IDN (Internationalized Domain Names) - the standard for transcoding domain names in the DNS system, containing local symbols. Here you can use the function idn to ascii converter online.
IDN The record can be recorded in two different ways:
Punycode is an algorithm that describes the conversion of Unicode characters to ACE format.
To re-encode the domain name from the punycode format (xn-h1alffa9f.xn-p1ai) to the national (russia.rf), use the command idn_to_utf8
To get the punycode (xn-h1alffa9f.xn-p1ai) representation on behalf of the domain in the national format (russia.rf) - use the command idn_to_ascii
To see the raw response from the server http, get the contents of the html pages online - use the following commandopen site.ru 80<enter>
To see the raw response from the http server, get the contents of the html page online - execute the following commandsOpen site.ru 80 & lt; enter & gt;
To check the availability of the server using the online ping service. In the input field where type is written - enter ping yandex.ru to ping the server online
In response, you'll get something like
PING yandex.ru (184.108.40.206) 56 (84) bytes of data. 64 bytes from yandex.ru (220.127.116.11): icmp_seq = 1 ttl = 58 time = 34.8 ms 64 bytes from yandex.ru (18.104.22.168): icmp_seq = 2 ttl = 58 time = 34.9 ms 64 bytes from yandex.ru (22.214.171.124): icmp_seq = 3 ttl = 58 time = 34.8 ms --- yandex.ru ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2001ms Rtt min / avg / max / mdev = 34.800 / 34.882 / 34.964 / 0.066 ms
Such a response indicates a successful PING
PING your-server.com (126.96.36.199) 56 (84) bytes of data. --- your-server.com ping statistics --- 3 packets transmitted, 0 received, 100% packet loss, time 1999ms
This answer on the contrary says that the server does not respond to the ping. The server may be unavailable or the ping option is closed.
Write 25 [ENTER] in the input field of open server.com to connect to the server - server.com and port 25. Next, you begin to communicate directly with the software that accepts connections on the specified port. In our case, this is an SMTP port (25) and it means there will be some kind of mail program. How to send a message directly through the SMTP server can be read above.
To check the port availability on the server - type the command in the (type here) field open server.com 666 [ENTER] to connect to the server named "server.com" and port 666
If in return you received something like
Connection to server.com:666 - fail
Error # 110 (Connection timed out)
Then port 666 on this server is closed.
If you successfully connect, you will receive a message Connection to server.com:666 - ok