Community discussions

MikroTik App
 
rafa_lore
Member Candidate
Member Candidate
Topic Author
Posts: 121
Joined: Tue Apr 17, 2007 4:57 am
Location: Salta
Contact:

I can't mangle packet with Layer 7

Fri Oct 05, 2007 1:40 am

Hello everybody
I'm studding Layer 7 with MKT, becuase is something WONDERFULL. I ask it in the MUM of Argentina, and they say me A GOOD QUESTION and nothing more. And now appears!!!
But I've some problems.... :(
I insert in /ip firewall layer7-protocol the instructions that are in http://www.mikrotik.com/download/l7-protos.rsc. Then I create this 4 rules in mangle:
0 ;;; HTTP Layer 7
chain=prerouting action=mark-connection new-connection-mark=HTTP_CON passthrough=yes layer7-protocol=http

1 chain=prerouting action=mark-packet new-packet-mark=HTTP passthrough=no connection-mark=HTTP_CON

2 ;;; RESTO
chain=prerouting action=mark-connection new-connection-mark=RESTO_CON passthrough=yes

3 chain=prerouting action=mark-packet new-packet-mark=RESTO passthrough=no connection-mark=RESTO_CON

Finally I open a browser and start use it, and the only marks that appears un CONNECTIOS are "RESTO_CON", none marks of "HTTP_CON". Look this is a print of Connections:
17 SA protocol=tcp src-address=10.10.1.253:51260 dst-address=200.43.15.16:80 reply-src-address=10.10.200.1:3128 reply-dst-address=10.10.1.253:51260
tcp-state=96 timeout=5s connection-mark="RESTO_CON" p2p=none
18 SA protocol=tcp src-address=xxx.xxx.xxx.xxx:43112 dst-address=200.43.15.16:80 reply-src-address=200.43.15.16:80 reply-dst-address=xxx.xxx.xxx.xxx:43112
tcp-state=232 timeout=5s connection-mark="RESTO_CON" p2p=none
19 SA protocol=tcp src-address=10.10.1.253:51261 dst-address=200.43.15.16:80 reply-src-address=10.10.200.1:3128 reply-dst-address=10.10.1.253:51261
tcp-state=none timeout=4s connection-mark="RESTO_CON" p2p=none
20 SA protocol=tcp src-address=10.10.1.253:51262 dst-address=200.43.15.16:80 reply-src-address=10.10.200.1:3128 reply-dst-address=10.10.1.253:51262
tcp-state=232 timeout=4s connection-mark="RESTO_CON" p2p=none
21 SA protocol=tcp src-address=xxx.xxx.xxx.xxx:43113 dst-address=200.43.15.16:80 reply-src-address=200.43.15.16:80 reply-dst-address=xxx.xxx.xxx.xxx:43113
tcp-state=none timeout=5s connection-mark="RESTO_CON" p2p=none
22 SA protocol=tcp src-address=xxx.xxx.xxx.xxx:43114 dst-address=200.43.15.16:80 reply-src-address=200.43.15.16:80 reply-dst-address=xxx.xxx.xxx.xxx:43114
tcp-state=172 timeout=5s connection-mark="RESTO_CON" p2p=none
23 SA protocol=tcp src-address=10.10.1.253:51263 dst-address=200.43.15.16:80 reply-src-address=10.10.200.1:3128 reply-dst-address=10.10.1.253:51263
tcp-state=225 timeout=4s connection-mark="RESTO_CON" p2p=none

As you can see the IP 200.43.15.16 is working in port 80, so it is HTTP!!!
I'm using a HOTSPOT Server to try it, but I think that it doesn't depends in what type of server I'm using.
Somebody could tell my what I'm doing bad?
Thank you very much

Rafael Loré
 
User avatar
normis
MikroTik Support
MikroTik Support
Posts: 26914
Joined: Fri May 28, 2004 11:04 am
Location: Riga, Latvia
Contact:

Re: I can't mangle packet with Layer 7

Fri Oct 05, 2007 9:27 am

no mangle. put it directly into firewall.

1. make the l7 rule
2. use the created rule in a firewall drop rule
 
User avatar
mrz
MikroTik Support
MikroTik Support
Posts: 7188
Joined: Wed Feb 07, 2007 12:45 pm
Location: Latvia
Contact:

Re: I can't mangle packet with Layer 7

Fri Oct 05, 2007 11:34 am

layer7 matcher must see traffic in both directions. Put your rule in forward chain and it should work.
 
rafa_lore
Member Candidate
Member Candidate
Topic Author
Posts: 121
Joined: Tue Apr 17, 2007 4:57 am
Location: Salta
Contact:

Re: I can't mangle packet with Layer 7

Fri Oct 05, 2007 3:11 pm

Thank Boy for your request!!!
But normis, I don´t undestand you, I want to use Mangle, becuase then I will use QUEUE TREE!!. If I drop you know how be my telephone :D
And another thing, mrz you say me that I have to use in forward, but I want to use different gateway for some traffic, example P2P. I can't do it with forward, isn't it?
Thank you very much!!!!! :)
Rafael Loré
 
User avatar
mrz
MikroTik Support
MikroTik Support
Posts: 7188
Joined: Wed Feb 07, 2007 12:45 pm
Location: Latvia
Contact:

Re: I can't mangle packet with Layer 7

Fri Oct 05, 2007 8:16 pm

You can! Just set ingoing or outgoing interface. But if you really need that rule in prerouting, then it is possible to add two rules like this:
/ip firewall mangle
add action=mark-connection chain=prerouting comment="L7 bittorent" connection-mark=lat-download-conn layer7-protocol=bittorrent new-connection-mark=lat-p2p-download-conn passthrough=yes 

add action=passthrough chain=postrouting layer7-protocol=bittorent
In this example bittorent matcher will see connections in both directions.

Who is online

Users browsing this forum: No registered users and 52 guests