The key phrase is "ad hoc" (or, on the Mac, "Internet Sharing"), and it's more the default than the first example you gave.
I haven't tried it from the command line, but on your Mac System Preferences, it's under the "Sharing" pref pane. --Don Ellis On Sun, Sep 11, 2011 at 3:16 PM, Robert Citek <[email protected]> wrote: > The key ingredient: the wificard must support Master mode. > Apparently, there is no way to query if the card supports a particular > mode. One just tries setting it and then checks if the mode changed. > For example, in my case my wifi card is eth1: > > $ sudo iwconfig eth1 | grep -o 'Mode:[^ ]*' > Mode:Managed > > $ sudo iwconfig eth1 mode Master > Error for wireless request "Set Mode" (8B06) : > SET failed on device eth1 ; Invalid argument. > > $ sudo iwconfig eth1 | grep -o 'Mode:[^ ]*' > Mode:Managed > > I guess not. > > Regards, > - Robert > > On Sun, Sep 11, 2011 at 3:20 PM, Robert Citek <[email protected]> wrote: >> Hello all, >> >> In the days before ubiquitous wifi cards, I was able to "tether" a >> friend's laptop without a wifi card to my laptop via a crossover >> ethernet cable. My laptop had DHCPd running on the wired interface >> and was NAT'ed to route via the wifi interface. This allowed my >> friend to access the Internet via my laptop. The setup was something >> like this: >> >> [friend] --- [me] -))) (((- Internet >> >> where "---" represents the Ethernet cable and "-))) (((-" represents >> the wifi connection. >> >> In fact, I was able to do this for a few friends at the same time if I >> brough along a switch/hub and had access to external power. >> >> I would now like to do something similar, but somewhat in reverse: >> >> [friend] -))) (((- [me] --- Internet >> >> Specifically, my friend's laptop would connect to mine via wifi, and >> my laptop would NAT/route traffic via the wired interface out to the >> Internet. >> >> I would imagine that I would somehow need to do the following: >> 1) create an ESSID >> 2) enable it to be broadcast >> 3) enable DHCPd on the wifi interface >> 4) enble NAT routing between the wifi and the wired interface. >> >> I'm getting stuck at the first two steps. This would seem as though I >> am turning my laptop into a "hotspot". However, using that search >> term hasn't brought me any joy. Every hit I've found refers to using >> a wifi router (e.g. the WRT54G) and then all kinds of fancy >> authentication schemes. >> >> Am still Googling and browsing, but any pointers to the more correct >> search terms would be helpful. >> >> Thanks in advance. >> >> Regards, >> - Robert >> > -- Central West End Linux Users Group (via Google Groups) Main page: http://www.cwelug.org To post: [email protected] To subscribe: [email protected] To unsubscribe: [email protected] More options: http://groups.google.com/group/cwelug
