[pptp-server] PPTPD and NAT

[basant singh]

Hi John,

I am using PPTPD for quite along time and seems to be
working fine i have installed the pptpd on redhat 7.1
it is having a private ip 10.32.3.112 and it is NATed
on 
my check point firewall to 202.x.x.x and this is a
static NAT. 
Now I try connect to it from Internet or local network
it work fine.
Now the problem is that i having one more site it is
also behind a check point firewall network address of
my this site 2 is 10.33.30.0 and whole of my network
is 
nated to one ip 202.64.x.x. When i try to connect from
this site 2 it fails.Ports 1723 and gre 47 are open on
both the firewalls.Even i open all the ports on both
the firewalls no help.
I m attaching the error msg also.
If you have any suggestion and any idea to solve this
issue please help me.
Thanks in advance.

Bsn


Mar 22 14:50:51 ns pptpd[12178]: CTRL: Client
202.x.x.x control connection started
Mar 22 14:50:51 ns pptpd[12178]: CTRL: Received PPTP
Control Message (type: 1)
Mar 22 14:50:51 ns pptpd[12178]: CTRL: Made a START
CTRL CONN RPLY packet
Mar 22 14:50:51 ns pptpd[12178]: CTRL: I wrote 156
bytes to the client.
Mar 22 14:50:51 ns pptpd[12178]: CTRL: Sent packet to
client
Mar 22 14:50:51 ns pptpd[12178]: CTRL: Received PPTP
Control Message (type: 7)
Mar 22 14:50:51 ns pptpd[12178]: CTRL: Set parameters
to 152 maxbps, 32 window s
ize
Mar 22 14:50:51 ns pptpd[12178]: CTRL: Made a OUT CALL
RPLY packet
Mar 22 14:50:51 ns pptpd[12178]: CTRL: Starting call
(launching pppd, opening GR
E)
Mar 22 14:50:51 ns pptpd[12178]: CTRL: pty_fd = 5
Mar 22 14:50:51 ns pptpd[12178]: CTRL: tty_fd = 6
Mar 22 14:50:51 ns pptpd[12178]: CTRL: I wrote 32
bytes to the client.
Mar 22 14:50:51 ns pptpd[12178]: CTRL: Sent packet to
client
Mar 22 14:50:51 ns pptpd[12179]: CTRL (PPPD Launcher):
Connection speed = 115200
Mar 22 14:50:51 ns pptpd[12179]: CTRL (PPPD Launcher):
local address = 10.32.3.1
13
Mar 22 14:50:51 ns pptpd[12179]: CTRL (PPPD Launcher):
remote address = 10.32.3.114
Mar 22 14:50:51 ns pppd[12179]: pppd 2.4.1 started by
root, uid 0
Mar 22 14:50:51 ns pppd[12179]: using channel 2
Mar 22 14:50:51 ns pptpd[12178]: CTRL: Received PPTP
Control Message (type: 15)
Mar 22 14:50:51 ns pppd[12179]: Using interface ppp0
Mar 22 14:50:51 ns pptpd[12178]: CTRL: Got a SET LINK
INFO packet with standard
ACCMs
Mar 22 14:50:51 ns pppd[12179]: Connect: ppp0 <-->
/dev/pts/2
Mar 22 14:50:51 ns modprobe: modprobe: Can't locate
module net-pf-4
Mar 22 14:50:51 ns pppd[12179]: sent [LCP ConfReq
id=0x1 <asyncmap 0x0> <auth ch
ap 81> <magic 0x92a6b478> <pcomp> <accomp>]
Mar 22 14:50:51 ns modprobe: modprobe: Can't locate
module net-pf-5
Mar 22 14:50:54 ns pppd[12179]: sent [LCP ConfReq
id=0x1 <asyncmap 0x0> <auth ch
ap 81> <magic 0x92a6b478> <pcomp> <accomp>]
Mar 22 14:51:19 ns last message repeated 8 times
Mar 22 14:51:22 ns pppd[12179]: LCP: timeout sending
Config-Requests
Mar 22 14:51:22 ns pppd[12179]: Connection terminated.
Mar 22 14:51:22 ns pppd[12179]: Exit.
Mar 22 14:51:22 ns pptpd[12178]: GRE:
read(fd=5,buffer=804d8c0,len=8196) from PTY failed:
status = -1 error = Input/output error
Mar 22 14:51:22 ns pptpd[12178]: CTRL: PTY read or GRE
write failed (pty,gre)=(5
,6)
Mar 22 14:51:22 ns pptpd[12178]: CTRL: Client
202.x.x.x control connection finished
Mar 22 14:51:22 ns pptpd[12178]: CTRL: Exiting now
Mar 22 14:51:22 ns pptpd[4135]: MGR: Reaped child
12178






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