I have tried hard on making ppp connection on my rh4.0 to my ISP. I can manually dial to the ISP using minicom and make ppp connection. After enter the "ifconfig" or "route -n" command, everything seems alright. However, I then try to check the connecting by "ping" the ISP or other address, it just send a little package of data out but never back. Moreover, I cannot use other services like ftp as well. I have checked the file "resolv.conf" and sure the information on that file is right. Suppose it is my own machine problem because I can connect smoothly with my win95 machine. Is there any problem with my kernel? I install the redhat system on every default option. Did I missed anything important? Thank you for any help.