Memanipulasi ToS ICMP dan DNS di MikroTik

Tujuan :

• Memperkecil delay ping dari sisi klien ke arah Internet.
• Mempercepat resolving hostname ke ip address.

Asumsi : Klien-klien berada pada subnet 10.10.10.0/28

1. Memanipulasi Type of Service untuk ICMP Packet :
   > ip firewall mangle add chain=prerouting src-address=10.10.10.0/28 protocol=icmp action=mark-connection new-connection-mark=ICMP-CM passthrough=yes
   > ip firewall mangle add chain=prerouting connection-mark=ICMP-CM action=mark-packet new-packet-mark=ICMP-PM passthrough=yes
   > ip firewall mangle add chain=prerouting packet-mark=ICMP-PM action=change-tos new-tos=min-delay
2. Memanipulasi Type of Service untuk DNS Resolving :
   > ip firewall mangle add chain=prerouting src-address=10.10.10.0/28 protocol=tcp dst-port=53 action=mark-connection new-connection-mark=DNS-CM passthrough=yes
   > ip firewall mangle add chain=prerouting src-address=10.10.10.0/28 protocol=udp dst-port=53 action=mark-connection new-connection-mark=DNS-CM passthrough=yes
   > ip firewall mangle add chain=prerouting connection-mark=DNS-CM action=mark-packet new-packet-mark=DNS-PM passthrough=yes
   > ip firewall mangle add chain=prerouting packet-mark=DNS-PM action=change-tos new-tos=min-delay
3. Menambahkan Queue Type :
   > queue type add name=”PFIFO-64″ kind=pfifo pfifo-limit=64
4. Mengalokasikan Bandwidth untuk ICMP Packet :
   > queue tree add name=ICMP parent=INTERNET packet-mark=ICMP-PM priority=1 limit-at=8000 max-limit=16000 queue=PFIFO-64
5. Mengalokasikan Bandwidth untuk DNS Resolving :
   > queue tree add name=DNS parent=INTERNET packet-mark=DNS-PM priority=1 limit-at=8000 max-limit=16000 queue=PFIFO-64
6. Good Luck!!

Queue Tree with more than two interfaces

Basic Setup

This page will tak about how to make QUEUE TREE in RouterOS that with Masquerading for more than two interfaces. It’s for sharing internet connection among users on each interfacess. In manual this possibility isn’t writted.

First, let’s set the basic setting first. I’m using a machine with 3 or more network interfaces:

[admin@instaler] > in pr

# NAME TYPE RX-RATE TX-RATE MTU

0 R public ether 0 0 1500

1 R wifi1 wlan 0 0 1500

2 R wifi2 wlan 0 0 1500

3 R wifi3 wlan 0 0 1500

And this is the IP Addresses for each interface:

[admin@instaler] > ip ad pr

Flags: X - disabled, I - invalid, D - dynamic

# ADDRESS NETWORK BROADCAST INTERFACE

0 10.20.1.0/24 10.20.1.0 10.20.1.255 public

1 10.10.2.0/24 10.10.2.0 10.10.2.255 wifi1

2 10.10.3.0/24 10.10.3.0 10.10.3.255 wifi2

3 10.10.4.0/24 10.10.4.0 10.10.4.255 wifi3

On the public you can add NAT or proxy if you want.

Mangle Setup

And now is the most important part in this case.

We need to mark our users. One connectoin for upload and second for download. In this example I add mangle for one user. At the end I add mangle for local transmission because I don’t QoS local trafic emong users. But for user I need to separate upload and download.

[admin@instaler] ip firewall mangle> print

Flags: X - disabled, I - invalid, D - dynamic

disabled=no

0 chain=forward dst-address=10.10.2.36 action=mark-connection

new-connection-mark=users-userU passthrough=yes comment=”” disabled=no

1 chain=forward dst-address=10.10.2.36 action=mark-connection

new-connection-mark=users-userD passthrough=yes comment=”” disabled=no

2 chain=forward connection-mark=users-userU action=mark-packet

new-packet-mark=userU passthrough=yes comment=”” disabled=no

3 chain=forward connection-mark=users-userD action=mark-packet

new-packet-mark=userD passthrough=yes comment=”” disabled=no

98 chain=forward src-address=10.10.0.0/16 dst-address=10.10.0.0/16

action=mark-connection new-connection-mark=users-lokal passthrough=yes

99 chain=forward connection-mark=users-lokal action=mark-packet

new-packet-mark=lokalTrafic passthrough=yes

Queue Tree Setup

And now, the queue tree setting. We need one rule for downlink and one rule for uplink. Be careful when choosing the parent. for downlink traffic, we use parent “global-out”, because we have two or more downloading interfaces. And for uplink, we are using parent “public”, we want QoS uplink traffic. (I’m using pcq-up and download from manual) This example is for 2Mb/1Mb

[admin@instaler] > queue tree pr

Flags: X - disabled, I - invalid

0 name=”Download” parent=global-out packet-mark=”” limit-at=0

queue=pcq-download priority=1 max-limit=2000000 burst-limit=0

burst-threshold=0 burst-time=0s

1 name=”Upload” parent=WGW packet-mark=”” limit-at=0 queue=pcq-upload

priority=1 max-limit=1000000 burst-limit=0 burst-threshold=0

burst-time=0s

Now we add our user:

2 name=”user10D” parent=Download packet-mark=userD limit-at=0

queue=pcq-download priority=5 max-limit=0 burst-limit=0

burst-threshold=0 burst-time=0s

3 name=”user10U” parent=Upload packet-mark=userU limit-at=0

queue=pcq-upload priority=5 max-limit=0 burst-limit=0 burst-threshold=0

burst-time=0s

MAC Address + IP Address Linux

#!/bin/sh

iptables=/sbin/iptables

#definisikan default policy disini
$iptables -F INPUT
$iptables -F OUTPUT
$iptables -P INPUT DROP
$iptables -P OUTPUT DROP #ingat nanti buka policy output yg perlu
$iptables -F FORWARD
$iptables -F -t nat
$iptables -P FORWARD DROP

#definisi default policy dan bikin chain baru bernama maccheck di interface eth1
$iptables -t mangle -F
$iptables -t mangle -F maccheck
$iptables -t mangle -X maccheck
$iptables -t mangle -N maccheck
$iptables -t mangle -I PREROUTING -i eth1 -p all -j maccheck

#self explanatory… ip address + mac
$iptables -t mangle -A maccheck -s 192.168.0.1 -i eth1 -m mac -j RETURN
–mac-source
00:80:11:11:11:11
$iptables -t mangle -A maccheck -s 192.168.0.2 -i eth1 -m mac -j RETURN
–mac-source
00:80:22:22:22:22
$iptables -t mangle -A maccheck -s 192.168.0.3 -i eth1 -m mac -j RETURN
–mac-source
00:80:33:33:33:33

#selain yg terdaftar baik ip maupun mac akan di mark untuk nanti di drop, isi
dengan salah satu
mac yg aktif yg mana saja
#disini contohnya 00:80:11:11:11:11 yg sudah kita definisikan di atas
$iptables -t mangle -A maccheck -s 0/0 -i eth1 -m mac -j MARK –mac-source !
00:80:11:11:11:11
–set-mark 1
$iptables -t mangle -A maccheck -s 0/0 -i eth1 -p all -j MARK –set-mark 1

#drop packet yg di mark
$iptables -A INPUT -i eth1 -m mark –mark 1 -j DROP
$iptables -A OUTPUT -o eth1 -m mark –mark 1 -j DROP
$iptables -A FORWARD -i eth1 -m mark –mark 1 -j DROP

#lanjutkan firewall script anda disini

source = primadonal.com