[geeks] setting up modem/router for sshd

William S. wstan at xs4all.nl
Mon May 13 12:41:47 CDT 2002


I am currently connected to the internet via an
ISDN/ADSL Alcatel modem. It is currently acting as
a router (gateway '10.0.0.138') for my single pc
(10.0.0.150). I also have a static ip address
which is (213.84.66.123).

I would like to set up sshd on my pc so that I can
log into it from the outside. The only problem I seem
to have is that any attempts to log into 213.84.66.123
with ssh goes to my router/modem, not the pc with sshd
running. I kinda verified this using telnet 213... :
was directed to the modem/router.

I guess what I need to do is make the proper entry(s)
in my ip address/route table so that packets sent to
213.84.66.123 port 22 go to my pc, not the modem.

Below is a copy of my tables that are programmed into the
modem. I can change the entries via a web interface.
Can anyone tell me what I need to change to make it
work?

---IP address table---

Intf  Address       Netmask        Type  Transl
  
MXS   213.84.66.123 255.255.255.0  Auto  pat 
eth0  10.0.0.138    255.0.0.0      Extra none 
cip0  172.16.1.1    255.255.255.0  CIP   none 
loop  127.0.0.1     255.0.0.0      Auto  none 

---IP route table---

Destination        Source       Gateway       Intf  

10.0.0.0/8         10.0.0.0/8   10.0.0.138    eth0 
213.84.66.123/32   any          213.84.66.123 MXS 
255.255.255.255/32 any          10.0.0.138    eth0 
10.0.0.138/32      any          10.0.0.138    eth0 
172.16.1.1/32      any          172.16.1.1    cip0 
127.0.0.1/32       any          127.0.0.1     loop 
172.16.1.0/24      any          172.16.1.1    cip0 
10.0.0.0/8         any          10.0.0.138    eth0 
default            10.0.0.150/0 213.84.66.123 MXS 

-- 
Bill
Amsterdam, NL



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