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Old 04-18-2002, 01:37 AM   #1
aruna13
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Unable to ftp/telnet from ouside(internet) to my home network


I am totally new to linux, so please help me out.

I am unable to get telnet and wu-ftp to work on redhat linux 7.2. I am trying to set-up my

own personal network at home. I have DSL connection with linksys router. I have installed

Redhat linux 7.2 on one of my boxes connected to the router. I have turned on the

"Forwarding" ports option of the router for telnet and ftp ports for my ip address.

When I try to ftp from outside to my linux host, and I do a "ps -ef | grep telnet" on my

linux box, I see the telnet connection. But, the telnet actually does not go thro. I would

really appreciate if someone can tell me what I am doing wrong. I can access the internet

outside using telnet/ftp/http from inside my network, but I am unable to come inside from

outside.
 
Old 04-18-2002, 05:10 AM   #2
Mik
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Have you checked:

- the services are actually running (ps)
- the services are actually listening on the right port (netstat -l)
- firewall rules on your linux machine
- restriction rules for the service in the xinetd directory
- restriction rules in /etc/hosts.allow and /etc/host.deny
 
Old 04-18-2002, 08:14 AM   #3
trickykid
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also did you enable the port forwarding to the specific IP address for your linksys router.. ??
 
Old 04-18-2002, 10:17 AM   #4
Mik
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Quote:
Originally posted by aruna13
I have turned on the "Forwarding" ports option of the router for telnet and ftp ports for my ip address.
Trickykid, I purposely left that one out.
 
Old 04-18-2002, 11:08 AM   #5
trickykid
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oops.. maybe i should read more closely then. it is strange though it works on his internal network but can't do it from outside his network.. got to be something with the router.

Last edited by trickykid; 04-18-2002 at 11:12 AM.
 
Old 04-18-2002, 02:39 PM   #6
Syncrm
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with the linksys router, i'm fairly certain that when you lease an IP from the router's DHCP server, it can't forward ports since the DHCP is on (don't know why that is). so turn off the DHCP server for your router, and just assign everything statically. this is how i used to set my tcp/ip settings when i had my linksys with port forwarding enabled:

IP: 192.168.1.50
Subnet: 255.255.255.0
Gateway: 192.168.1.1
DNS: whatever your isp uses

and then have the router point specific ports to specific machines.

hope this helps. :-)
 
Old 04-18-2002, 02:41 PM   #7
Syncrm
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oh yeah... and make sure to add the gateway to your routes, since when you set static tcp/ip settings it doesn't add the default gateway to your route tables.

route -n to check.
 
Old 04-20-2002, 02:38 PM   #8
Savedadogs
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I had a similar problem with RedHat 7.2. I also have a Linksys Router. By default, RedHat activates the linux firewall. Turn it off with lokkit.

http://www.linuxquestions.org/questi...light=firewall
 
  


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