[slim] Re: Connectivity with wireless bridge in SB2
I think I have this fixed now - if Windows Firewall is enabled on the bridged PC then nothing will get through even from PC's on the same network, same subnet etc. Disabling windows firewall allows me to successfully access the bridged PC. I wish Windows Firewall had the ability to let through anything by IP address etc. Anyway thanks to everyone for their help. Matt. -- empedia ___ Discuss mailing list Discuss@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/discuss
[slim] Re: Connectivity with wireless bridge in SB2
empedia Wrote: I think I have this fixed now - if Windows Firewall is enabled on the bridged PC then nothing will get through even from PC's on the same network, same subnet etc. Of course! That's what firewalls do. Until you configure them otherwise, most block everything incoming by default, and are less restrictive outgoing. Your outgoing ping works with the firewall enabled because the connection was initiated by the stateful firewalled PC, and the firewall maintains a connections table. But incoming traffic like your ping from the other PC across the bridge is blocked by the firewall. Being 99% certain can often lead to misleading diagnosis. -- MrC ___ Discuss mailing list Discuss@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/discuss
[slim] Re: Connectivity with wireless bridge in SB2
OK, I have since posted this as a general problem on another forum and the consensus is that the wireless bridge is doing some kind of hiding or network address translation on the bridged PC. Could someone from Slim Devices confirm is this is the case and is expected behavior or not please and more importantly is the bridge configurable in anyway to enable the required functionality. Thanks a lot, Matthew. -- empedia ___ Discuss mailing list Discuss@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/discuss
[slim] Re: Connectivity with wireless bridge in SB2
I've done some more testing on this to eliminate my access point etc. I set up an ad-hoc wireless network and connected to it from the SB2. I get exactly the same behavior as before. There are no other devices on the network that I know of which might interfere with the working of this so I can only conclude that this will not work the way I want it to unless I hear otherwise. One other thing I should mention is that I have firmware 15 installed on the SB2 - maybe I should try a later firmware perhaps - would this be worthwhile. -- empedia ___ Discuss mailing list Discuss@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/discuss
[slim] Re: Connectivity with wireless bridge in SB2
empedia Wrote: I've done some more testing on this to eliminate my access point etc. I set up an ad-hoc wireless network and connected to it from the SB2. I get exactly the same behavior as before. There are no other devices on the network that I know of which might interfere with the working of this so I can only conclude that this will not work the way I want it to unless I hear otherwise. One other thing I should mention is that I have firmware 15 installed on the SB2 - maybe I should try a later firmware perhaps - would this be worthwhile. OK we'll look into it. I don't think upgrading the firmware would make a difference - nothing's changed in the TCP/IP/wireless code recently. -- seanadams ___ Discuss mailing list Discuss@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/discuss
[slim] Re: Connectivity with wireless bridge in SB2
I can confirm that bridging works as desired by empedia, but can also confirm that slim is showing the same Mac address for itself (.145 ip below) and the device on the ethernet port (the .150 address). 192.168.2.145 00-04-20-05-b8-2c dynamic 192.168.2.150 00-04-20-05-b8-2c dynamic -- MrC ___ Discuss mailing list Discuss@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/discuss
[slim] Re: Connectivity with wireless bridge in SB2
MrC, Are you saying that you can ping both the SB2 and the PC behind the bridge successfully from another PC on the network. If so can you post the details of your setup. What are the ramifications of the same MAC address for the bridged PC and the SB2 Thanks, Matthew. -- empedia ___ Discuss mailing list Discuss@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/discuss
[slim] Re: Connectivity with wireless bridge in SB2
Yes, I was able. I could ping to/from either side of the SB2. I was able to use higher level protocols, like Windows Sharing as well. From my main PC, I was able to navigate the Windows network to my laptop attached to slim's ethernet port. Slim itself is wirelessly connected. The SB2 appears to be spoofing the Mac address and translating back. It must be handling incoming packets for devices on the ethernet port when bridged, and forwarding them along. Some devices on the wireless side of the net (be they wireless or not) might have trouble with devices that have more than one IP address on the same subnet. Maybe this is why you are having trouble. Someone elsewhere in a forum had suggested some routers would need to be configured to allow Mac passthru - don't know if you're router/ap has such a setting. -- MrC ___ Discuss mailing list Discuss@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/discuss
[slim] Re: Connectivity with wireless bridge in SB2
Hmmm. This is strange. I've eliminated my router/access point as the problem by setting up an ad-hoc network with the same results. Did you use static IP addresses or DHCP allocated I'm only using intel x86 PC's on either side of the bridge so I don't imagine its anything arcane like that. I think I might try connecting a different PC behind the bridge and see what that does. I assume you are just using a vanilla SB2 with no firmware upgrades past 15 etc - although it seems that shouldn't make any difference either. If the SB2 is spoofing the MAC address etc. how does the MAC address resolve to the correct PC - i.e. when I ping my bridged PC how does my PC know to route the ping via the SB2 - if that makes sense? -- empedia ___ Discuss mailing list Discuss@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/discuss
[slim] Re: Connectivity with wireless bridge in SB2
empedia Wrote: Did you use static IP addresses or DHCP allocated Wouldn't matter - this is a higher level protocol, and how the IP address gets allocated is irrelevant. empedia Wrote: I'm only using intel x86 PC's on either side of the bridge so I don't imagine its anything arcane like that. I think I might try connecting a different PC behind the bridge and see what that does. Also wouldn't matter what chip/architecture you are using. You're grasping at straws. empedia Wrote: I assume you are just using a vanilla SB2 with no firmware upgrades past 15 etc - although it seems that shouldn't make any difference either. Vanilla SB2, but I'm using the latest 6.2beta, with firmware 19. Dean suggested there have been no TCP/IP firmware changes since 15, so it probably wouldn't help resolve the problem you are seeing. empedia Wrote: If the SB2 is spoofing the MAC address etc. how does the MAC address resolve to the correct PC - i.e. when I ping my bridged PC how does my PC know to route the ping via the SB2 - if that makes sense? The PCs on either side wouldn't know - they just see the slim as the destination. But packets do contain both a Mac address and an IP address, and certainly slim sees this IP address and can forward to the correct PC. A device is uniquely identified by its IP/Mac address. You can install Ethereal on your non-bridged PC and see what packets slim is forwarding to it. -- MrC ___ Discuss mailing list Discuss@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/discuss
[slim] Re: Connectivity with wireless bridge in SB2
empedia Wrote: The PC is configured so that the SB2 is the default gateway and I can browse the net from the PC etc. This is wrong, although it doesn't explain the bahaviour you're seeing. I'm surprised you're able to browse the net from that machine. The default gateway setting for ALL machines on the LAN, including this one behind the SB2, should be set to your router's address: 192.168.0.1. -- seanadams ___ Discuss mailing list Discuss@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/discuss
[slim] Re: Connectivity with wireless bridge in SB2
seanadams Wrote: This is wrong, although it doesn't explain the bahaviour you're seeing. I'm surprised you're able to browse the net from that machine. The default gateway setting for ALL machines on the LAN, including this one behind the SB2, should be set to your router's address: 192.168.0.1. Yes indeed. Is slim acting as a proxy packet forwarder in bridge mode? empedia - you need to understand that by placing a different gateway IP on your first pc, you are trying to have the SB2 act as a router. However, since both sides of your bridge are on the same subnet, no routing is required. Packets for the same subnet are just dumped on the wire, and each device on that wire (or wireless virtual wire) listens for its mac address and matches its IP address later - no routing required. -- MrC ___ Discuss mailing list Discuss@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/discuss
