I have a problem, a thing i havent really understood. Why use two NICs in once machine ? Is it more secure ? Because with ifconfig and route you can add up to four ips if im not mistaken on every card.. So why have two cards ? Sniffing the card is just avaible if the card is in promisc mode and that will be as much trouble if you have two cards in promisc mode.. right ? -- Johan __________________________________________________ Do You Yahoo!? Yahoo! Mail - Free email you can access from anywhere! http://mail.yahoo.com/ -- To unsubscribe send e-mail to suse-linux-e-unsubscribe@suse.com For additional commands send e-mail to suse-linux-e-help@suse.com Also check the FAQ at http://www.suse.com/support/faq
On Wed, 6 Sep 2000 23:58:55 -0700 (PDT), Johan wrote: | I have a problem, a thing i havent really understood. | Why use two NICs in once machine ? It is rather obvious. The 3 most on-the-top-of-my-head reasons: 1. You need to be connected to 2 physical, seperate lan's/networks 2. Besides the 10Mb standard interface you need a connection to the 100Mb backbone. You end up with a 10Mb nic and a 100Mb nic. 3. You want to run services (e.g. webservers) on a virtual host Cheers, Koos Pol ---------------------------------------------------------------------- S.C. Pol T: +31 20 3116122 Systems Administrator F: +31 20 3116200 Compuware Europe B.V. E: koos_pol@nl.compuware.com Amsterdam PGP public key available -- To unsubscribe send e-mail to suse-linux-e-unsubscribe@suse.com For additional commands send e-mail to suse-linux-e-help@suse.com Also check the FAQ at http://www.suse.com/support/faq
On 7 Sep 2000, at 9:40, Koos Pol wrote:
On Wed, 6 Sep 2000 23:58:55 -0700 (PDT), Johan wrote:
| I have a problem, a thing i havent really understood. | Why use two NICs in once machine ?
It is rather obvious. The 3 most on-the-top-of-my-head reasons: 1. You need to be connected to 2 physical, seperate lan's/networks 2. Besides the 10Mb standard interface you need a connection to the 100Mb backbone. You end up with a 10Mb nic and a 100Mb nic. 3. You want to run services (e.g. webservers) on a virtual host
Just to elaborate on Koos' 3. If you have a home network and either a cable modem or DSL, you can set up your system with 2 NICS, one dedicated to the cable modem and the other for your home network. You would then use IP Masquerading such that other systems on your home network can use the Internet. WRT: #3, if you are virtually hosting, you can alias ip addresses on a single physical interface as per this example: eth0:192.168.0.73 eth0:0 192.168.0.1 Another more complicated reason is if you are running multiple subnets in an installation. One or more servers can be physically connected to these multiple nets. This keeps a lot of traffic localized to each subnet. -- Jerry Feldman Contractor, eInfrastructure Partner Engineering 508-467-4315 http://www.testdrive.compaq.com/linux/ Compaq Computer Corp. 200 Forest Street MRO1-3/F1 Marlboro, Ma. 01752 -- To unsubscribe send e-mail to suse-linux-e-unsubscribe@suse.com For additional commands send e-mail to suse-linux-e-help@suse.com Also check the FAQ at http://www.suse.com/support/faq
participants (3)
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gerry.feldman＠compaq.com -
johan_82＠yahoo.com -
koos_pol＠nl.compuware.com