Solved

Strange Networking problem

Posted on 2002-06-05
6
229 Views
Last Modified: 2010-08-05
I am using a linux box as a server on my network having win95/98 nodes. Services in use are smb file server (with domain logon), web server, mail server, squid proxy server, dhcp server. Telnet also works fine here.

Every thing works fine here. Now i want to shift this Linux box to another similar setup.

After shifting, I am able to log on to smb file server, use the dhcpd server without any problem. But the web server, mailserver and squid proxy services are not available.

I am able to ping but I am not able to telnet. Can some one help me out. This is not an isolated problem but none of the machines in the new setup are able to able to use the proxy or mail.
0
Comment
Question by:kathotia
6 Comments
 
LVL 3

Expert Comment

by:cincin77
ID: 7056617
This may be an address resolution problem. Check if the machine you are telnetting from can be resolved to its DNS name. Some services on Linux do not accept conections if it cannot resolve the IP address trying to connect to its name. You can add those IP addresses to your hosts file.

You can check /var/log/messages on your Linux machine for these errors.
0
 
LVL 15

Accepted Solution

by:
samri earned 200 total points
ID: 7072320
kathotia,

What Linux distribution that you are using; RedHat ??, Debian, etc. etc.  And during the installation of the OS (Linux), did you went thru the firewall setup and configure the ports for web, mail, and squid.

One possibility to test, is to try on the Linux box itself, and try to establist connection to "127.0.0.1".

TO enable such services, you need to run the firewall-config, and allow such ports;  By default smtp - 25/TCP, POP - 110/TCP, web - 80/TCP, squid - 3128 - TCP, telnet - 21/TCP.

And I would assume that FTP is also not working.


please feedback.
0
 
LVL 15

Expert Comment

by:samri
ID: 7072362
kathotia,

thank's for the "C" :)

I would be more interested to know whether any of the "hints" actually true; Before any of us could proceed further to help you solve the problem.  Rather proposing a complete solution that is totally "off" the track.

cheers.

0
VMware Disaster Recovery and Data Protection

In this expert guide, you’ll learn about the components of a Modern Data Center. You will use cases for the value-added capabilities of Veeam®, including combining backup and replication for VMware disaster recovery and using replication for data center migration.

 

Expert Comment

by:ComTech
ID: 7073522
As Admin here, I do not see anything wrong that would require under the stadards that is the result of a C grade, therefore I shall change it, especially when the grade given probably was not tried at the time of acceptance.

Regards,
ComTech
CS Admin @ EE
0
 
LVL 1

Author Comment

by:kathotia
ID: 7074790
samri

your comments hepled me to solve my problem. 'C' was given because the comment was not actually the solution, but it only helped me locate the problems and solve it, actually the service xinetd was switched off due to some unforseen reasons. after reading your comments i discovered the fault and rectified it. hence the grade 'c'
0
 
LVL 15

Expert Comment

by:samri
ID: 7096496
kathoria,

Hmm... anyhow, at least post something for "PAQ" lurkers out there. At least we all could have benefit from your findings.
0

Featured Post

Microsoft Certification Exam 74-409

Veeam® is happy to provide the Microsoft community with a study guide prepared by MVP and MCT, Orin Thomas. This guide will take you through each of the exam objectives, helping you to prepare for and pass the examination.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

I have seen several blogs and forum entries elsewhere state that because NTFS volumes do not support linux ownership or permissions, they cannot be used for anonymous ftp upload through the vsftpd program.   IT can be done and here's how to get i…
Note: for this to work properly you need to use a Cross-Over network cable. 1. Connect both servers S1 and S2 on the second network slots respectively. Note that you can use the 1st slots but usually these would be occupied by the Service Provide…
Two types of users will appreciate AOMEI Backupper Pro: 1 - Those with PCIe drives (and haven't found cloning software that works on them). 2 - Those who want a fast clone of their boot drive (no re-boots needed) and it can clone your drive wh…
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…

770 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question