just now i installed telnet on my VPS. but while connecting to other server it gives error
# telnet 10.10.10.224 Trying 10.10.10.224... Connected to 10.10.10.224 (10.10.10.224). Escape character is '^]'. Connection closed by foreign host.
I've configured postfix on my linux server. For the most part, I got everything working (IMAP, apache, etc) but for some reason, I can't get postfix to work remotely. Postfix works locally to send mail. E.g. when I telnet locally to port 25. However, when I try to telnet from outside, the connection closes almost immediately. I've looked at various configuration options and tuning enhancements but found nothing helpful. Here is my config:
Code:
main.cf:
#See /usr/share/postfix/main.cf.dist for a commented, more complete version
# Debian specific: Specifying a file name will cause the first
# line of that file to be used as the name. The Debian default
[code]....
I'm using Postgresql 8.4.2-2. I'm trying to remote into my server securely. I figure I could do so with ssh. Apparently I figured correctly, as per, [URL] and [URL] I setup the ssh tunnel. ssh -L 5432:serverip:5432 Then I setup pgadmin3 to connect as follows:
host: localhost
port: 5432
user: postgres
maintenance db: postgres
And I receive the following error:
An error has occurred: Quote: An error has occurred: Error connecting to the server: server closed the connection unexpectedly This probably means the server terminated abnormally before or while processing the request.
I'm not sure what the problem is. I can connect with Code: psql from the cli after connecting to the terminal via ssh. So I know that I'm using the correct password.
i tried to connecting from a windows7 client to a linux server through vnc server.But its very slow , is there any alternative for vnc . i heard that samba can be used as a remote desktop tool if its true please reply with configuration details.
View 2 Replies View RelatedI just setup a server using Ubuntu 10.04LTS Desktop edition. I am a novice in these things. I was able to setup the SSH server and it works from outside my LAN quite well. I can telnet to it also with 22. I have then setup an email server. I can do telnet to it from the server itself but from the internet it just times out.
I did netstat -nlp and it shows that it is listening to port 25. I have port forwarding for 25 enabled on the router. I cleaned up all the rules of iptables and iptables -L shows everything is accepted.
I want to connect to my debian server through putty, but only i got is the message - Network error: connection refused. I try with different setting on the server and in putty, but there is no effect.
Here are my settings: for the serveer i use [URL]
Code:
Port 22
# listen address i changed to accept all addresses
ListenAddress 0.0.0.0
[code]....
i have no /etc/ssh/ssh_host_key file and try to comment it but with no success. All other lines at the config file was commented.
i am trying to run open-emr using these instructions: [URL] i get as far as step 3 where this screen never seems to connect to mysql:
Quote:
OpenEMR Setup
Step 3
Configuring OpenEMR...
Connecting to MySQL Server...
i think i have everything installed:
[Code].....
How to create a telnet server in ubuntu..?My students have unix Lab by next sem and so i would like to create telnet server so that they can access it from windows..
View 3 Replies View RelatedI would like to make a telnet connection to one server. I can't do this at first beceause i necesary to connect to another server. I use the program putty and this is the command to connect to my first machine:
[Code]....
I'm trying to test smtp connectivity to my postfix configuration and I can telnet to port 25 from the computer itself but cannot from the outside. I get a connection refused error message. What am I doing wrong? I believe my dns is setup correctly as it seems the telnet can hit the box so I'm fairly sure its not that.
View 14 Replies View RelatedIn a remote machine port 25 is open its enabled in firewall also...but not able to connect through telnet..why ?
netstat -an | grep 25
Code:
tcp 0 0 0.0.0.0:44525 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN
[code]....
Code:
telnet 172.17.65.206 25
Trying 172.17.65.206...
telnet: connect to address 172.17.65.206: No route to host
In my home we have got an internet connection which is connected to desktop machine having two network cards. One card is connected to external internet and second is used for internal LAN.
We have installed a proxy on desktop machine so that we can connect to internet through proxy. So we are not able to telnet to smtp.gmail.com 587 from laptops of internal LAN laptop installed with ubuntu and fedora.
At the same time we are able to ping smtp.gmail.com from the desktop machine which is exposed to internet.
I want to automate email through shell script using smtp.gmail.com.
I have been trying all day today to setup a sendmail SMTP server on our Red Hat 5.5 dev box. We have 2 network cards, 1 to the local network with a 192.168 prefix and an external card which goes out to the web through a BT leased line through a Cisco router.
First I followed one of the many helpful tutorials online to setup sendmail, installed all the required packages and made a couple of small config changes to allow the service to listen on all IP addresses rather than just the localhost 127.0.0.1.
The main change is in the /etc/mail/sendmail.mc file where I have changed the following line;
DAEMON_OPTIONS(`Port=smtp,Addr=x.x.x.x, Name=MTA')dnl
I have tried removing Addr completely, setting to either the local or external IP and then rebuilding the sendmail file using 'make -C /etc/mail' and then restarting using 'service sendmail restart'
The SMTP port has been added into the firewall and it is showing to be listening on IP 0.0.0.0:25 which I believe means it is listening on all IP's assigned to the machine, sendmail is also in listen mode and running correctly.
Finally I have changed the /etc/mail/access file to include the local IP range 192.168 and external IP range and rebuilt this into the /etc/mail/access.db file and then restarted sendmail.
Googling the error all the sites I have found talk about making sure the 'DAEMON_OPTIONS(`Port=smtp,Addr=x.x.x.x, Name=MTA')dnl' line is uncommented and not much else in terms of what else might be incorrect.
I am starting to run out of ideas on things to change or check, telnet works correctly on other ports on the same server, ie httpd for apache on port 80. I have also rebooted the server to make sure that it wasn't something odd happening.
how i will write my own telnet server instead of existing one.please give me the path for telnet.c file in the linux kernel
View 9 Replies View RelatedI am able to telnet localhost 143 and telnet ip 143 on localhost.but from outside network am not able to telnet ip 143.
View 2 Replies View RelatedI'm using something like telnet [URL] 25 and it comes back as not being able to connect to host on port 25. I don't have port 25 blocked anywhere. I turned off the firewall and even opened up port 25 on the hardware firewall router. If I ping it I can connect.
View 2 Replies View RelatedWhy am I not able to telnet to a Windows server machine? Is it because the telnet server is not running there? A remote desktop connection works though.
Does a telnet server run by default on a Unix machine?
I have a question about telnet.Is there any way to configure a telnet server without disable firewall.I am using redhat 5.2 and fedora 12.I have lack of knowledge about firewall.
View 1 Replies View RelatedIs it possible to restrict telnet connection from remote to my server(linux -centos5)?
=================
Ex : [root@localhost]# telnet 10.0.0.33 80
Trying 10.0.0.33...
[code]...
I seem to having some strange issues with my new sendmail server and was hoping that somebody can offer some assistance with this issue. I recently tried to setup an enviromental monitor that sends alerts via email using a dedicated email account I created on my sendmail server. For whatever reason, it does not seem to be able to send emails, and I have verified the account credentials multiple times.
So I attempted to run a telnet SMTP test to determine what the problem was. I was able to connect and send the emails using this test perfectly fine from my local subnet, however I ran into problems attempting this test from the outside world. When I connect the SMTP PORT 25 from the outside world, I get what seems to be a malformed SMTP greeting.
[Code]....
I googled it and found this information: To enable the telnet service, login to the server as the root user account and run the following commands:
Code:
# chkconfig telnet on
# service xinetd reload
but the very first command did not work.
So, how do we...
[1] start and stop telnet service on UNIX / Linux?
[2] specify configurations / settings for the telnet service to accept or deny connections
I have two servers running Linux 2.6.9 kernel.When i telnet to server1 , the telnet will be disconnected only after 3 login failures. While, when i telnet to server2, telnet will be disconnected after the first login failure.expect server2 to behave the same way as server1 when telnet is executed.Kindly tell me where i should tweak my servers so that i could achieve what i expect.
View 1 Replies View Relatedfind and install EXPECT package in RHEL5 to TELNET servers.
View 2 Replies View RelatedI've a Windows 7 host OS and I've installed Fedora 11 as a Virtual OS using Virtualbox.I want a friend of mine to connect to my Fedora server using telnet from internet. What I would like to know is how do i configure my Virtualbox to allow my friend to connect to my server. Also, is there any setting I need to change in Fedora to allow this?
View 9 Replies View Relatedi am trying to write a telnet server without username/password function. how to implement such function? the source code from inetutils seems complicated..
View 8 Replies View RelatedI wanted to set up a secure FTP server with proftpd so I can put some large files on the web for my pops. Here is my problem, I use a clearwire modem that won't allow you to change any of the settings but appears to have some pre-set firewalling capabilities. I also have a linksys wireless router connected to the modem. That firewall has all the port forwarding settings ready to go, and there hasn't been an issue with anything else, so here it goes.
I have a properly configured secure FTP setup with proftpd and the client app I'm using is Filezilla. I know it is configured right because I was able to use the FTP server via my LAN. Maybe my logic is wrong but, I was connecting to the FTP server at it's IP on the LAN of 192.168.1.5:21. If I wanted my pops to connect from out of state I would give him the ip the internet sees when I surf the web, right? Looks something like this 68.44.22.113. I should tell him to configure Filezilla to connect to 68.44.22.113:21. If my logic is wrong, please let me know, because when I try to do this I get an error that says connection refused by host.
I am able to telnet to the server via a remote connection, but for some reason, it will not accept mail. ere is the bounce back email I am getting.Quote:This is the mail system at host smtp.mydomain.net.I'm sorry to have to inform you that your message could notbe delivered to one or more recipients. It's attached below.For further assistance, please send mail to postmaster.If you do so, please include this problem report. You candelete your own text from the attached returned message.The mail system
<root@mydomain.net>: temporary failure. Command output: pipe: fatal: pipe_command:
execvp /usr/bin/perlbin/vendor/spamc: No such file or directory
Reporting-MTA: dns; smtp.mydomain.net
[code]....
how to enable and disable these services: FTP,Email,Web server,Firewall,Telnet,LAN? Is there any general way to manage services?
View 1 Replies View RelatedHow to communicate with an SMTP server with telnet, in order to send a mail?
telnet smtp.something.somewhere 53 Trying
10.xxx.xxx.xxx...
Connected to smtp.something.somewhere.
Escape character is '^]'.
And that is as far as I got. What do I have to do after?
What do I have to write after "HELO"?
finally i found the script for telnet automated login session...<<Mod edit: questionable link removed>>
View 4 Replies View Related