telnet

telnet to port 25 from AS400

I want to very SMTP connectivity from an AS400 in a VM to a mailserver on port 25 The native telnet command on the as400 does not seem to support a port specification. Any ideas how to telnet from as400 to port 25 on my mailserver? I can ping the mailserver from the as400 I can telnet in from other boxes (non as400) Thanks \0 ...

netstat says 443 is open, but I cannot connect to it with telnet .. why ?

I've built a self hosted wcf server, using wsHttpBinding. I'm running win 2003 server R2 SP2 If in configure it to listen on http://localhost:443/MyService, everything works fine. I can connect to http://localhost:443/MyService with Internet Explorer, and I get the standard "Bad Request" message Now, if I try to switch to https, I'm wi...

How to check if an email address exists without sending an email?

I have come across this PHP code to check email address using SMTP without sending an email. Has anyone tried anything similar or does it work for you? Can you tell if an email customer / user enters is correct & exists? Thanks! ...

What is a good Telnet client implementation C#?

What would be a good open source Telnet client implementation in C#, which can be used in close code (i.e., not under GPL)? Boaz ...

How can I automate telnet port 25 testing?

I need to make a large set of tests in telnet. I am working on some ways to auto detect dictionary attacks on our email server, and then throttle them back, or blacklist them etc. I am now ready to run some tests and see if my work pays off. I figured I would just download some script kiddy app to run the tests. I can not find any and...

How can I use python's telnetlib to fetch data from a device for a fixed period of time?

Hi, I'm connecting to a hardware device via telnet. That device is pretty simple in terms of I/O. So I submit a command to it, and after that the device pumps out data one line at a time, once per second. Each line just contains a number. So my question is this: if I connect to this device using python's telnetlib, how can I fetch data...

Default SSH/Telnet Terminal Size

I'm writing an SSH/Telnet client for the Blackberry (and for other hand-held devices). My question is more related to usability. Due to the screen size limitations for certain devices, and resolutions, how should I set the default rows/columns for the screen? Currently I am setting it to 80 columns. The number of rows is dependent on...

Transparently proxying telnet traffic?

We have written a tool to proxy telnet traffic, and fork the inbound/outbound streams for recording purposes (this is a testing tool to test a legacy system). However, we hit a snag. The legacy system relies on knowing a client's ip address in certain cases, but when we use our proxy the clients' addresses are all changed to the proxy's ...

How to deal with delays on telnet connection programmatically?

Hi all, I utilize TcpClient class to implement a telnet connection. What I don't know is how to determine the end of response. It seems that once DataAvailable property is true, I read the data from Stream and DataAvailable is then temporarily set to false while buffer is being filled with another chunk of data but I think is all read an...

Creating a script for a Telnet session?

Hello, Does anyone know of an easy way to create a script that can connect to a telnet server, do some common telnety stuff, and then logoff? I am dealing with users who are not familiar with telnet and the commands they will need to run. All I want is for them to double-click on a script, and have that script auto-magically run the c...

Telnet a server

A system is trying to telnet to a server a number of times continueously. Is there a possiblity that the process trying to telnet may crash due to buffer overflow? My situation is a perl program in a loop trying 500 times in 10 seconds opening a telnet connection and closing. ...

How would I create a remote admin console for a WCF Service using telnet/raw?

I have a WCF service currently using a TCP endpoint. Rather than create a separate console client app to administer the server I want the ability to telnet into the server or even just connect using a raw connection using putty and execute ascii commands straight on the server. Any ideas how I would go about doing this? Not an expert on...

How do you use telnet to check a connection to Oracle?

I've been trying to get sqlplus to connect to Oracle from my OS X machine. I asked another question about it here. One person suggested that I try telnet. Consulting the man page, I tried: [ ethan@gir ~ ]$ telnet DBHOST:1521 Trying xxx.xxx.xxx.xxx... telnet: connect to address xxx.xxx.xxx.xxx: Operation timed out telnet: Unable to conn...

Multiple simultaneous network connections - Telnet server, Python.

I'm currently writing a telnet server in Python. It's a content server. People would connect to the server via telnet, and be presented with text-only content. My problem is that the server would obviously need to support more than one simultaneous connection. The current implementation I have now supports only one. This is the basic,...

Does reading from a telnet stream into a large byte array wait until the byte array is full?

From reading a few questions and answers here, it seems that a telnet stream never really closes. Using DataAvailable() will not return. I've inherited some code that took a very very long time to complete and we thought it was the telnet server that was the problem. However, there is a byte[32757] which the code tries to store the res...

How do you create an anonymous Python telnet connection?

I am trying to telnet into a server using Python on Windows XP. I can connect successfully by typing 'telnet HOST PORT' which creates an anonymous connection. But Python's telnetlib.Telnet(HOST, PORT) returns 'Connection refused'. Telnetting in Java also fails. Spelunking shows that Python tries to create an anonymous socket connecti...

Where did the gnuwin32 inetutils package go?

There are traces of the gnuwin32 inetutils package on the net. But it's not at the site anymore. where is it? Specifically where is the gnu telnet app for win32? ...

How to create Telnet Client with Delphi 5

How do I create a Telnet Client inside of a Delphi 5 application? ...

telnet connection using PHP

I need to write a PHP script to telnet to a router, run a command and fetch the results. does anyone know a telnet connection library in PHP? ...

uploading code to dev or production server using ftp or using telnet, are they both not safe?

i still see people using ftp or telnet for work instead of sftp and ssh. is it true that using ftp or telnet can let people see the password quite easily? Who can actually see it? Update: for example, if i am not using Wireless... which i heard can be breakable if it is WEP when 1GB traffic is sent or received ... so if not using Wire...