http://www.dslreports.com/forum/r20748135 en Wed, 11 Nov 2009 07:04:24 EDT Wed, 11 Nov 2009 07:04:24 EDT http://www.dslreports.com/forum/remark,20791784 efflandt : I knew that when I had a proxy_arp wireless /29 subnet of my of my main /24 LAN, that arp from the main LAN showed the MAC of the Linux box doing proxy_arp instead of MAC of IPs behind it. It actually had 3 nics, 1 pppoe, 1 LAN, 1 WAP11.

But I did not realize that MACs were not transparent across a bridge (even though IPs are) until I got a 2Wire 2700HG-B wireless/modem/router and started using a Zyxel router as wireless client bridge to connect my wired desktop and occasionally an old laptop. The 2Wire automatic or manual local DNS assigns names based on IP and uses names to set up port forwarding, but remembers names/forwarding based on MAC (in case DHCP assigns different IP). That can throw a wrench into port forwarding or MAC based access control for anything behind the bridge.

So if you are going to have a server behind a bridge, it may be best if that is the only thing behind that bridge. My Linux box is wired directly to one of the modem/router ports, so I have no issues with internet access for its ssh or www (using no-ip.com dynamic DNS). ]]> http://www.dslreports.com/forum/remark,20791784 Mon, 14 Jul 2008 21:20:50 EDT http://www.dslreports.com/forum/remark,20786395 Chief : I'm using a Linksys wet54g wireless bridge running multiple devices, on both sides of my network, using a wrt300n router. The Linksys wet54g has an option that if enabled could cause the type of issue you described. I have the Cloning Mode on the wet54g set for Disable. This allows me to connect to multiple units using a standard five port router on the bridge side, without one system taking control. When in Auto mode, the Bridge will use the MAC Address of the device connected to the Ethernet port and drop any other device. If you choose Manual mode then one device will be connected to the Bridge and you can can clone the MAC Address of a specific device. Since I want to use Multiple devices I have it set for disable not Auto or Manual.
I don't know if the buffalo wireless network bridge has this function. I hope this helps.
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Wisdom comes with Listening]]> http://www.dslreports.com/forum/remark,20786395 Sun, 13 Jul 2008 21:24:40 EDT http://www.dslreports.com/forum/remark,20748135 LLigetfa : The problem is that the two units share the MAC address of the Buffalo. This is a limitation of the 802.11 protocol and the only way to change that is to use WDS instead.
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Strange as it seems, no amount of learning can cure stupidity, and formal education positively fortifies it. -- Stephen Vizinczey]]> http://www.dslreports.com/forum/remark,20748135 Sun, 06 Jul 2008 08:32:39 EDT http://www.dslreports.com/forum/remark,20747787 anon : I have a wireless router, linksys wrt310n, and then a buffalo wireless network bridge. Behind the bridge is a DVR and my server running WHS. Does the bridge know where to send the info via ip because when ever I have my DVR connected to the internet my settings for my server go away and I can no longer access my web pages, and when I set up my server I lose the capability to access my DVR from my Network. It seems that things get messed up when I try to access them, but they work fine together when they are just going out to the internet.
Also I have the Linksys EasyLink Advisor which never shows the two devices active at the same time.
Any information on this would be appreciated!]]> http://www.dslreports.com/forum/remark,20747787 Sun, 06 Jul 2008 02:49:49 EDT