PPTP isp and mt nat

RouterOS General
1

Hi

I have problem with pptp gateway and nat on mt.
Config :

users → mt (wlan 1 nat) (PPtP gateway) → ISP

 0  R name="pptp-out1" max-mtu=1460 max-mru=1460 connect-to=172.xx.xx.xx user="user" password="password" 
      profile=default add-default-route=yes allow=mschap1,mschap2 

0   chain=srcnat src-address=10.11.10.0/24 action=src-nat to-addresses=80.xx.xx.xx to-ports=0-65535

 0 ADC 10.11.10.0/24      10.11.10.1                                 wlan1    
 1 ADC 80.xx.xx.xx/32     80.xx.xx.xx                                pptp-out1 
 2 ADC 172.16.16.0/24     172.16.16.3                                ether1   
 3 A S 0.0.0.0/0                          r 80.xx.xx.xx              pptp-out1

i can’t ping from my network (10.11.10.0/24) any adress behind nat, pages don’t open, etc.
I missing something or doing it wrong ?

2

Art,

By what it sounds like to me is your masquerade rule is missing. If you are trying to have your private ip block access the internet using the IP address of your MT then use masquerade.

Matt

3

there is nat

even i change to

0 chain=srcnat src-address=10.11.10.0/24 action=masquerade

still nothing

4

Art,

Once you have the masquerade rule then try typing this in a dos prompt on one of the client pc’s…

ping 4.2.2.2 -l 1460

If you get a successful reply back then your having a MTU and MRU issue.

Matt

5

standard ping is only 32 so this must go , but it isn’t

i think there is problem with pptp and nat in mt