Configuring NIC's on a Firewall
Jose J. Gutierrez
yellowdog-general@lists.terrasoftsolutions.com
Fri Nov 8 09:17:01 2002
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Hi everybody,
I have a problem, I'm configuring a Firewall on a Yellow Dog Linux 2.0 =
box and my network have these caracteristics:
- My External Firewall NIC IP: 148.202.41.1
- External Gateway IP: 148.202.41.254
- My Internal Firewall NIC IP: 90.0.0.1
- My Internal Net: 90.0.0.0
At this point I'm able to see the external Net (ex. 148.202.41.1 to =
148.202.41.253) but I can't see (ping) any IP in another subnet (ex. =
148.202.1.29). I think that probably the firewall is not able to find =
the gateway to go to another networks. Probably I'm not configuring =
correctly my Firewall NICs. This is the configuration information for my =
Firewall NIC's:
External
- IP: 148.202.41.1
- DNS: 148.202.1.29 and 148.202.3.5
- Gateway: 148.202.41.254
Internal
- IP: 90.0.0.1
- DNS: The Linux system automatically set the same that for the External =
NIC
- Gateway: Linux system automatically set the same that for the External =
NIC
Internal Clients
- IP: 90.0.0.2 to 90.0.0.254
- DNS: 90.0.0.2 (also try with 148.202.1.29)
- Gateway: 90.0.0.1
Hope somebody can help me.
Please let me know if you need more information
Thanks in advance for your help.
Saludos!!!
~~~~~~~~~~~~~~~~~~~~~~~
Jose de Jesus Gutierrez
E-mail: jjesusgm@yahoo.com.mx
E-mail: jjesusgm@hotmail.com
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<DIV><STRONG><FONT face=3DArial color=3D#000080 size=3D2>Hi=20
everybody,</FONT></STRONG></DIV>
<DIV><STRONG><FONT face=3DArial color=3D#000080 size=3D2>I have a =
problem, I'm=20
configuring a Firewall on a Yellow Dog Linux 2.0 box and my network have =
these=20
caracteristics:</FONT></STRONG></DIV>
<DIV><STRONG><FONT face=3DArial color=3D#000080 =
size=3D2></FONT></STRONG> </DIV>
<DIV><STRONG><FONT face=3DArial color=3D#000080 size=3D2>- My External =
Firewall NIC=20
IP: 148.202.41.1</FONT></STRONG></DIV>
<DIV><STRONG><FONT face=3DArial color=3D#000080 size=3D2>- External =
Gateway IP:=20
148.202.41.254</FONT></STRONG></DIV>
<DIV><STRONG><FONT face=3DArial color=3D#000080 size=3D2>- My Internal =
Firewall NIC=20
IP: 90.0.0.1</FONT></STRONG></DIV>
<DIV><STRONG><FONT face=3DArial color=3D#000080 size=3D2>- My Internal =
Net:=20
90.0.0.0</FONT></STRONG></DIV>
<DIV><STRONG><FONT face=3DArial color=3D#000080 =
size=3D2></FONT></STRONG> </DIV>
<DIV><STRONG><FONT face=3DArial color=3D#000080 size=3D2>At this point =
I'm able to see=20
the external Net (ex. 148.202.41.1 to 148.202.41.253) but I can't =
see=20
(ping) any IP in another subnet (ex. 148.202.1.29). I think that =
probably the=20
firewall is not able to find the gateway to go to another networks. =
Probably I'm=20
not configuring correctly my Firewall NICs. This is the configuration=20
information for my Firewall NIC's:</FONT></STRONG></DIV>
<DIV><STRONG><FONT face=3DArial color=3D#000080 =
size=3D2></FONT></STRONG> </DIV>
<DIV><STRONG><FONT face=3DArial color=3D#000080=20
size=3D2>External</FONT></STRONG></DIV>
<DIV><STRONG><FONT face=3DArial color=3D#000080 size=3D2>- IP:=20
148.202.41.1</FONT></STRONG></DIV>
<DIV><STRONG><FONT face=3DArial color=3D#000080 size=3D2>- DNS: =
148.202.1.29 and=20
148.202.3.5</FONT></STRONG></DIV>
<DIV><STRONG><FONT face=3DArial color=3D#000080 size=3D2>- Gateway:=20
148.202.41.254</FONT></STRONG></DIV>
<DIV><STRONG><FONT face=3DArial color=3D#000080 =
size=3D2></FONT></STRONG> </DIV>
<DIV><STRONG><FONT face=3DArial color=3D#000080=20
size=3D2>Internal</FONT></STRONG></DIV>
<DIV><STRONG><FONT face=3DArial color=3D#000080 size=3D2>- IP:=20
90.0.0.1</FONT></STRONG></DIV>
<DIV><STRONG><FONT face=3DArial color=3D#000080 size=3D2>- DNS: The =
Linux system=20
automatically set the same that for the External =
NIC</FONT></STRONG></DIV>
<DIV><STRONG><FONT face=3DArial color=3D#000080 size=3D2>- Gateway: =
Linux system=20
automatically set the same that for the External =
NIC</FONT></STRONG></DIV>
<DIV><STRONG><FONT face=3DArial color=3D#000080 =
size=3D2></FONT></STRONG> </DIV>
<DIV><STRONG><FONT face=3DArial color=3D#000080 size=3D2>Internal=20
Clients</FONT></STRONG></DIV>
<DIV><STRONG><FONT face=3DArial color=3D#000080 size=3D2>- IP: 90.0.0.2 =
to=20
90.0.0.254</FONT></STRONG></DIV>
<DIV><STRONG><FONT face=3DArial color=3D#000080 size=3D2>- DNS: 90.0.0.2 =
(also try=20
with 148.202.1.29)</FONT></STRONG></DIV>
<DIV><STRONG><FONT face=3DArial color=3D#000080 size=3D2>- Gateway:=20
90.0.0.1</FONT></STRONG></DIV>
<DIV><STRONG><FONT face=3DArial color=3D#000080 =
size=3D2></FONT></STRONG> </DIV>
<DIV><STRONG><FONT face=3DArial color=3D#000080 size=3D2>Hope somebody =
can help=20
me.</FONT></STRONG></DIV>
<DIV><STRONG><FONT face=3DArial color=3D#000080 size=3D2>Please let me =
know if you=20
need more information</FONT></STRONG></DIV>
<DIV><STRONG><FONT face=3DArial color=3D#000080 =
size=3D2></FONT></STRONG> </DIV>
<DIV><STRONG><FONT face=3DArial color=3D#000080 size=3D2>Thanks in =
advance for your=20
help.</FONT></STRONG></DIV>
<DIV><STRONG><FONT face=3DArial color=3D#000080 =
size=3D2></FONT></STRONG> </DIV>
<DIV><STRONG><FONT face=3DArial color=3D#000080=20
size=3D2>Saludos!!!<BR>~~~~~~~~~~~~~~~~~~~~~~~<BR>Jose de Jesus=20
Gutierrez<BR>E-mail: <A=20
href=3D"mailto:jjesusgm@yahoo.com.mx">jjesusgm@yahoo.com.mx</A><BR>E-mail=
: <A=20
href=3D"mailto:jjesusgm@hotmail.com">jjesusgm@hotmail.com</A></FONT></STR=
ONG></DIV></BODY></HTML>
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