WRVS4400N accessing local services via external IP

Hello everyone,
Recently I'm having issues with accessing local services via external IP. Short description of configuration:
- sub.mydomain.com pointing to my external IP.
- few web services running on my local server with reverse proxy on Apache 2
- firewall on router enabled
- ips on router disabled
- single port forwarding: WAN 80->Lan 443, WAN 443->LAN 443
- accessing my services via sub.mydomain.com/service1, sub.mydomain.com/service2, etc
- I had to create a new rule in internet access policy allowing LAN, any, any to
Basicaly if I go no matter if I type http or https I will be redirected on 443.
That configuration has beed working without any issues for a month. Recently I have increased the amount of DHCP users and suddenly it's not working any more. I can still access my services from outside but not from LAN.
Restarting router does the trick for a while, sometimes for few minutes, sometimes longer.
Enabling IPS is the way to go but then I'm limited to around 22Mbit/s.
I did almost everything what is possible to solve this issue, I'm lost and frustrated. I have no idea what happend.
What I can't understand that it was working, suddenly it's stopped and there are two solutions, either to enable IPS or to restart router which to be honest aren't the solution I'm looking for.
Please help me point the problem.
Thank you in advance
Best regards
Bartek

Hi, My name is Eric Moyers. I am a Network Support Engineer in the Cisco Small Business Support Center.
I recieveed your email and have looked at your posting. This seems like it may be more complicated that what should be handled in a chat. Could you please call into the the Small Business Support Center for support.
Check the listings on this link and contact the center nearest you.
http://www.cisco.com/en/US/support/tsd_cisco_small_business_support_center_contacts.html
If you are in the US, please call 1-866-606-1866, and any answering agent should be able to assist you.
Eric Moyers
Cisco Network Support Engineer
CCNA, CCNA-Wireless
1-866-606-1866

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