I have recently moved my existing RH 5.1 PPP server to a new RH 6.0 machine and am now having problems getting it to work. I use mgetty and its AutoPPP fucntion to start pppd using CHAP where there are options defined in two files options.ttyS0 and ttyS1. The old RH 5.1 box worked fine with NT and Win98 dialup clients but since moving over to RH 6.0 I initially couldnt get NT clients to work, I had to add the -detach option to each of the tty's option files. The main problem is that now the Win98 client appears to be connected from there end, however they cannot do anything and their modem lights are constantly on. Examining the /var/log/messages with kdebug 8 shows some weird error messages Jan 6 17:03:26 celcius kernel: 6C Protocol Jan 6 17:03:26 celcius pppd[1080]: Protocol-Reject for unsupported protocol 0x7263 Jan 6 17:03:26 celcius pppd[1080]: Protocol-Reject for unsupported protocol 0x7263 These messages get repeated forever until the client disconects Here are my options -detach ttyS1 57600 crtscts auth debug bsdcomp 12 deflate 12 vj-max-slots 12 require-chap nodefaultroute lock :172.22.250.40 proxyarp idle 900 ms-dns 172.22.250.10 ms-dns 172.22.250.11 My Windows NT clients do not have any problem connecting. This setup is identical to the RH 5.1 setup apart from the -detach option as it would work without it and would reset as soon as someone connected.
Were Windows 98 clients able to connect to your previous setup? This protocol rejection error is eerily similar to bug 8350 (both of you are seeing the same protocol rejected). Do the clients have any additional client-side components (VPN, PPTP, etc.) installed?
Closing due to old age.