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Current HOWTO: Serial-Laplink-HOWTO


4. Connecting...

The moment of truth: connect the computers with the null modem cable, first start the server side (if you are using the "/etc/inittab" approach it should be up already), then start the client side. You should see something like this on the server:

[root@griis /root]# pppd /dev/ttyS1 nodetach
Using interface ppp0
Connect: ppp0 <--> /dev/ttyS1
user zaphod logged in
Deflate (15) compression enabled
local  IP address
remote IP address

Note that if you started pppd from the "/etc/inittab" file these messages will appear in "/var/log/messages". On the client side you should see something like this:

[root@wylg /root]# pppd /dev/ttyS0 nodetach
Using interface ppp0
Connect: ppp0 <--> /dev/ttyS0
Remote message: Success
Deflate (15) compression enabled
local  IP address
remote IP address	

On either side you can ping the other computer to see if the connection is active:

[zaphod@wylg zaphod]$ ping
PING ( from : 56(84) bytes of data.
64 bytes from icmp_seq=0 ttl=255 time=31.7 ms
64 bytes from icmp_seq=1 ttl=255 time=20.3 ms
64 bytes from icmp_seq=2 ttl=255 time=19.2 ms
64 bytes from icmp_seq=3 ttl=255 time=20.3 ms
--- ping statistics ---
4 packets transmitted, 4 packets received, 0% packet loss
round-trip min/avg/max = 19.2/22.8/31.7 ms	

You can now access the server through any TCP/IP services it might have available, such as FTP, HTTP, TELNET and SAMBA.

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