walts Posted November 25, 2008 Share Posted November 25, 2008 I'm starting with a working Fon, with Jasager 2.1 installed, and following the wiki at http://wiki.hak5.org/wiki/Internet_Connect...mit_Der_Jasager. After changing the IP address of the Fon lan connection to 192.168.0.250, DHCP, bridged, and with the Ethernet port on the PC set to 192.168.0.1, I cannot connect. I've tried setting the PC port to DHCP to no avail. I've waited up to 10 minutes after a cold boot of the Fon to give it plenty of time to start up. The settings seem reasonable - as I read the screen the Fon will try to get an IP address from the Ethernet connection, and if it can't will default to the one we've provided - 192.168.0.250. After that it should be able to connect directly with a PC with an address in the 192.168.0.0/24 subnet. Correct? Since at this point I cannot communicate with the Fon at all, I have gone back to re-flashing the ROM (twice). Can anyone help me with this connection problem? TIA Walt Quote Link to comment Share on other sites More sharing options...
digininja Posted November 25, 2008 Share Posted November 25, 2008 I don't think you are right on the IP address stuff but I don't have a device to hand to check. I don't think you can't set an IP and dhcp, you have to chose one or the other. Why are you trying to set dhcp and a static ip? Why not just go for the static one. Where is your dhcp server running? Look at its logs and see what ip address it issues, or you can run a packet sniffer and watch the traffic for the dhcp request/answer, the answer will contain the ip address issued. Usually if an interface can't get an IP address it will default to one in the 169.254.0.0/16 subnet. It may take a while but you could try ping sweeping that range to see if you can find it there. Quote Link to comment Share on other sites More sharing options...
Darren Kitchen Posted November 25, 2008 Share Posted November 25, 2008 What DHCPD are you using? tfptd? Also, try a MAC scan in Cain. Quote Link to comment Share on other sites More sharing options...
walts Posted November 25, 2008 Author Share Posted November 25, 2008 I don't think you are right on the IP address stuff but I don't have a device to hand to check. I don't think you can't set an IP and dhcp, you have to chose one or the other. Why are you trying to set dhcp and a static ip? Why not just go for the static one. I agree. My recollection from setting up DD-WRT on my Linksys AP - a long time ago - was just that. For some reason, this X-Wrt GUI only opens up the IP Address box when you choose "DHCP" from the combo box (see the wiki, http://wiki.hak5.org/wiki/Internet_Connect...mit_Der_Jasager about 1/2 way down) The text next to the IP address box states that this address is used as the default if a DHCP server is not available - which is the case in my setup. Just to be sure i have the right idea, Der Jasager is plugged in by the Ethernet cable to the Ethernet port on my laptop. This is 192.168.0.250 in the example. The other interface on the laptop, a wireless interface is authenticated to my AP and then connected to the Internet. This interface is set up for ICS. When "Victim" comes along looking for "MY-AP", Der Jasager says "OK, that's me!". Now "Victim" is connected to the Internet through my laptop as a MITM. Do I have it right? Walt Quote Link to comment Share on other sites More sharing options...
digininja Posted November 25, 2008 Share Posted November 25, 2008 The second bit is right, for the first bit, if you can't find the IP address and have to reflash then just set a static IP so you can be sure what IP the Fon is on. You didn't say what DHCP server you were using. Quote Link to comment Share on other sites More sharing options...
walts Posted November 25, 2008 Author Share Posted November 25, 2008 I'm making progress, but still a bit confused. I have the Ethernet port on my PC set to a fixed IP address of 192.168.10.10 and Der Jasager to 192.168.10.250, and they connect fine. It turns out that you need to switch to DHCP to get the IP address box to shoe, then back to Fixed. I have the WIFI connection on my PC set to Internet Sharing, and it is connected to my office AP. however, unlike the Microsoft documentation, it has a "real" IP address 10.100.3.86 - that was assigned by the DHCP server on the network. the Microsoft documentations says that the adapter doing the sharing will be set to 192.168.0.1. Doesn't Der Jasager do DHCP for the wireless connections to its "victim"? When I connect to him by looking for an AP named "linksys" I get assigned an IP address of 192.168.10.216 so why do I need to have a DHCPD running on the PC? I've read the other thread on this subject and am becoming more confused by the minute :-( Sorry to be so stupid about this. Walt Edit: 2 hours later. I now have Der Jasager and the PC talking as 102.168.0.1 (PC) and 192.168.0.250 (Fon) - both fixed IP addresses, and a Verizon wireless modem set up as the shared connection. I changed the IP of the Ethernet to correspond with Microsoft's convention. Once again, I can connect to Der Jasager over WIFI and get assigned 192.168.0.216 but the connection sharing does not seem to be working. So I fired up Wireshark to see if I could learn anything. I can ping 192.168.0.1 (the Ethernet port on the PC)from the client, but no further. If I try to ping back (from the PC) I generate a bunch of ARP requests: Who has 192.168.0.216? Tell 192.168.0.1 I'll probably quit here for today. I'm grateful for any ideas, and I'll check back in the morning Walt Quote Link to comment Share on other sites More sharing options...
ADM1NX Posted November 25, 2008 Share Posted November 25, 2008 If you're trying to get your fon to be acessible via lan, with your main router as the DHCP server, try this: 1. SSH into the fon or use a serial cable to open up a terminal. 2. Edit /etc/config/network vi /etc/config/network And make your fine look like this. (hint: press "a" to enter edit mode, "Esc" will exit edit mode, ":wq" will write the file and quit) config interface loopback option ifname lo option proto static option ipaddr 127.0.0.1 option netmask 255.0.0.0 config interface lan option ifname eth0 option type bridge option proto dhcp # option ipaddr 192.168.1.1 # option netmask 255.255.255.0 3. Restart networking /etc/init.d/network restart 4. Run udhcpc to detect network settings. udhcpc 5. You're Done! Test to see if it works by installing an ipkg over the internet, or you can also test it by running: ipkg update and make sure that there are no error messages. Make sure to let us know if it works or not. :) Quote Link to comment Share on other sites More sharing options...
walts Posted November 25, 2008 Author Share Posted November 25, 2008 I assume then that I would plug the Fon Ethernet wire directly into the network, not into the PC? In any event, aren't you doing the same thing as the GUI would do setting up for DHCP and no specified IP address? Not that I have anything against vi - we're old friends from using the Nokia and Zaurus! I've kind of shut down for the night now, will try more things in the morning. Thanks :-) Walt Quote Link to comment Share on other sites More sharing options...
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