My Norton Security, which I have used for many, many years, has just expired and whilst waiting to purchase a new edition I have temporarily installed the Avast Free program. Having completed a smart scan I have received a notification that my "Device is accessible from the internet, this device has open port(s)". I have gone further which tells me to change my router settings and at this stage I am completely lost. Their next instructions I do not find easy to follow. My ISP is Plusnet and I have their router which is a Sagemcom 2704n. I realise that ISPs do not send out the most expensive routers but I really don't want to have to purchase a new one at my time of life. Is there any way you can help me solve this problem with easy instructions. I am just concerned too that Norton did not pick up this issue.