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VPN (PPTP) not working after Upgrade from v7 to v8

Matthias_W
Hi,

We've upgraded our ASG120 from latest version 7 to latest version 8.201.
Now VPN (PPTP) will not allow incoming connections from external users (like iPhone Users or Home Users).
From the internal network the PPTP connection works and Astaro accepts the connection.

Our Network looks like this:

Internet - Netgear Pro Safe Firewall  - Astaro Security Gateway 120 - Inernal LAN


  • Netgear -NAT enabled, VPN Passthrough, PPTP is redirected to Astaro
  • Astaro - Connection tracking helpers for PPTP is selected


With version 7 it ​​all worked! 

But now with Version 8 the Firewall Log says:
Default Drop 47 Mobilphone IP -> Astaro LAN Adress

and PPTP Log says:
proxy pptpd[10762]: GRE: Bad checksum from pppd. 

I've been looking all day for a solution. I'm thankful for every idea!


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Parents
  • 0
    Hello,

    It was working before... I don't change anything...
    But now doesn't work...

    Internal and External VPN 1723 Port

    I can not VPN from the inside to out. FIREWALL RULE
    I can not VPN from the outside to in. NAT RULE

    FIREWALL RULE #1

    Internal Network --> PPTP --->  Any


    NAT RULE #1

    DNAT
    Traffic selector:  Any →  PPTP →  External (WAN) (Address)
    Destination translation:  WINDOWSSERVER  PPTP
    Automatic Firewall rule: CHECKED
    Initial packets are logged: CHECKED

    How to resolve my problem.

    Firmware version:  8.311
    Pattern version:  57249

    When Shutdown Astaro, NAT via ADSL Modem 1723 Running 
    Internal to External (Firewall) or External to Internal (NAT)

    Thank you.
Reply
  • 0
    Hello,

    It was working before... I don't change anything...
    But now doesn't work...

    Internal and External VPN 1723 Port

    I can not VPN from the inside to out. FIREWALL RULE
    I can not VPN from the outside to in. NAT RULE

    FIREWALL RULE #1

    Internal Network --> PPTP --->  Any


    NAT RULE #1

    DNAT
    Traffic selector:  Any →  PPTP →  External (WAN) (Address)
    Destination translation:  WINDOWSSERVER  PPTP
    Automatic Firewall rule: CHECKED
    Initial packets are logged: CHECKED

    How to resolve my problem.

    Firmware version:  8.311
    Pattern version:  57249

    When Shutdown Astaro, NAT via ADSL Modem 1723 Running 
    Internal to External (Firewall) or External to Internal (NAT)

    Thank you.
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