OK... let's start all over again at the firewall level.

Can you flush all (I mean ALL) the rules from the firewall so we can set this thing up?

how do i do that?

Sounds like you can. ;)

Flushing:
policys (I'll accept everything from everywhere for this experiment)
Let's enable masquerading:
let's enable forwarding
From this moment on, whatever packet goes out from your linux box, it will have as the source address the linux box itself (doesn't matter if the packet was originally sent from another box). That means, if one packet arrived at the linux box but was meant to go to another computer, the linux box will forward it to the right computer it was meant to BUT it will have as the source the linux box itself, so packets go back to it (and it will forward the replys to the right computer it was meant to also).

Hope that works.

I tried that, but i got an error on the last part


hitetsu@WhiteNinj4:~ $ sudo echo 1 > /proc/sys/net/ipv4/ip_forward
bash: /proc/sys/net/ipv4/ip_forward: Permission denied

??? try logging in as root. (I know sudo does that... but it seems to be failing).
login as root and send the command.

i cant log in as root, it doesnt seem to let me

username: root
password: [none]

i tried, using my password aswell, but it still didnt work

:O

Do you know how to recover from this situation? I know how, in case you don't... but it requires restarting with another linux (probably KNOPPIX or another live-cd).

no idea =/

i got a SuSE 9.2 live cd...that good enough?

post the O/P of

ifconfig

regards

I guess so. You have to start a session (not the installation, but a session.. a terminal) as root, mount the partition where you have the /etc of your working linux, edit the /etc/passwd file (of the working linux... not the CD) (with vi, probably) and remove the x after root:.

That way, when you start your working linux, and log in as root, it will have no password.

how do i mount the drive and edit the file?

[edit] i couldnt run ifconfig with the live cd in[/edit]

with mount.

For example:

Then you have the partition hda6 mounted in /mnt/tmp.

Cant he start up his Ubuntu in single user mode? And change the password in an easy way?

mmmmmmmmm........... well... now that you are saying that, I can remember that when I start my mandrake in single user mode, it doesn't even ask for my password... so I think that's a possibility.

Debian will ask root pw unless you pass 'init=/bin/bash' to kernel. Hmmm, not sure about exact syntax, my personal RAM may be errenous...

EDIT

Just gave it a try. With GRUB:

press e, select kernel command line with arrow down, press e again, add 'single init=/bin/bash', press Enter, press b to boot. And volila! - you are in as root. Changing password is a piece of cake! I love LQ, every time I learn something myself.