Local business uses SBS2008 with RRAS set up for incoming VPN connectivity. Single NIC server is NATTED behind a Netgear WNDR3700 flashed with DD-WRT. Internet connections is 35x5.
Remote user connects via windows 7 PPTP client from a Cox home connection. He is NATTED behind a Linksys WRT54G. Every night he copies a 90MB file to his machine over the VPN via UNC path....something like xcopy \\server.domain.local\share\file.ext or similar. Works beautifully.
Remote user then changes his router....NOTHING ELSE....to a SonicWall TZ 100.
upon doing so, he can consistently crash the netgear WNDR3700 within 1 to 2 minutes after initiating the same file copy.
the netgear has a 600+ mhz CPU with 64MB ram and GB ports. i'd wager it's more powerful than the Sonicwall even though it is not a 'business-class' router. ZERO other problems with the netgear. Immediately upon rebooting the Netgear, everything continues as normal.
I tried a UNC copy of an ISO image from my house which is a similar Time Warner/Cox type connection behind a standard home router and it pegged at 5 megabits and caused ZERO issues.
what am i missing here. what on earth could be causing this? the sonicwall is the only thing that has changed.