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mRyOuNg schrieb: |
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> Andreas Herrmann wrote: |
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>> Hi there, |
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>> |
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>> I want to setup a gateway / firewall solution with Gentoo. The network |
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>> has following structure: |
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>> |
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>> Several host (host[1,...,x].domain.net) are defined within the DNS and |
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>> all of them have the same A-Record with the IP 1.2.3.4 |
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>> The gateway is listening on its external network interface with the IP |
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>> 1.2.3.4 and has an internal interface with a private subnet |
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>> (192.168.0.0/24). The hosts (host[1,...,x].) are addressed in this |
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>> subnet. |
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>> |
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>> How can it be solved, that the gateway opens a tunnel to the special |
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>> host in the private subnet (let.s say 192.168.0.3) if there is a query |
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>> for host3.domain.net? |
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>> |
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>> In my opinion this cannot be done because the client queries the DNS |
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>> and simply opens the connection to the IP 1.2.3.4 and the gateway has |
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>> now hints how to decide to which internal host the tunnel should be |
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>> opened. |
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>> |
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>> But this setup is possible because Microsoft ISA Server exactly does |
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>> this job! |
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>> |
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>> I have no idea how to solve this. First idea was a kernel bridge |
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>> between the interfaces. |
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>> |
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>> Do you have any hints for me? |
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>> |
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>> Thanks a lot! |
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>> |
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>> Andreas |
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>> |
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> Microsoft ISA Server is a Firewall/Proxy/Reverse-Proxy ... |
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> |
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> So in your case, I suppose it does a reverse proxy job (not a tunneling, |
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> just working as a web client for internal network). |
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> |
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> I already replaced several ISA server with GNU/Linux solutions, with the |
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> help of Apache and his mod_proxy ... that's imho your solution. |
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Can this also be done for SSH und IMAP stuff? |
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> |
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> -- |
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> . /mRyOuNg/ . [ SoundBomb . Syn[Rj] ] . |
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> |
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> mail: mryoung@×××××××××.net <mailto:mryoung@×××××××××.net> |
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> web : mryoung.soundbomb.net <http://mryoung.soundbomb.net/> |
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-- |
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