On 2014-10-21 17:21, Bambang Setiawan wrote:
> tidak pak kami menggunakan 1 koneksi internet mungkin jadi seperti ini
> 
>     client --- switch hub --> proxy
>                                 |
>                                 mail server --> firewall  --> internet

Masak sih proxy server tidak connect langsung ke internet?
Lalu bagaimana user akan browsing?
Apakah di MDaemon diaktifkan Internet Connection Sharing?

> atau saya block port 25 dari client ke mailserver pak ?

kalau seperti diatas, maka block outbound tcp port 25 di firewall dan
proxy akan membantu walau sebenarnya cara itu tidak efisien.

Bukankah proxy server saat ini pakai private IP?
Mestinya private IP akan masuk dalam daftar whitelistnya semua mail
server didunia (termasuk MDaemon)?
Atau LAN Anda tidak pakai private IP?
Jika benar, maka

Private IP standardnya adalah

http://technet.microsoft.com/en-us/library/cc958825.aspx

---
10.0.0.0/8
The 10.0.0.0/8 private network is a class A network ID that allows the
following range of valid IP addresses: 10.0.0.1 to 10.255.255.254. The
10.0.0.0/8 private network has 24 host bits that can be used for any
subnetting scheme within the private organization.

172.16.0.0/12
The 172.16.0.0/12 private network can be interpreted either as a block
of 16 class B network IDs or as a 20-bit assignable address space (20
host bits) that can be used for any subnetting scheme within the private
organization. The 172.16.0.0/12 private network allows the following
range of valid IP addresses: 172.16.0.1 to 172.31.255.254.

192.168.0.0/16
The 192.168.0.0/16 private network can be interpreted either as a block
of 256 class C network IDs or as a 16-bit assignable address space (16
host bits) that can be used for any subnetting scheme within the private
organization. The 192.168.0.0/16 private network allows the following
range of valid IP addresses: 192.168.0.1 to 192.168.255.254.
---

-- 
syafril
-------
Syafril Hermansyah
MDaemon-L Moderators, running MDaemon 14.5.0-64 bit Beta GM3, SP
4.5.0-64 Beta GM1
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