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On Sun, 4 Mar 2007, Bob Young wrote: |
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> This isn't strictly a Gentoo question, but I'm setting up Gentoo box |
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> to be used as a secondary DNS server, plus some other duties, and I'm |
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> hoping there is a DNS wizard reading who can authoritatively answer my |
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> question. |
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> |
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> First off the machine has three network cards, one with a (DHCP) |
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> private IP (10.10.32.1) for talking to the local (Windows Domain) LAN. |
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> A second NIC with a (Manually configured) IP address (69.12.134.79) |
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> that is publicly registered (ns.debug1.com) as a secondary DNS for |
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> several domains. And the third NIC has a (Manually configured) private |
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> IP address (192.168.0.1) that will be used to "sniff" all traffic that |
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> crosses the DSL modem. |
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> |
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> Obviously on a given system each NIC is usually connected to a |
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> different domain, my question is, whether or not it |
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> is /legal/possible/okay to use different *hostnames* on different |
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> NICs? |
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> |
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> For example, in the scenario described above, assume the windows |
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> domain is named "mydomain.lan," can I have 69.12.134.79 (NIC #2) |
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> resolve to ns.debug1.com as that is it's publicly registered name, |
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> while IP address 10.10.32.1 (NIC #1) resolves to gentoo.mydomain.lan? |
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Given that 2 of your IP addresses are in RFC 1918 private IP space, it |
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is a good thing not to have your public DNS name resolve to those IP |
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addresses, as they should not be routable, and may be in use at amny |
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other sites (and thus could resolve to a local address at those sites). |
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Having multiple domain names, each pointing to a separate interface on |
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one machine is certainly within the rules for DNS, and is very |
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effective in certain situations. Some services (email especially) may |
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need to be configured with a list of "these DNS names are also the |
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local server" to operate correctly, but this should not be a huge |
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burden. |
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-- |
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Reverend Paul Colquhoun, ULC. http://andor.dropbear.id.au/~paulcol |
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Asking for technical help in newsgroups? Read this first: |
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http://catb.org/~esr/faqs/smart-questions.html#intro |
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-- |
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gentoo-user@g.o mailing list |
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