Port checker is a network service used to check your external IP address and detect open ports on your connection. This tool is useful for finding out if your port forwarding is setup correctly or if your server applications are being blocked by a firewall.
This tool may also be used as a port scanner to scan your network for ports that are commonly forwarded. Some ports, such as port 25, are often blocked at the ISP level in an attempt to prevent malicious activity. To identify available services running on a server, this service uses raw IP packets to find out what ports are open on a server or what OS (Operating System) is running or to check if a server has firewall enabled etc.
The service can also detect uptime of a host, if the host is running one of the known OS which the scanner can analyze to guess uptime. A scanadh ar a lán dul isteach ach an óstach ainm nó an seoladh IP sa bhosca thuas agus a thabhairt ar an raon na calafoirt a scanadh, The recommended scan type is “connect()”, mar sin féin eile scanadh cineálacha is féidir a bheith úsáideach freisin ag brath ar an líonra leis an sprioc óstach, a “SYN Stealth” scan type can also prove to be useful when there’s a firewall blocking the ports. Seiceáil calafoirt oscailte agus is féidir má tá do ríomhaire reatha a seoladh IP seachtracha.
Tuilleadh faoi seo is féidir leat a iarraidh ar do ISP. Fiú smaoineamh go má tá do ríomhaire atá ceangailte leis an Idirlíon, instead of directly through the router, the test results are exactly to the router. Check the port status for the computer inside a subnet is possible only with port forwarding.
Seiceáil le do thoil seo seirbhís iontach ag: http://www.test-net.org/services/ping/ nó cuairt a thabhairt ar SEIRBHÍSÍ SAOR in aisce roghchlár