Solved

network configuration, dhcprealy, routing

Posted on 2004-04-16
1
232 Views
Last Modified: 2010-03-18
I install Linux (Suse distribution). I want to configure server that work as a router. I set the configuration file as follows:

#
# Network configuration for basic server
#
case ”$1” in
      start)
            echo "Starting the network"
            #
            # 1. Hostname
            #
            hostname server17
            #
            # 2. The loopback interface
            #
            ifconfig lo 127.0.0.1
            route add 127.0.0.1 lo
            #
            # 3. The ethernet interfaces
            #
            IPaddr_ext="192.168.149.17"
            Ipaddr_int="192.168.149.177"
            #  Get XXX from the note 'ServerIPaddresses'
            ifconfig eth0 $IPaddr_ext netmask 255.255.255.128
            ifconfig eth1 $IPaddr_int netmask 255.255.255.248
            #
            # 4. The default gateway
            #
            route add default gw 192.168.149.1   #<- this is my dhcp server
            #
            # Enable routing
            #
            echo 1 > /proc/sys/net/ipv4/ip_forward
            ;;
      stop)
            echo ”Stopping the network”
            ifconfig eth0 down
            ifconfig eth1 down
            ifconfig lo down
            ;;
esac


I started dhcprelay. The clients connected to my server don't get IP addresses.

Thans for any help
Best regards

Adam
0
Comment
Question by:adamgasior
1 Comment
 
LVL 5

Accepted Solution

by:
brabard earned 70 total points
ID: 10848005
The mechanism of dhcpreley is your dhcpd have to listen on 192.168.149.177:bootps , to forward dhcp requests comming to eth1to 192.168.149.1 and to forward the obtaining dhcp information back to the client trough eth1 .
So 2 most possible reasons are dhcpd on eth1 in not listening , or - dhcp server on 192.168.149.1 is not configured with proper pools/permitions .
The best way to find the problem is to use tcpdump on both machines to see what happen with packets .
0

Featured Post

Do You Know the 4 Main Threat Actor Types?

Do you know the main threat actor types? Most attackers fall into one of four categories, each with their own favored tactics, techniques, and procedures.

Join & Write a Comment

I have seen several blogs and forum entries elsewhere state that because NTFS volumes do not support linux ownership or permissions, they cannot be used for anonymous ftp upload through the vsftpd program.   IT can be done and here's how to get i…
Note: for this to work properly you need to use a Cross-Over network cable. 1. Connect both servers S1 and S2 on the second network slots respectively. Note that you can use the 1st slots but usually these would be occupied by the Service Provide…
Here's a very brief overview of the methods PRTG Network Monitor (https://www.paessler.com/prtg) offers for monitoring bandwidth, to help you decide which methods you´d like to investigate in more detail.  The methods are covered in more detail in o…
When you create an app prototype with Adobe XD, you can insert system screens -- sharing or Control Center, for example -- with just a few clicks. This video shows you how. You can take the full course on Experts Exchange at http://bit.ly/XDcourse.

759 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

18 Experts available now in Live!

Get 1:1 Help Now