Linux - SecurityThis forum is for all security related questions.
Questions, tips, system compromises, firewalls, etc. are all included here.
Welcome to LinuxQuestions.org, a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
hi i have 3 computers at home lets name it pc1, pc2 and pc3
in pc1 im using win2k in pc2 and pc3 are both rh9. i can
access pc2 via ssh and telnet but i cant access pc3 via
ssh and telnet i already setup the firewall to accept
ssh and telnet like i did in pc2 but still i cant access it
im just wondering if im missing some points thank you for
Distribution: Ubuntu, Debian, Various using VMWare
Is the SSH server running on PC3?
Make sure you install it.
On a side note, is there any particular reason for using RH9? This is a very old version of Linux, having been released in 2003. It is no longer supported, and does not get any security updates. The successor to Redhat Community is Fedora, which is currently at release 6. Alternatively, try Centos (Free RHEL) or Ubuntu.
Also, Telnet is extremely insecure - everything including passwords are transmitted in plain text. SSH encrypts everything. Don't use Telnet unless you really must.
yes i know redhat is very old maybe ill use fedora or rh enterprise
someday but for now ill use my rh box. i also know that telnet is
insecure i just want to learn thats all that is the reason i want
to run telnet thanks for the concern iball. slzckboy what do you
mean basic network connectivity? if you are asking about the
physical connections there are no problems i can ping pc1 pc2 and
pc3. i tried accessing pc2 using pc3 via ssh and i successfully
accessed it i also tried to logon pc3 using ssh in itself i also
never encountered a problem.thanks for the help guys maybe ill
update you for more information. everytime i access pc3 using pc2
via ssh it gives me an error message that the host refused to
connect i also ran tcpdump and it gave me this message
04:54:22.045192 192.0.0.1.3826 > 192.0.0.3.ssh: S [tcp sum ok] 3399189136:3399189136(0) win 16384 <mss 1460,nop,nop,sackOK> (DF) (ttl 128, id 11751, len 48)
04:54:25.000684 192.0.0.1.3826 > 192.0.0.3.ssh: S [tcp sum ok] 3399189136:3399189136(0) win 16384 <mss 1460,nop,nop,sackOK> (DF) (ttl 128, id 11752, len 48)