Have to recomment the Exploring Expect book for all expect programmers — invaluable. I’ve rewritten your code: (untested) proc login {user pass} { expect “login:” send “$user\r” expect “password:” send “$pass\r” } set username spongebob set passwords {squarepants rhombuspants} set index 0 spawn telnet 192.168.40.100 login $username [lindex $passwords $index] expect { “login incorrect” { … Read more
You need to call the constructor like this: telnetlib.Telnet.__init__(self, host, port, timeout) You need to add the explicit self since telnet.Telnet.__init__ is not a bound method but rather an unbound method, i.e. witout an instance assigned. So when calling it you need to pass the instance explicitely. >>> Test.__init__ <unbound method Test.__init__> >>> Test().__init__ <bound … Read more
The ‘\r’ character is the carriage return, and the carriage return-newline pair is both needed for newline in a network virtual terminal session. From the old telnet specification (RFC 854) (page 11): The sequence “CR LF”, as defined, will cause the NVT to be positioned at the left margin of the next print line (as … Read more
On Linux it’s actually: CTRL + ] then ENTER Finally type in the quit command. ^] telnet> quit Connection closed. [fred@localhost ~]$
I’ve used various methods for scripting telnet sessions under Unix, but the simplest one is probably a sequence of echo and sleep commands, with their output piped into telnet. Piping the output into another command is also a possibility. Silly example (echo password; echo “show ip route”; sleep 1; echo “quit” ) | telnet myrouter … Read more
The client cannot specify the timeout, it is the server configuration that determines the maximum timeout value. The extra Keep-Alive header can inform the client how long the server is willing to keep the connection open (timeout=N value) and how many requests you can do over the same connection (max=M) before the server will force … Read more
Using Linux or OSx, do what Sorin recommended but use port 465 instead. 25 is the generic SMTP port, but not what GMail uses. Also, I don’t believe you want to use -starttls smtp openssl s_client -connect smtp.gmail.com:465 You should get lots of information on the SSL session and the response: 220 mx.google.com … Type … Read more
Best C# Telnet Lib I’ve found is called Minimalistic Telnet. Very easy to understand, use and modify. It works great for the Cisco routers I need to configure.
You can’t, because as soon as you start using TLS, the conversation becomes encrypted, and you probably don’t speak that language 😉 Here is what you can do instead: openssl s_client -debug -starttls smtp -crlf -connect localhost:25 OpenSSL will do the STARTTLS handshake for you and you will be able to pick up the conversation … Read more
You could do telnet stackoverflow.com 80 And then paste GET /questions HTTP/1.0 Host: stackoverflow.com # add the 2 empty lines above but not this one Here is a transcript $ telnet stackoverflow.com 80 Trying 151.101.65.69… Connected to stackoverflow.com. Escape character is ‘^]’. GET /questions HTTP/1.0 Host: stackoverflow.com HTTP/1.1 200 OK Content-Type: text/html; charset=utf-8 …