Uploading Cfg file to Cisco 831

Question

Really new here to Cisco. Our netwok administrator was let go and I am running the show now but am having a problem with uploading a config file to our Cisco 831 which is acting as a firewall to a T1 line. I am so newbie to Cisco so bear with me please! Our router was reset to defaults(yea, I know) and of course the config file was lost on the router but... I did find these files saved on one of our file servers. in a folder TFTP-Root
c831-k9o3y6-mz.123-2.XC2.bin
startup-config
cisco831-config
I can see the files were backed up and on this server there is a TFTP server that has been ran. Here are my questions.
1. To get the router back to where it was with these files, which ones do I need to upload?
2. Do I need to upload a boot file and config file or just one or the other?
3. I did try to upload the startup-config file using telnet and got as far as the TFTP program trying to load it to the Cisco but an error came up about the security range for the TFTP didnt include 10.10.10.1??? The wierd thing is the TFTP server is 192.168.1.10 and the Cisco is 192.168.1.252. I can ping the Cisco but I cannot figure out why the Cisco is sending to the TFTP server that its IP is 10.10.10.1.
I appreciate any help since right now our office netork has no email till I reset this.
Thanks
Jim

Answer 1

Jim
I do not think it is a stupid question. When you post to a public forum like this, all kinds of people will see what you post. It is wise to want to protect yourself.
I would suggest that as a starting point that you replace any passwords with "" (or some silimar string which shows us what passwords were configured but disguises the actual password).
I would suggest that you disguise any IP addresses that are in public address space (I believe that addresses in private space do not need to be disguised). Some people post configs with the address blanked out but I find this is sometimes counter-productive. I would suggest that you change the first octet of any public address in your config, and be careful that the first octet still shows whether this was class A, class B or class C address space. If you disguise the first octet then if the second, third, and fourth octet are the same as your config we will not have any real idea where you are, but there are valuable indications of what subnetting is being done, and perhaps other things that may be helpful.
I believe that it is probably sufficient to disguise any passwords and disguise any public IP addresses. If you look through your config and find other things that concern you (perhaps there are comments on interfaces about what they connect to that you do not want to become public) feel free to remove or to alter/disguise them.
And if you are really nervous about posting config details on the forum, you can email them to me privately. My email address is available through my forum profile. Some other forum contributors also make their email addresses available through their forum profile.
HTH
Rick