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Cisco: konfig DHCP server

Request dari bos untuk setup dhcp di cisco, device yang dipakai cisco 1721

Kondisi yang diminta adalah dhcp untuk 10 komputer.
Jadi saya konfig untuk ip dhcp memakai ip 100 – 199.
Ip yang dibawah 100 nanti bisa dipergunakan untuk user yang tidak ingin memakai dhcp dan server (kalau ada).

ip dhcp excluded-address
ip dhcp excluded-address
ip dhcp pool

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Postfix-postfixadmin-dovecot di trustix 3.05

Pada panduan ini, tidak dijelaskan memakai fasilitas qouta dan SALS.

Pilih paket-paket instalasi seperti contoh dibawah. Agar Trustix tetap ramping.

paketan di trustix

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Mikrotik: DHCP Pool usage

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tested on 3.7

# WarnAt needs to be at what percentage you want to be warned you are running out of IP addresses.
:local WarnAt 10
#Name of DHCP Pool you want to monitor
:local DHCPPoolName dhcp_pool1
#Your Email to notify you when running out of available ip's
:local Email
#Your mail server ip address
:local EmailServer

#Declare Variable
:local Total

:foreach i in=[/ip pool get $DHCPPoolName ranges] do={
#Get the DHCP pool range and put into a string.
:local range [:tostr $i]
#Get the Start address of the range
:local Start [:pick $range 0 [:find $range "-"]]
#Get the End address of the range
:local Stop [:pick $range ([:find $range "-"] + 1) 31]
#Calculate how many IP's are in the Pool by subtracting the end address and the start address and add one.
:local ip ($Stop - $Start +1 )
#Save the size of the pool to Total
:set Total ($ip + $Total)

#Get the name of the Server that is using the Pool
:local Server [/ip dhcp-server get [/ip dhcp-server find address-pool="$DHCPPoolName"] name]
#Get the number of IP address's used in the pool
:local Used [/ip dhcp-server lease print count-only where server=[/ip dhcp-server get [/ip dhcp-server find address-pool=$DHCPPoolName] name]]
#Subtract used from total to get available
:local Available ($Total - $Used)
#Calculate percentage IP's available
:local Perc (($Available * 100) / $Total)
#Setup e-mail
:local Subject ([/system identity get name] . " DHCP pool is at $Perc")
:local Body ("Out of $Total addresses you have $Available available")

#Send out Email when available ip's percentage is below or equal to warnat
:if ($Perc <= $WarnAt) do={
/tool e-mail send to=$Email subject=$Subject body=$Body server=$EmailServer
:log info $Body

How to change dynamic queues

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Saya belum bisa mendeskripsikan secara jelas fungsi script di bawah.
Tetapi dari thread di topik, ini berfungsi untuk mengganti rate di user pada saat koneksi sedang berjalan.

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Compile spine 0.8.7b di debian

Error pada waktu kompile

cacti-spine-0.8.7a# ./configure
configure: error: cannot run /bin/sh config/config.sub

Setelah di investigasi di google, ternyata belum ada library libtool

apt-get install libtool

Setelah masalah libtool selesai, muncul lagi masalah berikutnya :d

$ ./configure
configure: error:

*** [Gentoo] sanity check failed! ***
*** libtool.m4 and have a version mismatch! ***
*** (libtool.m4 = 1.5.22, = "1.5.22 Debian 1.5.22-4") ***

Please run:

  libtoolize --copy --force

Solusinya dari forum :
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How to convert a MT box in an Anti Spam server with v2.9

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Hi there, for months I have the idea how to transform one Mikrotik OS in an Anti Spam server. After more than 20 days applying few scripts, firewall rules and address list, I have achieved reduce from 45.000 mails per day to only 11.000/12.000 without many complaints from my customers.

Before continuing, some details about this:

Yes, I know that exists others solutions.
Yes, I know with Linux can obtain the same results.
Yes, I know that it seems a crazy solution.
Yes, I know (in the practice) that this solutions generate a moderate cpu usage. I have a Pentium IV with 75% of cpu usage (this can change with new features from MT… see scripts explanation) and we are a little ISP.
Yes, yes, yes…
I use MT from six years ago (when John Tully & Arnis Riekstins answered the company mails themselves) and always I try to resolve any networking necessity whit MT.
I had the trust that can resolve this whit MT.
and after thinking about this, I can’t never sleep all night from many days, so, for my health and wife I made it !!!

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