atmatrix

Hi Everybody I have a weird problem connecting remotely, i installed a new 8ch DVR with DSL Modem (static real IP from the provider) I configured the Ip,DNS, port etc, and everything worked fine but the problem is every few hours sometimes days i have to reset the modem or the DVR so i can access again the thing is locally works fine. i changed the DVR, hard reset the modem tried different ports 80,80,8080 nothing worked Can someone help me with this issue. thanks alot