I want to block internet access on a particular port of D- Link Switch

If you can connect to the Internet then the problem is most likely the configuration of your email client. You want to make sure you have the correct settings for your incoming and outgoing mail servers in your mail client. The Standard port used by POP3 is 110 for incoming mail, Outgoing SMTP server uses Port 25. Make sure your router doesn't have these ports blocked

Make the other person get their own Internet access, rather than sharing your access.

According to the documentation, The Cisco SD216 does not have any port blocking capability. It's just a simple unmanaged switch. Ports are usually blocked at a router or firewall.

blocking ports and QoS is a layer 3 function, switches are layer 2 unless you buy a layer two switch. You will need to do this on your router.

I'm not familiar with that particular router, but all of them are about the same. You can go in and edit firewall settings to allow a particular IP address to have access. Don't disable the firewall completely, just set it to allow that I.P address to have full access.

Your router does not have the advanced features that would be needed to do this. However, this can be controlled using parental controls on xbox live. Here is a link: http://www.xbox.com/en-US/support/familysettings/xbox360/familysettings-intro.htm

This particular 8-port Ethernet switch/hub has auto-negotiation on both speed as well as MDI, MDI-X.  Therefore, the problem is not with your switch/hub, it's probably with the particular port that you're connecting it to on your Router.  Make sure that it's the LAN side, not the WAN side.

Hi There, what model of dlink router do you have?
Also, Or just check the ports you have in your router, the internet should be connected to the WAN port and the switch and/or computers to the LAN port(s).
If the router is new by default you should be able to access internet by plug everything the way I told you.
Also, by default the router ip address should be 192.168.1.1, type that into your web browser address bar, then you will have access to the router admin web page were you can see the status page, there will tell you if you have or not access to Internet really. Maybe the problem is that the router have no access internet access at all.

The wan port is what you hook your modem to. Wan stands for Wide Area Network, which in your case is the internet. Your house with your 2 pc's and networking equipment would be considered a Lan, local area network.

The 4 ports on the router are switch ports, when you hook the modem up to the switch instead of the wan port the modem will only allow traffic from one physical, (MAC) address to pass through, this is why only one of your pc's can access the internet. The wan port on the router has its own MAC address, so the modem will associate with the wan port and trust all traffic that comes from that port.

Finally, after you have connected the modem to the wan port, pull the power cord on the modem then plug it back in to reset it, this will force the modem to orient with the wan port.

you can go to port forward.com and it will do it for you, just click on 'start here' but if you wish to do it yourself the ports that need to be open are- 1024-1030,5060-5065,10000-20000 http://www.portforward.com/