Setup the network

[juno2]

I have newly install a RH8 , and have made the network card setting - /etc/sysconfig/network-scripts/ifcfg-eth0 and /etc/sysconfig/network , but it seems still well config the network card , I tried to setup it on X windows, i found the card is inactivate but it denied me to activate it , is there any other setting need to make to config the network card and join the network ? thx.

[juno2]

sorry , the above question have mistake , my problem is I still CAN'T config the network card .

[Patrick Van Humbeeck · Accepted solution]

is your network card recognized and is the driver loaded ?
what does ifconfig eth0 and dmesg | grep eth say ?

[juno2]

thx reply, sorry to my ignorance , do i need to install the driver , i use intel 100 network card , can i autodetect the driver ? thx.

[Steven E. Protter]

Intel cards absolutely should be autodetected by the initial installation. You should not have to do anything.

try brining up the card with ifconfig to see if it works.

ifconfig eth0 mask
echo $?
If you get a zero back, that means you suceeded.

ping

If you have multiple cards it might be eth1, etc

Common causes of the card not coming up include:
1) Invalid ip_address/network mask combination
2) Another device on your network has the IP adddres.

Check it out and get back to us with the contents of that ifcfg-eth0 file so we can run through it for you.

Good Luck,

Keep hacking away at Linux, its fun.

SEP

[juno2]

Thx help , it is OK now , but it can't be start the telnet service , how can i start it ? thx.

[Stuart Browne]

You need to make sure the appropraite software is installed, and then turned on.

rpm -q telnet-server

If this returns a single like, you have the appropraite software. If so, then you should be able to issue this:

chkconfig telnet on

and be able to telnet into the machine. Please note however that by default, you will not be able to log directly in as 'root' from a pseudo (network) tty.

[Huc_1]

If you can avoid it dont use telnet use ssh
telnet send it password/user data in clear in clear on the net ssh is probably installed on you system and does the same only this is encrypted

have a look at ssh, sftp, scp man page and do

ls -l /usr/share/doc/openssh*

read the doc it is worth-it

login as as root to find out if this service is running do

#service sshd status

to start do
#service sshd start

now if you still want to use telnet to get it working you also have to check that this is not blocked by the level of security you shoose at installation time ? that is telnet port could be closed.

the ease way to check this from RH is to invole the setup command as root in the setup menu there is a firewall configuration (also service,network,printer,etc..).

Hope this get you even more addicted.

Jean-Pierre