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7 posts

Wannabe Geek


#138514 7-Jan-2014 16:36
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Hi,

I am trying to configure the MikroTik RB750 to be fully bridge to a firewall, so the firewall will have the public IP at WAN with full control of traffic and port forwarding.

The RB750 is connected with Telecom UFB (fibre).


Connection:

Chrous ONT -----> (eth1) RB750 (eth2) -----> (WAN) firewall (LAN) ----> devices.




I am new to MikroTik product and RouterOS so not 100% sure the correct setup. Anybody who have experience please shed some light.



Thanks









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8035 posts

Uber Geek

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  #962577 7-Jan-2014 16:48
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You probably want a transparent bridge, there's a thread here about a similar setup
http://www.geekzone.co.nz/forums.asp?forumid=66&topicid=136810






7 posts

Wannabe Geek


  #962606 7-Jan-2014 18:01
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Thanks for the reply. 

I did comes across that forum but I am not too sure if it will actually pass the Public IP over to the firewall.


So following are the configuration I have copy from the forum mentioned.

interface bridge add name=bridge1 disabled=no arp=enabled - in order to create a bridge
interface bridge port set ether0 bridge=bridge1 priority=128 path-cost=10 - To add the physical eth0(WAN cable from UFB) interface to the bridge.
interface bridge port set ether2 bridge=bridge1 priority=128 path-cost=10 - to add the physical eth1(Cable connecting UTM9s and Mikrotik) to the bridge.

Will these be all the command I need? Or there are more ?

what about the add ip address command mentioned in here: http://ferdi.blog.unas.ac.id/pengenalan-dasar/transparent-bridge-with-mikrotik/. What IP should I enter given the example below.


ONT  ------->     (eth1) RB750 (192.168.88.1)     ----->    (WAN public ip: 111.222.333.444/32) Firewall (Lan 192.168.15.1/24)      ---->          192.168.15.0/24




Thanks.

 
 
 
 


2411 posts

Uber Geek

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  #962612 7-Jan-2014 18:15
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From factory...
Connect your computer to say port 3 as you will be doing stuff on ports 0/1
Celete DHCP Client from ether0
Create VLAN10 on eth0
Create a new Bridge
Add the VLAN10 and Port 1 to it.

Now that will bridge VLAN10 (UFB) and ether1

then run DHCP or PPPOE (or whatever your provider needs) on the firewall)

The Mikrotik is a pretty good firewall so any reason you don't want to use that to terminate the L3 Side of the UFB Connection? (your'd like RUN DHCP Cleint or PPPoE on the VLAN10 interface)

And if your Firewall cannot do VLANS maybe upgrade firmware/read manual as I presume you are using the Mikrotik as the firewall cannot do VLANS?




8035 posts

Uber Geek

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  #962621 7-Jan-2014 18:31
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WickedWings: Thanks for the reply. 

I did comes across that forum but I am not too sure if it will actually pass the Public IP over to the firewall.



1: What make/model/software is your firewall? Can it do VLAN tagging on the WAN?
2: What is your ISP? Does the ISP use PPPoE or DHCP or something else for the connection?

The main reason to use a Mikrotik RB750 in addition to the firewall is if firewall can't do VLAN tagging (quite common on older stuff) on it's WAN interface or can't do PPPoE (which would be weird). Though their are other reasons for using the RB750 like load balancing over multiple connections etc but doesn't sound like the case here.

The Firewall would connect to the ISP and get the public ip address, dns, gateway etc (via PPPoE or DHCP) but it would go via the Mikrotik transparent bridge which adds the required VLAN tag id.





7 posts

Wannabe Geek


  #962634 7-Jan-2014 18:50
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1. The firewall is a Netgear UTM9s. I have contacted netgear and they are working on a firmware that will support VLAN on WAN for NZ UFB. Should be out next few month. So the RB750 is a temporary solution that I need.

2. ISP is telecom. I am actually not too sure which connection type they are using. Maybe someone can confirm this for me. At the moment I am just playing with free modem from telecom which can't do bridging......



Thanks

8035 posts

Uber Geek

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  #962638 7-Jan-2014 18:57
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Yeah you want the same setup as the other thread.

So you would setup PPPoE in the Netgear and transparent bridge in the Mikrotik.

Telecom uses PPPoE but you can put blank in the username and password as Telecom authenticates your account/session by physical line.

http://help.telecom.co.nz/app/answers/detail/a_id/1180

Operating Mode : MDI/MDIX
PPP Protocol : PPPoE
PPP Username: blank
PPP Password: blank
PPP Auth Type : blank
Encapsulation : 802.1Q
PCP Marking : 0
VID (or VLAN) : 10
MTU : 1,500 or AUTO



7 posts

Wannabe Geek


  #963876 9-Jan-2014 13:58
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It worked!!! Awesome.

Thanks to everyone who helped so promptly......

Cheers.

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