Networking :: Port Trunking In Managed-Switch

Oct 4, 2010

I am trying to do Port Trunking in my Managed-Switch..

I bond 2 Gb NICs (Eth0 & Eth1 = Eth-Bond0) to mode=4

will I have 2Gbps for Eth-Bond0?

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Fedora Networking :: Eth0 No Longer Managed In NM - Device Not Managed ?

Nov 3, 2010

I use my T61 both wireless and in the dock, where I switch to the wired connection. After the latest round of updates, I seem to have lost the ability to switch to the wired network. When I turn the laptop on, I see it connect to the wireless network, but when I left click on the tray icon under Wired Network is says Device not managed. I have not made any changes to anything in the last couple weeks, besides some updates. How do I go about getting the wired network back in there?I tried to add eth0 back into System - Preferences - Network Connections, but whenever I try and add eth0, but it still says Device not managed.

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Networking :: Allow A Certain Ip On A Certain Switch Port?

Oct 6, 2010

Server is on Port 1, with an address of 10.3.2.1.

Someone plugs into Port 2 and gives themself the same address.

That would cause problems, right?

So, is there a way, to say to the switch, "Hey, 10.3.2.1 is on Port 1, and nowhere else. Do not let anyone use the IP 10.3.2.1 on any other port, and if they do, disallow the traffic."

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Networking :: Get Each Port Of Traffic Of A Switch In MRTG?

Mar 5, 2010

made software which we can get network traffic Report of of Switches for Daily,monthly and yearly base , in MRTG we can configure as a switch so we can get particular switch Traffic but how can we get each port of traffic of a switch in MRTG

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Networking :: OpenWRT LAN Switch Port Descriptions

Jan 25, 2010

I have an Asus WL-500G Premium router with OpenWRT, with built in 4-port switch. There is one server connected to each switch port. Is it possible to give a description to every switch port in Asus WL-500G Premium? This description should survive reboot as well Is it possible?

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Fedora Networking :: Port Redirect, I.e. Whatever Comes Through Whatever Interface On Port AAAA Will Get Redirected To Port BBBB?

Feb 18, 2010

I want to do a simple port redirect, i.e. whatever comes trough whatever interface on port AAAA will get redirected to port BBBBI thought that iptables -t nat -I PREROUTING --source 0/0 --destination 0/0 -p tcp --dport AAAA -j REDIRECT --to-ports BBBBhowever it doesn't work, e.g. nc -v -w2 -z localhost AAAA gives:

nc: connect to localhost port AAAA (tcp) failed: Connection refused
while
nc -v -w2 -z localhost BBBB

[code]....

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General :: Tomato/DD-WRT Router To Act As Switch And Only NAT Some Port

Sep 17, 2010

I have a device that must use a real IP address. Currently, my ISP uses DHCP and I can have up to 4 real IP address assigned. However, the cable modem only have 1 ethernet port and it's connected to my router (running Tomato, but can run DD-wrt or other Openwrt if required). Question stems from how I can connect the additional device, requiring a real IP? would be to get a switch and connect to the CM, Router, and Device. But alas, I want to avoid this route, since:

my wiring cabinet in my home is drawing lots of power and heat already Device will be unprotected by any firewall unable to monitor the traffic to/from device.Besides, what would be the FUN in that? what I want to do is to configure the router, so that one of the switchport is removed from the normal br0 bridge. Instead, I want to make it behave like a switch on the WAN port. What's the best way of doing this? Should I create another bridge on the WAN & the device port? Can a single port belongs to two bridges? or would I need to create a subinterface first? Would I need a DHCP-relay? Am I expecting too much from my poor cheapie router?

+------+
| CM |
+--++--+
||
+----WAN---------------+

[code]....

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Red Hat / Fedora :: HBA Card - Connect The HBA To Another Switch Port

Dec 3, 2010

I have 2 HBA's in my system, in that one shows as READY state and the other HBA shows as DEAD state. I have asked the datacenter guys to to connect the HBA to another switch port and I rebooted the server. After reboot the second HBA came to READY state but after some time again it went to DEAD state.

Host adapter:loop state = <DEAD>, flags = 0x45a03

Is this the problem with the server or with the storage end

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Hardware :: Check The Status Of A Switch Though Serial Port?

Oct 20, 2010

I would need to monitor the status of an electric relay. To do so I was thinking the serial port and perl (as I don't know C ) how to check if a switch connected to a serial port is open or closed. Here is my plan, I'll plug a electric relay on the electric network and monitor the state of the switch. if the switch is closed, that mean that we are on the electric network if the switch is open that mean that we are on our diesel power generator.

PS: There will be no voltage input involve (although I can if that's required)

I'm planning to use this with Nagios to know if we are on the electric network or on our diesel power generator.

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Fedora Networking :: Eth0 No Longer Managed In NM

Aug 27, 2010

I use my T61 both wireless and in the dock, where I switch to the wired connection. After the latest round of updates, I seem to have lost the ability to switch to the wired network. When I turn the laptop on, I see it connect to the wireless network, but when I left click on the tray icon under Wired Network is says Device not managed.I have not made any changes to anything in the last couple weeks, besides some updates. How do I go about getting the wired network back in there?I tried to add eth0 back into System - Preferences - Network Connections, but whenever I try and add eth0, but it still says Device not managed.

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Fedora Networking :: Cannot Find Managed-keys.bind

Jul 14, 2011

Bind on Fedora 14 is driving me crazy.I am getting messages when I restart BIND stating it cannot find the managed-keys.bind file but it's right where it's suppose to be, and the directory is writable.

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Ubuntu Networking :: 9.10 Aspireone Wireless Device Not Managed?

Feb 28, 2010

Seems everytime I upgrade wireless quites working.

Anyways, here's the info:-Acer Aspire One AOA150-1997

Quote:

kevin@ubuntu:~$ lspci
00:00.0 Host bridge: Intel Corporation Mobile 945GME Express Memory Controller Hub (rev 03)
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GME Express Integrated Graphics Controller (rev 03)
00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03)

[Code]...

I think that's all that would be needed to help diagnose the issue. I'm kinda new to linux, and this is primarily a music machine.

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Ubuntu Networking :: Realtek RTL8187 - Device Not Managed

Apr 27, 2010

I have a problem with my internet connection this is the picture the device is Realtek RTL8187. i didn't know how can i manage this device to work so could you help me i don't have an internet connection in ubuntu right know and i really wanna move to ubntu my verison is 9.10

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Ubuntu Networking :: Nm-connection-editor Eth0 Not Managed

Aug 25, 2010

I'm getting rather fed up with this Network Manager applet on Ubuntu and its seemingly erratic behavior.I often use my laptop for things like dhcp server to do pxe boot on other machines for netboot installs and other stuff. Often I have to set static address on eth0 etc.I know how to set a static address for eth0 by editing /etc/network/interfaces and all that good stuff, but when I click on the Network Manager applet, it says 'Wired Network - not managed'.I may have deleted it for some reason, but why does it no longer appear, even though eth0 is working?I've also found in the past that changes to interfaces in the Network Manager, such as giving eth0 a static address, do not seem to stick?

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Ubuntu Networking :: 10.04 Asus USB-N13 Not Managed By Network Manager

Oct 3, 2010

Just purchased a Asus USB-N13, and having follwed a mixture of tutorials, including the readme on the driver disk, i have had no luck in getting this adapter to work.Upon using "sudo iwlist ra0 scan" the adapter can see multiple networks, however device manager is stating that the device is not managed. How can I get this sorted and connect to a network?

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Ubuntu Networking :: Wireless PC Card Not Managed By Nm-applet?

Jan 11, 2011

I'm trying to get a wireless PC (PCMCIA?) card working under 10.04 desktop. It does not seem to be recognized by nm-applet and I cannot see any particular reason why. I have disabled the built in wireless (Intel 2200) in both BIOS and by blacklisting the appropriate module so there should be no interference from that. The card is a Linksys WPC300N V1. It has Power and Link/Act LEDs both of which remain dark.

Here's the information I have collected regarding the card:

lshw:

Code:
hbarta@willow:~$ sudo lshw -c network
*-network
description: Ethernet interface
product: 82540EP Gigabit Ethernet Controller (Mobile)

[Code]....

I saw a comment about 'You need to have "managed=true" for NetworkManager to bring the interfaces up. in '/etc/NetworkManager/nm-system-settings.conf and did so but I see no change.

I understand that modules must be compiled to support network-manager but I would expect that to be the case with modules that ship with 10.04. I don't see any obvious indications for why this is not coming up with network-manager. Is there something I;m overlooking or something else I need to do?

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Ubuntu Networking :: Nm-connection-editor Eth0 Not Managed?

Apr 23, 2011

I'm getting rather fed up with this Network Manager applet on Ubuntu and its seemingly erratic behaviour. I often use my laptop for things like dhcp server to do pxe boot on other machines for netboot installs and other stuff. Often I have to set static address on eth0 etc. I know how to set a static address for eth0 by editing /etc/network/interfaces and all that good stuff, but when I click on the Network Manager applet, it says 'Wired Network - not managed'. I may have deleted it for some reason, but why does it no longer appear, even though eth0 is working? I've also found in the past that changes to interfaces in the Network Manager, such as giving eth0 a static address, do not seem to stick? It seems the only thing this applet is useful for is connecting to a wireless network.....and only with dhcp !!

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Networking :: Benefits Of Moving To Smart And Managed Switches

Jan 6, 2010

Right now we are running a gigabit network with unmanagead switches. What do i gain performance wise and capability wise with moving to smart and managed and do these benefits make the cost worth it?

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Ubuntu Networking :: Network Manager Pppoeconf Device Not Managed?

Apr 30, 2010

After the use of pppoeconf, the network manager does not recognise neither the wired nor the wireless connection anymore. (It nicely did it before that) I tried to replace the etc/network manager folder with that of a different machine. Still the same. What else can I do to reset Network Manager ?

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Ubuntu Networking :: 9.04 - Internet - Wired Network - Device Not Managed

Sep 21, 2010

I'm having trouble getting onto the internet with ubuntu 9.04. I have just moved house and have just got the internet set up here (typing this on windows laptop with wireless). My ubuntu desktop is plugged in to the network, but in the top right hand corner when I click on the network icon I get: "Wired network device not managed"

In my old house I had a static IP. Is this anything to do with it?

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Ubuntu Networking :: How To Bridge A Wlan Card In Managed Mode

Feb 3, 2011

I have 2 wlan cards. wlan0 and wlan1. wlan0 is in AP mode(Master mode) using hostap. wlan1 is connected to another wireless network and is in Managed mode. Now I want to make a bridge between wlan0 and wlan1. I do it like that:

ifconfig wlan0 0.0.0.0
ifconfig wlan1 0.0.0.0
brctl addbr mybridge
brctl addif mybridge wlan1
can't add wlan1 to bridge mybridge: Operation not supported

It doesnt work, because wlan1 is in managed mode. But Windows 7 can bridge 2 Wlan cards when one is AP and another one is STA. How to do it in Linux?

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Ubuntu Networking :: OpenVPN Server With Nm-managed Wifi Uplink?

Feb 7, 2011

I'm attempting to set up a VPN server on my box using the nifty HowTo posted here: [URL]

My setup is as follows:wifi0 --> Internet; managed entirely via nm-applet (NetworkManager)
Where I'm running into trouble is in the creation of a bridge interface (br0) to bridge future VPN clients to my local network.

The guide(s) say that I need to screw around in /etc/network/interfaces to setup br0 and [eth0/wifi0] accordingly. The problem is that when I specify a configuration of any sort for wifi0 (my only choice for a network uplink), it disables nm and I am unable to configure my wifi in any sort of sane way after reboot... Further info: this "server" doesn't move, and always always connects to the same wifi hotspot that is also nailed in place.

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Fedora Networking :: Eth0 Connection Failed - Device Not Managed By NetworkManager

Aug 10, 2010

Yesterday I did an upgrade and today my box is unable to connect to the internet.

I have tried another cable, it didn't help.

Basically NetworkManager does not connect eth0 to the network, if I try to run ifup from the command line I get:

Code:

I can see in network configuration settings, that the device has been correctly detected and eth0 interface is correctly activated, yet when I try to uncheck the box manage by NetworkManager and start it manually, it tells me that the cable is disconnected... I've tried two different cables, different ports on my router - no help.

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Fedora Networking :: Bridged Networking And NetworkManager - No Network Connection Because Network Isn't Managed

Mar 2, 2011

I have installed qemu/kvm and created a Bridged network connection which works just fine(Windows 7 VM won't work in NAT mode.)

But when I try to use NetworkManager it says that I have no network connection because the network isn't managed, (I set the settings in ifcfg-br0 and ifcfg-eth0 to be managed)

The real problem is that now I can't use my VPN connections (I have many) in NetworkManager.

Is there a way to have both of these pieces of functionality?

I am using FC14

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Ubuntu Networking :: Error - Remote Port Forwarding Failed For Listen Port 5500

Aug 7, 2010

When I use the following command:

ssh user@ssh_server -L 5500:localhost:5500 -p 22

everything works fine. I can log in, and local port forwarding is done. Otherwise when I use the command:

ssh user@ssh_server -R 5500:localhost:5500 -p 22

I get an error "remote port forwarding failed for listen port 5500". However when I try remote port forwarding in WinXP by use of putty there is no problem...

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Networking :: Use Iptables In Order To Forward All The Incoming Packets For Port 5555 To Port 5556?

Apr 4, 2011

I'm trying to use iptables in order to forward all the incoming packets for port 5555 to port 5556 on the same server (192.168.2.101).

I wrote the following commands:

iptables -A PREROUTING -t nat -i any -p tcp --dport 5555 -j DNAT --to 192.168.2.101:5556
iptables -A FORWARD -p tcp -m state --state NEW -d 192.168.2.101 --dport 5556 -j ACCEPT

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Networking :: Iptables Can't Port Forward (PAT Port Address Translation)?

Feb 20, 2010

I'm using a Debian servers, as router/firwall.. I've two ethernet interfaces into the server, one for wan and one for lan. The i use SNAT so my LAN clients can access the internet throgh the debian router. That is working... Now i want to be able to access servers on the LAN site from the WAN site, and i wanna use port address translation (PAT). I have a FTP server running on a lan server, so i'm trying to portward port 21.

iptables -t nat -A PREROUTING -p tcp -i eth1 -d (WANIP) --dport 21 -j DNAT --to 192.168.1.2:21

When people try to access my FTP from the WAN site, they are redirected to the local FTP server, and they are promted for crendentials, but when the credentials are typed, and the local ftp server should answer the wan request, the connections dies.

The wan clients are being promted for credentials, so they are redirected to the local lan server, but after that the connections dies, so i think there is some kind of nat problem, when the local lan server is trying to respond to the wan request..

Here i my iptables script:

#flush table
iptables -F
#input regler

[code]....

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Networking :: MULTICAST Address And Port - Socket Listen Only On Port?

Feb 12, 2009

I make an application on GNU/Linux which listening on a MULTICAST stream, so I open my unconnected socket, bind it on a MULTICAST address and a port, join the multicast group with the "setsockopt (IP_ADD_MEMBERSHIP)", then I receive datagram on my socket.

Now I've two different instances of the same application that run with their own MULTICAST address and port. And what I found strange is that, after a misconfiguration, I switch the ports, for example:

Emitting on 225.0.0.1/23451 and 225.0.0.2/23452
Receiving on 225.0.0.1/23452 and 225.0.0.2/23451

And my receiving part doesn't care about the MULTICAST address, it looks like the socket is listening on the port number only! I mean that the receiver [225.0.0.1/23452] take its datagrams from emitter [225.0.0.2/23452] and vice-versa!

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Ubuntu Networking :: Port Forwarding Through A Specific Port?

Jul 14, 2011

I want to set my ip as static and port forward it through a specific port can anyone help me with this im using ubuntu 10 with 64 bit OS

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Networking :: Directing Packet From One Port To Another Port Of Another Machine

Apr 25, 2009

How can i redirect data received on a port to another port located in a different machine? Can i do this using IPTABLES ?

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