Two NICs And Two Separate Networks?

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Two NICs And Two Separate Networks?

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Two NICs And Two Separate Networks?

Postby bendoney » Wed, 18 Feb 2004 07:20:13 GMT 

Question about a proposed office network.... All Windows XP systems


Network 1:
 Cable Modem ---> Router / Firewall ---> 3Com Hub ---> NIC #1 In
Machine (TCP/IP & DHCP)

Network 2:
 3Com Switch  ---> NIC #2 In Machine (IPX/SPX & Set IP Address)

I was told running a different protocol such as IPX/SPX on the second
network would make it more secure, is this true?

I understand that the PC's still are connected to the internet on
network 1 but wouldn't it be more secure since network 2 isn't
directly connected to the internet and in order to access network 2 a
hacker would have to go through the firewall and then though the
machine?


The server will be on network 2 and will not need internet access. 
One would think that since it is on a separate network it would be
more secure than being connected directly to network #1

Any ideas?
Top

Re: Two NICs And Two Separate Networks?

Postby S.S.I.N. » Wed, 18 Feb 2004 08:22:33 GMT 

i can't see it being much more secure.
the router should be all the protection you need.
hacking routers is only done by the very top hackers who don't have time to
waste on you.

they are too busy getting paid by huge company's
to try to hack their systems looking for security problems..
Top

Re: Two NICs And Two Separate Networks?

Postby Butterfield » Wed, 18 Feb 2004 21:01:41 GMT 




If your network is unsecured and you have both protocols then one
doesn't make the other more secure. ipx would only ever be needed on
an internal network (for a reason). You only need tcp/ip and a good
firewall.

Gotta go...
Butterfield
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Re: Two NICs And Two Separate Networks?

Postby Roy Collingwood » Tue, 24 Feb 2004 02:17:28 GMT 

tcp/ip on both networks would be better.
so long as you dont 'bridge' the nic's then it should be secure

roy

-- 
Dancing is a perpendicular expression of a horizontal desire.
Come visit me www.roycollingwood.co.uk
Top

Similar Threads:

1.Two NICs & Two Separate Networks? 

Question about a proposed office network.... All Windows XP systems


Network 1:
 Cable Modem ---> Router / Firewall ---> 3Com Hub ---> NIC #1 In
Machine (TCP/IP & DHCP)

Network 2:
 3Com Switch  ---> NIC #2 In Machine (IPX/SPX & Set IP Address)

I was told running a different protocol such as IPX/SPX on the second
network would make it more secure, is this true?

I understand that the PC's still are connected to the internet on
network 1 but wouldn't it be more secure since network 2 isn't
directly connected to the internet and in order to access network 2 a
hacker would have to go through the firewall and then though the
machine?


The server will be on network 2 and will not need internet access. 
One would think that since it is on a separate network it would be
more secure than being connected directly to network #1

Any ideas?

2.Is it possible two have two separate "IE profiles" - to get two separate cookies 

Hello all,
We have an Single Signon-enabled application that allows 
one browser session at a time.  If another session is open 
(through New Window function), the first session may 
loses "state" when user toggles back to it.  Is there a 
way to differentiate these browser sessions (log into the 
SSO-enabled application separately but on same machine) - 
the idea is to have two different cookies, hence two 
different states.  

Appreciate any thoughts on this.  This works if I use 
Mozilla.
Thanks,
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3.two network cards and two separate networks 

I have two NIC, one connected to our university network, one on a 100.1.1.* 
internal network. I want to configure the cards such that requests to the 
100.1.1.* network will only be processed by one nic and all other requests 
are send to the other nic. And now the question: How can I do this????
BTW I am working with Windows XP SP2 and two Broadcom NetXtreme Gigabit 
Ehternet cards.

Thanks a lot for your kind help.

Bernd

4.two dsl connections, two routers, dual nics on linux box , want to run two websites 

Hello,

I have two dsl connections, with one public ip on each. I have a linux
box with two nic cards.

xx.xx.xx.xx(WAN)---ROUTER(LAN23.123.45.110) ---- MYLINUX
(23.123.45.107) eth1
yy.yy.yy.yy(WAN)---ROUTER(LAN192.182.1.1)   ---- MYLINUX
(192.168.1.100) eth0

I have apache listening on both interfaces. 

Problem:

1. How do I make the packets route back to the gateway from which they
originate.

Currently the gateway marked as "default" is able to serve content
from the apache. The other one cannot.

I tried adding static routes, but that didn't work.

Any help is appreciated.

Thanks
Jay

---------------------------------------------------------------------
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref   
Use Iface
adsl-23-123-45- adsl-23-123-45- 255.255.255.255 UGH   0      0       
0 eth1
23.123.45.0     *               255.255.255.0   U     0      0       
0 eth1
192.168.1.0     *               255.255.255.0   U     0      0       
0 eth0
loopback        *               255.0.0.0       U     0      0       
0 lo
default         192.168.1.1     0.0.0.0         UG    1      0       
0 eth0


eth0      Link encap:Ethernet  HWaddr 00:0D:87:57:A0:DE
          inet addr:192.168.1.100  Bcast:192.168.1.255 
Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:3060612 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3577217 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          RX bytes:1566982235 (1494.3 Mb)  TX bytes:1126616733 (1074.4
Mb)
          Interrupt:11 Base address:0xe000

eth1      Link encap:Ethernet  HWaddr 00:40:05:39:0E:EA
          inet addr:23.123.45.107  Bcast:68.123.24.255 
Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:90635 errors:0 dropped:0 overruns:0 frame:0
          TX packets:31082 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          RX bytes:23017102 (21.9 Mb)  TX bytes:13283751 (12.6 Mb)
          Interrupt:11 Base address:0xe000

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:11888 errors:0 dropped:0 overruns:0 frame:0
          TX packets:11888 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:6920794 (6.6 Mb)  TX bytes:6920794 (6.6 Mb)

5.two nics - two networks 

I have a windows 2003 server with one nic (192.168.100.x).  We just 
purchased a second company that's in our building.  Can I add a second nic 
and configure it to there network ip scheme (192.168.25.x) so that I can 
share one server?  I want to share the server, just not the information on 
the server.  Will either of the networks be able to one another if I don't 
bridge the networks cards?  Thanks for any help you can provide.

A

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