We have recently deployed Checkpoint firewall R80.20 (to replace an old Palo Alto) and found some issues when accessing certain web sites: some pages of 1 web site are not accessible, from the logs we found that there is redirect to another port of same ip address, even we allow that additional port, the web page is still not accessible.
Example: http://www.ais.msa.gov.cn/hsj/cbxx/index.jhtml, the first tab is not accessible, while other tabs are OK. The content in the 1st tab of this web site is
A workaround is to add a rule to allow any to that page. But there are several more web sites that have same issue and I think there should be a better solution for them.
Can someone give some suggestions?