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non-tcp traffic

 
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Posted: Mon Nov 20, 2017 7:17 pm    Post subject: Ads

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ssprenge
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PostPosted: Wed Feb 27, 2008 7:42 am    Post subject: non-tcp traffic Reply with quote

It appears that there are some problems with ftp and other kinds of traffic through the open-mesh node.

Don't know if it's the hardware(Meraki) or the open-mesh firmware...

I can't transmit ftp traffic.

And I can't send formMail traffic through the node.

Anyone else try this?

--ssprenge
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williamruckman
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PostPosted: Wed Feb 27, 2008 3:07 pm    Post subject: Reply with quote

i am not sure what firmware version you are using but I am using the non-test stable version and I can use FTP and PPTP just fine through the nodes. You should check your packet loss percentage as well. If you are losing too many packets you may see issues like that.

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ssprenge
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PostPosted: Wed Feb 27, 2008 7:54 pm    Post subject: Reply with quote

williamruckman wrote:
i am not sure what firmware version you are using but I am using the non-test stable version and I can use FTP and PPTP just fine through the nodes. You should check your packet loss percentage as well. If you are losing too many packets you may see issues like that.



From the dashboard here is the version:
r2-c422
0.3-rv964

For what it's worth, I think VoIP works through it, as I've made some calls through the node. Anyone try sending any live video feeds?

--ssprenge
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williamruckman
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PostPosted: Thu Feb 28, 2008 3:09 pm    Post subject: Reply with quote

I did do a Skype video call through it and it worked perfectly. Little to no lag and the video was smooth.

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Malindi
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PostPosted: Fri Feb 29, 2008 7:47 am    Post subject: Reply with quote

I just tried FTP on a node 1 hop from th gateway. Running test firmware... Works fine.
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tater_gunz
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PostPosted: Fri Feb 29, 2008 2:05 pm    Post subject: Reply with quote

Same here. On the latest test firmware, everything seems to work great for me.

- Tate

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openijl
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PostPosted: Wed Mar 12, 2008 10:02 pm    Post subject: Reply with quote

Hi,

There is a problem here, even through one hop. The Windows (XP) FTP utility fails:

ftp> debug
Debugging On .
ftp> dir
---> PORT 10,108,200,200,16,63
500 Illegal PORT command
---> LIST
425 Unable to build data connection: Connection refused
ftp>

Here's the output from SmartFTP, which succeeds only because it detects the error and then changes from the (non-default) "Active Mode (PORT)" to "Passive Mode (PASV)":

[19:57:55] CWD /home/wsmatty/docs/courses/images
[19:57:55] 250 CWD command successful.
[19:57:55] PWD
[19:57:55] 257 "/home/wsmatty/docs/courses/images" is current directory.
[19:57:55] TYPE A
[19:57:55] 200 Type set to A
[19:57:55] PORT 10,108,200,100,14,213
[19:57:58] 500 Illegal PORT command
[19:57:58] Automatic failover of data connection mode from "Active Mode (PORT)" to "Passive Mode (PASV)".
[19:57:58] PASV
[19:57:58] 227 Entering Passive Mode(193,195,0,187,34,9).
[19:57:58] Opening data connection to 193.195.0.187 Port: 8713
[19:57:58] LIST -aL
[19:57:58] 150 Opening ASCII mode data connection for file list
[19:58:06] Transfer Timeout (60s). Closing data connection.
[19:58:06] 11253 bytes transferred. (1.37 KB/s) (00:00:0Cool
[19:58:06] 226 Transfer complete.

This was using ROBIN version "beta-1.00.3-rv964"

I'm wondering whether this is a problem caused by NAT/firewall or tunneling?
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PostPosted: Wed Mar 12, 2008 10:53 pm    Post subject: ftp Reply with quote

test. I can't post. and so this is just a test.
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PostPosted: Wed Mar 12, 2008 10:54 pm    Post subject: ftp Reply with quote

same exact error. I attempted to post this a number of times, but hope this succeeds.

firmware ver:
t_c524
0.3-rv964
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williamruckman
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PostPosted: Thu Mar 13, 2008 1:31 am    Post subject: Reply with quote

Yes, it is caused by the NAT / firewall. FTP only switches to passive mode if it cannot connect through the firewall to make the data connection. you have to pass both FTP ports through your firewall. The control port and the data port in order to use active FTP

Ports to forward to the server:

Control port: 21 tcp
Data port: 20 tcp

Here is a really good page that will explain better:

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openijl
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PostPosted: Thu Mar 13, 2008 11:33 am    Post subject: Reply with quote

Hi William,

Thanks for the link on FTP, and yes, you're right.

My point is that I only get the problem when I connect wirelessly through the ROBIN gateway.

If I connect directly to the Ethernet subnet that the ROBIN gateway is connected to, there's no problem. Likewise if I connect via a regular Access Point to the same subnet, there's no problem.

So the problem is not with our firewall - it would appear to be down to the default firewalling of the "beta-1.0 0.3-rv964" and probably other firmware.
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PostPosted: Thu Mar 13, 2008 2:57 pm    Post subject: Reply with quote

I understand. I didn't think the issue was that involved.

The nodes are pretty much just routed from the gateway. There are 2 things that i see that could cause the problem.

1. On the dashboard, make sure you disable "Gateway LAN Block" under the advanced options. and if the FTP is on the same node be sure to disable "AP#1 Isolation" or "AP#2 Isolation"

2. Your FTP server may not know the return route to the client. You may want to add static routes on the FTP server or NAT router that points the following subnets to your gateway nodes eth0 ip:

169.254.0.0/16
5.0.0.0/8
10.0.0.0/8

3. if all of that fails, then try opening ports to the client using ssh on the node and the iptables command to experiment. Although with active FTP, ports over 1023 have to be forwarded and ports 20, and 21 on the server need to be forwarded.

Hope this helps.

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PostPosted: Tue Oct 14, 2008 2:11 am    Post subject: Reply with quote

Could Bill or other fellow explain the method 2) in his fix to the problem of ftp server not knowing the return route?

Specifically, how to "add static routes on the FTP server or NAT router that points the following subnets to your gateway nodes eth0 ip:
169.254.0.0/16
5.0.0.0/8
10.0.0.0/8 "

I know how to do the port forwarding. Beyong that, need more instructions.

The problem I'm running into was that from a laptop, ftp to a ftp server under the wired router. If I do
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I got a prompt of login and password, but then hung on showing the contents.

Thanks!

ML
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