Fetch Tool

Di posting dari email newsletter mikrotik.com, fitur baru yang ada di versi 3.x.

Akan sangat berguna untuk mendonlot file nice.rsc dari mikrotik.co.id :D

For some time now, RouterOS has a neat little feature – it’s called Fetch.
It is a HTTP and FTP client program that allows you to download iles to your router.

For example fetch in action:

[admin@I] /tool> fetch address=human.network.com \
path=index.php host=forum.mikrotik.com
status: connecting

status: downloading
downloaded: 7KiB
duration: 1s

Burst for each TCP connection

Diambil dari http://forum.mikrotik.com/viewtopic.php?t=12870

This is little how-to create manual burst using queue tree.

As it is bandwidth control using queue tree first we need to mangle traffic

first i mangle all connections, then i mark first 2Mbytes then i mark the rest of packets

/ip firewall mangle add chain=forward protocol=tcp \
action=mark-connection \
new-connection-mark=new_conn passthrough=yes \
comment="mark all new connections" disabled=no

/ip firewall mangle add chain=forward protocol=tcp  \
connection-mark=new_conn \
connection-bytes=0-2000000 action=mark-packet \
new-packet-mark=new_packet passthrough=no \
comment="mark packets" disabled=no

/ip firewall mangle add chain=forward protocol=tcp \
connection-mark=new_conn action=mark-packet \
new-packet-mark=old_packets passthrough=no \
comment="marking old packets" disabled=no

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How to convert a MT box in an Anti Spam server with v2.9

Diambil dari http://forum.mikrotik.com/viewtopic.php?t=15721

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…
but
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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How to prevent NATed access

Sesuai dengan judul diatas,
inti dari kasus ini adalah penyedia jasa tidak ingin BW yang diberikan kepada user di sharing lagi mempergunakan nat-router.

Ilmu baru buat saya, dengan memberikan TTL=1 ?, mmmm aneh sekali.
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