search for: promiscuity

On 03/25/09 12:30, James Carlson wrote: > Girish Moodalbail writes: > >> bash-3.2# dladm show-link >> LINK CLASS MTU STATE PROMISC OVER >> e1000g0 phys 1501 up off -- >> e1000g1 phys 1502 up on -- >> > > That (plus or minus some column alignment) seems

Hello all, Playing with Xen on GNU/Debian Lenny, I just discovered that all my virtual network cards are in promiscuous mode by default. Changing that manually does not seems to change anything (that is, everything still works great). Is there any reason to have virtual network cards in promiscuous mode ? And where can I change this default behaviour ? Thanks, JB

Hello, I have been using the bridging facilities provided by Linux (vanilla 2.6.7 SMP with UML skas host patch applied) to bridge a regular physical ethernet network (on interface eth0) with a virtual network (on interface tap0, cf uml_switch, http://user-mode-linux.sourceforge.net/networking.html). A couple of virtual machines (run using user-mode linux, a tool that enables you to run linux

hello all- and a happy holiday to all you geeks that are in front of the crt! I found these log messages in my logs and I am not sure what some of them signify. Dec 23 19:08:39 smtp kernel: Limiting closed port RST response from 221 to 200 packets/sec Dec 23 19:08:40 smtp kernel: Limiting closed port RST response from 241 to 200 packets/sec Dec 24 05:32:34 smtp kernel: fxp0: promiscuous mode

Hi, I would like to ask concerning problems after installing xen 3.3 on Centos 5.2 I use 2.6.18.8-xen (xen3.3.1 testing - installing with mercurial). After done with make world and make install, I did mkinitrd and placing it in /boot changing the grub and reboot.. succeded I do not install libvirt and the domUs from the previous xen 3.0 (built-in Centos 5.2) are NOT able to start : [root@wing

Hi there -- I want to have eth1 on my system run in promiscuous mode. I modified the /etc/sysconfig/network-scripts/ifcfg-eth1 file to read as follows: DEVICE=eth1 BOOTPROTO= ... ONBOOT= TYPE=Ethernet ... I reboote the system and when I did an /sbin/ifconfig, eth1 appeared without an ip address. I did a check in the /var/log/messages file and while eth0 is in promiscuous mode, eth1 does not

Can I ask you a quick question? I''ve set up bridge-networking for Xen 4.1 (xen-4.1.3-25.el5.22) and networking was being done properly for Dom0 and DomUs. However, I noticed that Dom0 receives a lot of network interrupts or network packets even when they were not actually meant for either Dom0 or DomU. Now, here are the questions: 1. Dom0 is acting in promiscuous mode, right? 2. If

hi @all sometimes after a reboot the complete network is down the difference in the logs shows: in a failed reboot the eth0 does not entering promiscuous mode; in both cases the eth0 gets sucessful its ip configuration via dhcp - any idea ? the nic is a 3com 3c905C-TX/TX-M and the configuration is a suse 9.3 with xen-kernel 2.6.11.4-21.10-xen and xen 2.0.5.c ----------------[ failed reboot ]

How can I find out that someone is using it's network card in promiscuous mode in a subnet? Thank you!

Hi, I hope someone can help me, I cannot seem to get a system's ethernet interface to correctly work in promiscuous mode... I have a Centos 6.4 system with 2 bnx2 interfaces on it. I have set up eth1 in promiscuous mode and am sending traffic to it using the port mirroring configuration on a Nortel 3510-24T switch. The switch reports that it is sending a fair amount of traffic to the

The 8168B (02) NIC works well except that it does not go into promiscuous mode despite advertising itself in that mode after being so directed with ifconfig. Unfortunately, the little box is destined to be an IDS monitor, so that function is essential. The board is an Intel Atom 330 run as x86_64, the nic is internal. We tried three drivers: the one in the 2.6.18-128.1.10.el5 kernel yields

Hi Folks, I have a snv_105 sxce host that I just can''t get to work as expected with crossbow + zones. My test host persephone, is a virtual machine running under VMware ESXi 3.5, with 2 virtual network cards (e1000), all on the same flat network/subnet. It started life just 2 days ago with a clean install of snv_95, and I LUed to 105 yesterday. To rule out any sharing issue, the first

Good day. Found strange behavior in PV-domains. Application like tcpdump or iftop require promiscuous mode for interface. And this feature is disabled by default, as I understand. message from iftop: pcap_open_live(eth0): eth0: You don''t have permission to capture on that device (socket: Address family not supported by protocol) As I understand promiscuous:on in other-config for vif

Hi, I saw a nice mail about bridging in Xen at http://article.gmane.org/gmane.comp.emulators.xen.user/9538. Can I ask you a quick question? I''ve set up bridge-networking for Xen 3.0and networking was being done properly for Dom0 and DomUs. However, I noticed that Dom0 receives a lot of network interrupts or network packets even when they were not actually meant for either Dom0 or DomU.

On Wed, May 31, 2017 at 3:56 AM, Julien Viard de Galbert via Syslinux <syslinux at zytor.com> wrote: > This extra socket cause the EFI udp stack to duplicate every packet > to be able to provide them to both udp_reader and socket->net.efi.binding. > The ones in socket->net.efi.binding were never read so they accumulated in > the stack on EFI side making the stack slower and

As a heads up to everyone, VMware requires you to take special precautions when trying to put a virtual nic into promiscuous mode, which is required for Xen networking to work. I spent a fair amount of time diagnosing Xen network problems when it wasn''t Xen at all. As I was just beginning to learn Xen, I was convinced it was something I was doing wrong, when it wasn''t at

Hi, I am trying to set up a uPnP server on a Linux box (Debian Sarge Stable kernel 2.6.8). uPnP works using multicast packages for locating servers. This does however seem to fail unless I set the relevant NIC in promiscuous mode. If I do so, it works well. I have added ip route add 224.0.0.0/4 dev eth0 and echo 1 >/proc/sys/net/ipv4/ip_forward and the kernel is set up to enable

Hi List, I''m in the process of setting up softflowd 0.9.9 on a Centos 6.4 system (compiled from source tarball). The daemon will listen to an unused interface that is receiving port mirrored traffic (a.la. Span port) I am planning on using the softflowd init script and sysconfig file provided in the tar ball. Do I need to manually put the unused interface into promiscuous mode, or

Hi, I am looking for some direction on how to configure KVM networking so that a promiscuous bridge/host nic/guest nic allows two different network monitoring packages to sniff the same physical traffic. The idea is to run a commercial package on the CentOS 6.5 host and Snort, via Security Onion, on the guest, both being fed by a physical switch SPAN or physical firewall TAP. The host has two

I inherited a xen server that is setup to have all the VM images hosted on an iSCSI mounted NAS array. We been experiencing a random (about every 2-3 days) issue where xen would crash all the VMs, leaving nothing but the Domain0 running. What appears to be happening is something causes the iSCI mount to hiccup. Running "vgchange -a y" and restarting all the VMs brings everything up.