RB411 Router in Bridge mode - not web browsing allowed

RouterOS Beginner Basics
1

Hi Guys,

Just to extend on my previous post - I’ve attached the config in winbox as well.
RouterConfig.jpg
The router is setup as a Bridge, all machines on the network can ping each other, remote pc’s can ping the gateway 192.168.1.1 and they can resolve IP’s via dns ie ping http://www.google.com returns the correct IP. Even skype is online on the remote pc’s but none of them can browse the internet. The ADSL router is on the local side and the Microtik is plugged into the ADSL via ethernet cable.

There is no FIRWALL rules setup on the microtic.

But for some reason only web browsing is impossible through the MicroTic - any ideas or reasons will be greatly appreciated.

Thanks

Willie

2

If only http(s) traffic is blocked, check for any errors with any proxy settings. You may have enabled a transparent proxy or an upstream proxy somewhere incorrectly?

Ron.

3

try telnet to port 80 and see what output you get. also traceroute - maybe you are NATtin the www connections somewhere?

4

Hi guys thanks for the replies,

The funny thing is that Client’s can over the wan access the ADSL router config on http://192.168.1.1 therefore HTTP is not blocked, there is no proxies configured any where. And my machine which is not going through the RB411 can access web pages on the internet with a DHCP ip assigned by the DSL router. The other machines are also receiving DHCP ip’s through the router.

I’ve replaced the RB411 board but the problem persists?

I’m lost!

Willie

5

can you open webpages that are on other ports? can you open webpage if you just type the IP? can you do a traceroute to 159.148.147.194 (mikrotik) and see if it correctly reaches the end? what is behind the router, just the ADSL router and that’s it?

6

Skype works therefore the packets are routed, I can do a dnslookup on http://www.google.com therefore the dns is working. The router is plugged directly into the ADSL line. Through the router i can ping the microtic web site but I cant browse it.

Is there a setting on the microtic that enables the browsing of web pages.

The only other possible issue is that the microtic connects to an AP that uses a BridgePoynt turbo board. Might there be compatibility issues between them? I’ve attached my network layout, the RB411 is the node 192.168.1.2 and the AP 192.168.1.3 is a BridgePoynt turbo the problem occurs from any PC connected to 192.168.1.3 and 192.168.1.4 - the RB411 connected to the WUG is currently switched of and therefore not part of the problem.

I’ve removed all routes and the only route configured on the network is the one on RB411 that says 0.0.0.0/0 goes to 192.168.1.1

Again all traffic flows except browsing of websites and the DHCP works.

Hope fully the layout gives a better representation of the network setup.
WillieBurger Network.pdf (175 KB)

7

of course there is no such setting. if all traffic works, except browsing, my guess could be - maybe your ISP is blocking something?

8

It must be an incompatibility issue then as if i’m not going through the microtic then I can browse the internet :frowning: thanks for the replies though.

Willie

9

maybe the ISP doesn’t allow this certain MAC address through? Maybe they are detecting a router there?

10

Hi WillieBurger.

Were you able to sort out the problem?

11

Try change ur currect MTU size

12

Exactly, The MTU does the trick
I think it has to do with the transparent proxy of the ISP