net.ipv4.ip_forward = 1 Repeat this procedure for all (Web design templates)
net.ipv4.ip_forward = 1 Repeat this procedure for all wireless Red Hat Linux computers on your LAN. At this point, your wireless network should be ready to go. Restart your network, as described in the following steps, to make sure that it is working. Restart wireless interfaces To cause the information you just entered to take effect for your wireless cards, simply restart the PCMCIA interface on your Linux computer. You can then test that you can communicate between the two wireless computers using standard TCP/IP tools (such as the ping command). To restart the wireless interfaces, type the following as root user from a Terminal window on each of the wireless computers: # /etc/init.d/pcmcia restart Shutting down PCMCIA services: cardmgr modules. Starting PCMCIA services: modules cardmgr When the service stops, the card will beep once. When it restarts, it should beep twice. If it doesn t, either the card isn’t seated properly or the card’s module or adapter card isn’t configured properly. To check that the two wireless nodes can communicate, try the ping command. For example, if the IP address of the first computer were 172.31.0.10, type the following from the second computer: $ ping 172.31.0.10 PING 172.31.0.10 (172.31.0.10) from 172.31.0.11 : 56(84) bytes of data 64 bytes from 172.31.0.10: icmp_seq=0 ttl=255 time=6.195 msec 64 bytes from 172.31.0.10: icmp_seq=1 ttl=255 time=2.872 msec 64 bytes from 172.31.0.10: icmp_seq=2 ttl=255 time=2.037 msec 64 bytes from 172.31.0.10: icmp_seq=3 ttl=255 time=2.065 msec — 172.31.0.10 ping statistics — 4 packets transmitted, 4 packets received, 0% packet loss round trip min/avg/max/mdev = 1.037/3.292/6.195/1.709 ms Type Ctrl-d to end the ping command. If packets are transmitted and received without error, you have completed your wireless LAN connection! You can now use this connection as you would any wired Ethernet LAN. Depending on your intended use of this LAN, you will probably want to take at least some of the following steps: Firewalls Protect your computers from drive-by hacking by setting up a firewall on each of the wireless nodes. Router If you are using the wireless LAN to extend your Internet connection to another part of a building or an adjacent building, at least one node needs to provide the other wireless node(s) access to that connection. You can provide this access by turning on packet forwarding and configuring the computer as a router. Services Just as you would with any TCP/IP connection to a Linux computer, you can configure the services that are available to the wireless nodes. If you are using your wireless laptop to write a novel in the garden, you can configure the wireless computer in your house to act as a print server, file server, mail server, or other type of server (along with providing access to the Internet).
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