We are experiencing a strange behaviour on a VPN we have from Italy to China. The VPN between a PIX 515E and a PIX 506E (we have tens of these VPNs). Till the end of April our VPN worked fine, but it was absolutle too slow to be seriuosly usable. So people in China decided to change Internet connection provider.
From that moment the VPN (reconfigured to comply with the new public
IP) didn't work fine anymore. For example it is possible to connect to PC in China from Italy using VNC, but it is impossible to connect to SAP Servers in Italy from China (using SAPGui). Moreover also a Citrix connection from China to Italy doesn't work.
Does anyone has ideas on this problem? TIA