[pptp-server] Telnet, Ftp connections are being dropped at random

[Jason Shackelford]

I have a masquerading firewall running RedHat 6.2.It is also running PPTPD
from the RPM. I have gotten windows clients to connect fine.  The vpn
connection seems to stay very solid.  I am opening telnet sessions within
that tunnel and they are getting kicked off at random.  It doesn't seem to
be a timeout issue.  The people can even be doing work when it kicks them
off.  I ran some tests and found out that it is not happening to FTP.  I am
running more tests to see if it has anything to do with the Solaris server
we are connecting to.  After the telnet connection is lost, the VPN
connection is still up and running fine. Telnet connects right back up if
you re-open the  session.  Any help would be greatly
appreciated.