you can try website filtering software like a cyberpatrol or k9webprotection.
This software can help you to monitoring to your children, or you can see their log activity on their browser.
or you can block specific IP address that harm for your children.

this is just my opinion, hopefully can help

I have tried many different software products to monitor my children to make sure they are being safe online, but came none of that Internet filters or tools provide me a satisfactory sense of security. Some of the monitoring utilities were easily detected by our children; weather some slowed down our computer too much, or just didn't provide much useful security and information.
A few months ago, i read an article some monitoring tools; I decided to try some of them. Some was not so effective ultimately i got a tool that was really very impressive and from now I am using that tool. This tool named Parental Control Software is effective and works well.
Parental Control Software, Website blocking software that secretly blocks access to harmful sites on your system. A complete parental control software that blocks undesired web sites and offers healthy and secure internet platform for your children. Let’s check this Parental Control Software out.

filtering and blocking, running in stealthy mode, these are the the features any parental control possessed. However, I suggest you talk with your children first before you install parental control software onto their computer, trying to make them understand you and solve the problem, telling the potential danger of the internet. If you still concern the Internet security of your children, you may install parental control software onto their computers.

As a kid, I would be pretty mad at my parents if they installed spy software on my computer. I think that talking with your kids and trying to educate them is the best way to go.

It's impossible to spy on every laptop, iPad, cell phone, etc. Wouldn't it be better to teach your kids what to look out for?

Just my thoughts.

Thanks,
Anthony

I definitely like monitoring versus filtering. Its too hard to filter and kids can access sites like Facebook from nearly anywhere.

My wife and I started using SocialWebWatch.com and really like it. Neither of us have time to read everything our kids post, so its nice to get regular email updates of anything questionable.

It is a lot easier to discuss with the kids when the service reports a term or keyword issue. It also allowed us to add our own custom words.. so we added a few family terms to look for also.

I recommend monitoring.

Thanks, MariaO. Other options include new tools from AOL, Safety Toolbar and SafeSocial. Has anyone tried them? The first is free and the other is $10/mo., and they're both one of those smart new parental "control" products that require openness on everybody's part. (Kids know the software's in place - the toolbar can't be hidden - and parents know where kids have been on the Web.)

Maureen

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Maureen Kochan
ConnectSafely community manager

Hi, I would suggest you use mypornblocker to block internet access. Mypornblocker would filter and block ALL explicit content sites, especially porn. Also this is hidden in the system of your computer. This would help you greatly to block internet access to porn. Check this site out to help you with internet parental control

I had previously posted elsewhere on this site a new threat inviting discussion on monitoring vs privacy, as Tim Hunt addresses from his point-of-view in this thread. I think Tim raises a very good point which I have heard echoed repeatedly in different forums and when talking with other parents.

Personally, I guess I come back to the position of its all in how you choose to use the tool. I still advocate use of monitoring, but to Tim's point, with much restraint. You can generally monitor activity without reading their e-mails, etc. I use it to simply keep an eye on where they are spending their time, what new activities they seem to be getting into.

I feel I have a healthy relationship with my kids, but as teenagers, I also know i don't always get the whole story, and omission is something that come easily for them, be it intentional or unintentional.

So without too much snooping, I can have a sense of their online activity and interests, which enables me to more intelligently steer the occasional conversation to a related topic that in turn enables me to learn a bit more directly from my kids.

As someone else posted (to paraphrase a bit) our kids may know computers better than us, but we know life better than them...and they do not always appreciate the danger or risk associated with some online activities.

Just my two cents.