strange one. to me anyway, you'll probably spot the easy thing i've missed out... lol
customer is setting up a wireless LAN with USR kit. has 2x desktops and 1x laptop. he purchased a PCMCIA wireless card for laptop, PCI wireless card for desktop 1, and USB wireless adapter for desktop 2.
desktop 1 is connected to ADSL, but that's irrelevant for now...
all 3 PC's show connection, as in the signal is shown as "strong" or "excellent" but i cannot ping either of them from any other PC/laptop.
firewalls all disabled...
all have winXP so should be easy enough...! tried the connection wizard thingy and that doesn't help either, works on desktop 1, but configuring others then it won't find an IP. if i then set static IP addys on the other 2 on the same range as #1, this still doesn't work. all are on same workgroup. still no ping or connection.
on desktop 1, if i ping 127.0.0.1 (which queries it's own loopback address) then that's fine. if i then ping it's IP addy then i get timed out... WHY???
can someone plz tell me what i'm missing? i did have this working 2 weeks ago but all of a sudden it aint working anymore (who knows what the user did! lol)
Further thought. Make sure when you connect the router that you change the SSID from the default. Everyone knows the default SSID and that makes it easy for an unauthorised bod to get into the network.