!

Each possible problem (listed below) can be overcome with determination and time. The simple and time saving solution would be to acquire a DB9 male to DB9 female serial cable and set up a connection profile in a terminal emulation program. Hyperterminal is one such emulator and it comes standard on all Windows Operating Systems and can be easily configured. The instructions to perform a full reset to factory default removing any old settings a previous owner may have configured can be found here under option 2.

If you don't care for the simple route, then read on.

Possible reasons for not being able to gain initial access to your Cayman Router:

1. The Cayman Default IP Address may have been changed to something other than 192.168.1.254.

Possible Solution:

Open a Command Prompt by going to Start > Run > and type in CMD and click OK. In the box that opens up, type in ipconfig and hit enter. Look for "Default Gateway" and that should be the IP Address of the Cayman. Use this IP as the URL in the web browser as explained above and you should be at the challenge screen.

Possible Solution2:

Try to open a Telnet Session. Follow these instructions
Open up the Command Prompt and type in: telnet 192.168.1.254 (or IP obtained from ipconfig command from above example) and hit enter.

If you get a Prompt to Login, then the problem could be the Cayman Web (HTTP) port may have been changed. See step 2 below to correct.

Another possible reason you gain access from the Telnet Session and not the Browser could be the Security Settings in your Web Browser are set too high. See step 4 to correct.

If you did NOT get a Login Prompt, a possible solution would be Step 3


2. The Cayman Web (HTTP) Port may have been changed to something other than 80.


To correct the Web (HTTP) Port number, follow these instructions.
Telnet back into the Cayman
From the Prompt,
Type in configure and hit enter
Type in set servers web-http and hit enter
Type in 80 and hit enter
Type in save and hit enter
Type in quit and hit enter
Type in restart and hit enter
Once the reboot completes, you should be able to Browse into the Cayman.


3. The Cayman LAN Administration may have been disabled which will not allow any access to the Cayman from the Browser or Telnet.


To correct the LAN Admin being disabled, follow these instructions.
Hook up a Serial Cable to the Cayman and the Serial (Com1) Port on back of your PC.
Set up a connection profile in a terminal emulator program (Hyperterminal is what I use).
Settings will be: 9600, 8, N, 1, none
Connect to the Cayman.

Once the connection is made, hit enter until you get login:


At the “Cayman-DSLxxxxx” prompt:
Type in configure then hit enter
Type in view ip ethernet A restrictions then hit enter
if it is set to"admin disabled" correct with the following
Type in set ip ethernet A restrictions then hit enter
you will see the following choices:

{none|admin disabled|admin only}


Type in none then hit enter
Type in save then hit enter
Type in quit then hit enter
Type in restart then hit enter
after the reboot, you should be able to browse back into the Cayman


4. Your current Browser Security Settings may have been set too high.


Possible Solution:

Set your browsers security level back to "Default Level"


Happy Surfing!

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by LBB
last modified: 2005-01-03 10:03:42

How can I backup my Cayman Router Config File?

The procedure(s) for backing up a Cayman Config file is outlined HERE

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by LBB
last modified: 2005-01-03 10:04:15

How do I forward ports?

Please see this link.

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by removed

Can I Remotely Manage My Cayman?

This feature is enabled by default. It can be very handy for remotely adding software features, updating firmware, or just to simply pull the stats. In short, anything you can do locally via the web browser, you can do remotely.

To verify that it is enabled on your Cayman 3220-H, 3341, 3346, 3546 or 3547W, simply follow these steps:

1. Browse into your cayman and goto configure.
2. Go to WAN, then WAN IP Interface.
3. From the Restrictions drop down box, choose NONE.
4. Click Submit.

It is highly recommended that you change your web server and telnet ports from factory default. If you do not wish to change your port numbers, go to step 10.

5. Go to Configure.
6. Choose Advanced.
7. Choose Internal Servers.
8. Change the Web and Telnet Server ports to any other port number not used by Pinholes.
9. Click submit.

10. Click the Yellow Triangle in the Upper right corner, choose save and restart.

Once the router reboots, you will be able to remotely access it using any web browser or Telnet client. If you changed your web port to 8080, you would need to append this to your address like this: 1.2.3.4:8080 This ip would of course be your WAN ip.
The same applies for Telnet sessions.

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by davidg edited by LBB
last modified: 2004-02-17 10:21:26