SCTP Checksum wrong in GRE tunnel

RouterOS General
1

Hi,
We are seeing issues when the SCTP INIT_ACK message reach MIkrotik GRE tunnel the checksum is wrong. This caused our partner’s deive ignore the INIT_ACK packets and the SCTP connection could not built correctly.Can anyone share some idea why it happened? And maybe the solution for get the checksum right in GRE tunnel?

BR,

Weiqi

2

on firewall / service ports the pptp and sctp helper are active?

3

Hi rextended, thank you for your reply, and yes, the pptp and sctp are enabled under firewall service ports tab.

4

Hi Weiqi,
Have you managed to solve this problem.
I have a similar one with IPSEC tunnel.

regards,
Yaniv