1 Reply Latest reply: Oct 23, 2009 11:38 PM by Rtaxerxes
Rtaxerxes Level 1 Level 1 (5 points)
I am trying to setup a little home server using Snow Leopard Server. I use a Neotel (South African ISP) modem which installs as a Dupont modem. Essentially it is a CDMA USB modem.

I can connect 100% using the modem on server. However, after musch trial and error, I have found that as soon as I enable NAT, the modem connection just keeps reconnecting. I'll post some of my syslog and ppp.log so you can see what I mean.

Oct 21 20:15:38 MacOne /usr/libexec/nat_start[3341]: nat config:Notice:natd launch requested
Oct 21 20:15:38 MacOne /usr/libexec/nat_start[3341]: nat config:Notice:nat divert rule for interface 'TF-Modem0' added to firewall
Oct 21 20:15:39 MacOne /usr/sbin/serialnumberd[902]: Responding to network change notification.
Oct 21 20:15:39: --- last message repeated 5 times ---
Oct 21 20:15:39 MacOne configd[25]: network configuration changed.
Oct 21 20:15:39 MacOne /usr/sbin/serialnumberd[902]: Responding to network change notification.
Oct 21 20:15:39: --- last message repeated 9 times ---
Oct 21 20:15:39 MacOne pppd[1751]: local IP address 41.174.18.40
Oct 21 20:15:39 MacOne pppd[1751]: remote IP address 2.2.2.2
Oct 21 20:15:39 MacOne pppd[1751]: primary DNS address 41.160.0.36
Oct 21 20:15:39 MacOne pppd[1751]: secondary DNS address 41.160.0.37
Oct 21 20:15:39 MacOne /usr/sbin/serialnumberd[902]: Responding to network change notification.
Oct 21 20:15:39: --- last message repeated 2 times ---
Oct 21 20:15:39 MacOne configd[25]: network configuration changed.
Oct 21 20:15:39 MacOne configd[25]: SCNCController: Connected.
Oct 21 20:15:40 MacOne /usr/sbin/serialnumberd[902]: Responding to network change notification.
Oct 21 20:15:40: --- last message repeated 4 times ---
Oct 21 20:15:40 MacOne configd[25]: network configuration changed.
Oct 21 20:15:40 MacOne /usr/sbin/serialnumberd[902]: Responding to network change notification.
Oct 21 20:15:40: --- last message repeated 2 times ---
Oct 21 20:15:40 MacOne mDNSResponder[30]: Note: DeregisterInterface: Frequent transitions for interface ppp0 (41.174.18.40); network traffic reduction measures in effect
Oct 21 20:15:40 MacOne /usr/sbin/serialnumberd[902]: Responding to network change notification.
Oct 21 20:15:41: --- last message repeated 7 times ---
Oct 21 20:15:41 MacOne pppd[1751]: local IP address 41.174.18.40
Oct 21 20:15:41 MacOne /usr/sbin/serialnumberd[902]: Responding to network change notification.
Oct 21 20:15:41 MacOne pppd[1751]: remote IP address 2.2.2.2
Oct 21 20:15:41 MacOne pppd[1751]: primary DNS address 41.160.0.36
Oct 21 20:15:41 MacOne pppd[1751]: secondary DNS address 41.160.0.37
Oct 21 20:15:41 MacOne configd[25]: network configuration changed.
Oct 21 20:15:41 MacOne /usr/sbin/serialnumberd[902]: Responding to network change notification.
Oct 21 20:15:41 MacOne configd[25]: SCNCController: Connected.
Oct 21 20:15:41 MacOne /usr/sbin/serialnumberd[902]: Responding to network change notification.
Oct 21 20:15:41: --- last message repeated 7 times ---
Oct 21 20:15:41 MacOne configd[25]: network configuration changed.
Oct 21 20:15:41 MacOne mDNSResponder[30]: Note: DeregisterInterface: Frequent transitions for interface ppp0 (41.174.18.40); network traffic reduction measures in effect
Oct 21 20:15:41 MacOne /usr/sbin/serialnumberd[902]: Responding to network change notification.
Oct 21 20:15:42: --- last message repeated 8 times ---

And ppp.log:

Wed Oct 21 20:15:39 2009 : CHAP authentication succeeded: Welcome to pdsn.
Wed Oct 21 20:15:39 2009 : local IP address 41.174.18.40
Wed Oct 21 20:15:39 2009 : remote IP address 2.2.2.2
Wed Oct 21 20:15:39 2009 : primary DNS address 41.160.0.36
Wed Oct 21 20:15:39 2009 : secondary DNS address 41.160.0.37
Wed Oct 21 20:15:40 2009 : CHAP authentication succeeded: Welcome to pdsn.
Wed Oct 21 20:15:41 2009 : local IP address 41.174.18.40
Wed Oct 21 20:15:41 2009 : remote IP address 2.2.2.2
Wed Oct 21 20:15:41 2009 : primary DNS address 41.160.0.36
Wed Oct 21 20:15:41 2009 : secondary DNS address 41.160.0.37
Wed Oct 21 20:15:41 2009 : CHAP authentication succeeded: Welcome to pdsn.
Wed Oct 21 20:15:42 2009 : local IP address 41.174.18.40
Wed Oct 21 20:15:42 2009 : remote IP address 2.2.2.2
Wed Oct 21 20:15:42 2009 : primary DNS address 41.160.0.36
Wed Oct 21 20:15:42 2009 : secondary DNS address 41.160.0.37
Wed Oct 21 20:15:43 2009 : CHAP authentication succeeded: Welcome to pdsn.
Wed Oct 21 20:15:43 2009 : local IP address 41.174.18.40
Wed Oct 21 20:15:43 2009 : remote IP address 2.2.2.2
Wed Oct 21 20:15:43 2009 : primary DNS address 41.160.0.36
Wed Oct 21 20:15:43 2009 : secondary DNS address 41.160.0.37
Wed Oct 21 20:15:44 2009 : CHAP authentication succeeded: Welcome to pdsn.
Wed Oct 21 20:15:45 2009 : local IP address 41.174.18.40
Wed Oct 21 20:15:45 2009 : remote IP address 2.2.2.2
Wed Oct 21 20:15:45 2009 : primary DNS address 41.160.0.36
Wed Oct 21 20:15:45 2009 : secondary DNS address 41.160.0.37
Wed Oct 21 20:15:46 2009 : CHAP authentication succeeded: Welcome to pdsn.
Wed Oct 21 20:15:46 2009 : local IP address 41.174.18.40
Wed Oct 21 20:15:46 2009 : remote IP address 2.2.2.2
Wed Oct 21 20:15:46 2009 : primary DNS address 41.160.0.36
Wed Oct 21 20:15:46 2009 : secondary DNS address 41.160.0.37
Wed Oct 21 20:15:47 2009 : CHAP authentication succeeded: Welcome to pdsn.
Wed Oct 21 20:15:47 2009 : local IP address 41.174.18.40
Wed Oct 21 20:15:47 2009 : remote IP address 2.2.2.2
Wed Oct 21 20:15:47 2009 : primary DNS address 41.160.0.36
Wed Oct 21 20:15:47 2009 : secondary DNS address 41.160.0.37
Wed Oct 21 20:15:48 2009 : CHAP authentication succeeded: Welcome to pdsn.
Wed Oct 21 20:15:49 2009 : local IP address 41.174.18.40
Wed Oct 21 20:15:49 2009 : remote IP address 2.2.2.2
Wed Oct 21 20:15:49 2009 : primary DNS address 41.160.0.36
Wed Oct 21 20:15:49 2009 : secondary DNS address 41.160.0.37

While this is happening, I am unable to browse internet from the server or clients. As soon as I disable NAT, I can browse on the server, but not on any clients, obviously.

Any help please?

Macbook, iMac, iPhone, Mac OS X (10.5.5)