Hi there everyone
this has been really frustrating, I have been googling online and haven't found a solution yet.
I am using a Verizon DSL modem and have my Fedora 4 machine connected to a hub that is directly connected to the modem. I have no firewall on my Fedora 4 and I have checked the iptables and Security Level from Systems Settings. There should not be any port restrictions on the hub(a physical layer device, not a router) and the DSL modem.
Thus, I do not know understand why I can ssh locally with "ssh localhost" but cannot from any other external machine. I have gone to a site like www.whatismyip.com
to figure out my external IP and that does not work. When I ssh to that IP, I keep getting port 22 Connection refused.
I only have one network interface on my Fedora 4, and when I do ifconfig eth0, I get :
inet addr:192.168.1.45 Bcast:255.255.255.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:28790 errors:0 dropped:0 overruns:0 frame:0
TX packets:32197 errors:0 dropped:0 overruns:0 carrier:0
RX bytes:8862981 (8.4 MiB) TX bytes:3830715 (3.6 MiB)
Interrupt:10 Base address:0x8000
and the inet addr here does not match that of the external IP.
When I do "nmap localhost" I get:
Interesting ports on localhost.localdomain (127.0.0.1):
(The 1659 ports scanned but not shown below are in state: closed)
PORT STATE SERVICE
22/tcp open ssh
25/tcp open smtp
111/tcp open rpcbind
631/tcp open ipp
Nmap finished: 1 IP address (1 host up) scanned in 1.043 seconds
HOWEVER, when I do "nmap (my external IP)" I get :
All 1663 scanned ports on (external IP) are: closed
Nmap finished: 1 IP address (1 host up) scanned in 1.083 seconds
So does this mean there is still some problems with the Fedora 4 or is there some form of restriction on the DSL modem? I have tried to plug the Fedora machine directly to the modem and the same thing happens. By the way, I just installed Fedora 4 brand new on this machine.
Please share your thoughts, thanks in advance!