|Find the Text Strings
Start Up your Router with the "original" IOS
Connected to localhost.
Escape character is '^]'.
Connected to Dynamips VM "R1" (ID 0, type c3745) - Console port
Restricted Rights Legend
Use, duplication, or disclosure by the Government is
subject to restrictions as set forth in subparagraph
(c) of the Commercial Computer Software - Restricted
Rights clause at FAR sec. 52.227-19 and subparagraph
(c) (1) (ii) of the Rights in Technical Data and Computer
Software clause at DFARS sec. 252.227-7013.
And here you find some Keywords like Restricted Rights Legend
and now, you can edit your uncompressed image with a hexeditor
Open the IOS image and serach for the Stings, you have seen on the normal startup
Now, you can change the Text with your new Text. But its important, that you replace the same count of chars, that are there before.
Finaly, you must have the size of text, then before!
With Dynamips you can now direct use the uncompressd and modified image.
And here you see a smale change in the Boot messages ;-)
And now, you can replace some other Text Messages.
and remember, never edit the orginal image, use a copy of the ios-image.