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 command
open site.ru 80<enter>To see the raw response from the http server, get the contents of the html page online - execute the following commands
Open 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 (77.88.55.88) 56 (84) bytes of data. 64 bytes from yandex.ru (77.88.55.88): icmp_seq = 1 ttl = 58 time = 34.8 ms 64 bytes from yandex.ru (77.88.55.88): icmp_seq = 2 ttl = 58 time = 34.9 ms 64 bytes from yandex.ru (77.88.55.88): 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 (23.23.174.132) 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
Tips
How to check the sending email?
command to log on to the mail server:
open smtp.mail.ru 25
Trying aaa.bbb.ccc.ddd ...
Connected to smtp.mail.ru (aaa.bbb.ccc.ddd).
Escape character is '^]'.
220 smtp.mail.ru ESMTP Sendmail xyz / xyz; Fri, 7 Mar 2008 10:09:22 +0200
Enter the command greeting:
helo eee.fff.ggg.hhh (where eee.fff.ggg.hhh your IP-address from which you are running the telnet)
250 smtp.mail.ru
Hello smtp.mail.ru [aaa.bbb.ccc.ddd] pleased to meet you
Specify sender address (must be in the same domain as the mail server: mail.ru) mail from: taras@gmail.com 250 2.1.0 ivan @ mail.ru ... Sender ok
Specify the destination (myclient@yandex.ru): rcpt to: mailto@mail.ru 250 2.1.5 ivan ... Recipient ok
Enter the command data 354 Enter mail, end with "." on a line by itself
Subject: topic writing test
text of the letter, and finally writing a single point in a row to finish .
250 2.0.0 x2789MjQ008048 Message accepted for delivery
Enter to exit quit
221 2.0.0 smtp.mail.ru closing connection Connection closed by foreign host.
How to get the page by HTTP request to server
To see the raw response from the server http, get the contents of the html pages online - use the following command
open site.ru 80
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