Solved

SCO Openserver wont allow Telnet from public IP's?

Posted on 2006-06-12
4
553 Views
Last Modified: 2013-12-27
Guys,
Ive got a SCO openserver (3.2) that will allow access by telnet to anyone on the LAN but when I forward in telnet (temporary) from the firewall it rejects the connection attempts.  From the client it just times out. I presume the previous admin had this blocked for good reason, however we need to change it temporarily.  any help would be greatly appreciated. I am much more a windows admin then unix.
0
Comment
Question by:Poudrecomputer
  • 2
4 Comments
 
LVL 6

Expert Comment

by:dotENG
ID: 17040478
This is the OS/2 channel, you should post your question in:
http://www.experts-exchange.com/Operating_Systems/Unix/

Anyway, this looks like a firewall/routing/netmask problem.
Try running "netstat –rn" to get your network configuration.
0
 

Author Comment

by:Poudrecomputer
ID: 17043700
dotENG,
Yah i noticed i somehow posted to the wrong spot.. anyways... heres the results from hyperterm
---------------------------------------
netstat -rn
Routing tables
Destination           Gateway             Flags    Refs        Use      Interface
127.0.0.1             127.0.0.1             UH          3      262382        lo0
192.168               192.168.0.100      UC          1        0              net0
192.168.0.100      127.0.0.1            UGHS      163      833           lo0
224                     192.168.0.100      UCS         0        0              net0
root#
---------------------------------------

I appreciate any help! : )
0
 
LVL 6

Accepted Solution

by:
dotENG earned 500 total points
ID: 17046114
Most likely your netmask is incorrect, to be sure do a "cat /etc/tcp" and check for something that looks like NETMASK=255.255.0.0
If so, edit the /etc/tcp file to NETMASK=255.255.255.0 and add GATEWAY=IP_ADDRESS_OF_FIREWALL.

All this is correct if your network uses Class C netmask (254 addresses from 192.168.0.1 to 192.168.0.254), if your network uses Class B netmask (65534 addresses from 192.168.0.1 to 192.168.255.254) then don't change the mask.

I don't know if it's possible to restart networking in SCO like Linux (/etc/init.d/network restart), so if it's possible, restart the server.
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
LINUX ZIP - UNCOMPRESS WINDOWS PATH 3 88
Bash Script to Analyze Oracle Schemas 11 85
Linux hostname change 2 56
Near realtime alert if SQL Server services stop. 20 57
Just about everyone has an old PC laying around.  Ask anyone in the IT industry, whether they are a professional or play in it as a hobby.  From outdated Desktops to cheap "throwaway" laptops, they are all around and not as hard to "fix up" as you m…
FreeBSD on EC2 FreeBSD (https://www.freebsd.org) is a robust Unix-like operating system that has been around for many years. FreeBSD is available on Amazon EC2 through Amazon Machine Images (AMIs) provided by FreeBSD developer and security office…
Learn how to get help with Linux/Unix bash shell commands. Use help to read help documents for built in bash shell commands.: Use man to interface with the online reference manuals for shell commands.: Use man to search man pages for unknown command…
This is used to tweak the memory usage for your computer, it is used for servers more so than workstations but just be careful editing registry settings as it may cause irreversible results. I hold no responsibility for anything you do to the regist…

863 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

Need Help in Real-Time?

Connect with top rated Experts

27 Experts available now in Live!

Get 1:1 Help Now