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0
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1answer
15 views

force dnsmasq to bind an interface for DHCP

I want to use dnsmasq with two configs on two interfaces, which should be bound locally. If you read the manpage, it looks like interface=wlan0 bind-interfaces should do the trick. But it always binds ...
0
votes
1answer
15 views

Quering history of network interface in zabbix server return empty set?

I've installed Zabbix on Ubuntu. Although I can see a "graph" and related "latest data" for all network interfaces in Zabbix front-end, there is no data for them when I directly query MySQL database!...
0
votes
1answer
32 views

public interface not listening by default centos 7

I have two NIC on my system with centos 7 as OS. One interface is public with ip 172.68.122.120 (em1) and second with ip 10.11.15.20 (p4p1). Now When I reboot my system, bydefault, public ip is not ...
1
vote
0answers
22 views

Let an application use a certain interface

I'm using Ubuntu 15.04. I'm using 2 Interfaces, but I need to let application use the second interface (in my case, eth0:0, the first one is named eth0). Is it possible? Or, if not, is it possible ...
1
vote
1answer
53 views

CentOS 7 statically configured network adapter keeps getting DHCP address

This is driving me nuts. I have a CentOS 7 system. It is acting as DHCP for the network it is attached to, is running Cobbler and PXE, but it is not the gateway. It is the primary file server for ...
0
votes
1answer
31 views

How to change interface language of sql server 2008?

As you can see in the image below, the SQL Server Interface language is in Spanish and I want to change to English. I tried my best to find a way to change it without uninstalling this Spanish ...
0
votes
1answer
29 views

Default login information on web apps unsafe?

I'm sorry for that novice question, however as a beginner I'm wondering: isn't there a security problem if I deploy an application (e.g. on Tomcat) and I can access this via a Web-Interface, where I ...
1
vote
0answers
29 views

How to use virtual interface as default interface

I've got a cloud SSD VPS @ OVH, and I'd like to change the default interface used for requests. I have two interfaces: eth0 (which is the default interface) and eth0:0 (which is the new virtual ...
1
vote
1answer
40 views

How do I set Ubuntu server to two static IP addresses and proper routing with two interfaces

I'm trying to set up the routing table on Ubuntu 12.04. The network environment is as follows: server -----eth0 192.168.0.1 (DMZ)---LAN----10.13.x.x Because the communication between 192.168.0.1 ...
-2
votes
1answer
41 views

How to figure out what is the gateway and interface in routing table [closed]

So I've got this simple yet very confusing at least for me problem, to determine what is the interface and ip next gateway from a router to network. Lets say we got setup like this - . And if I ...
0
votes
1answer
25 views

How can i assing ip_local_port_range for different network interfaces

I want to ask is it possible to specify different port ranges (ip_local_port_range) for different physical interfaces on the same PC. Or is it the same for all physical interfaces.
0
votes
0answers
104 views

How can I forward UDP Multicast between two interfaces on Linux?

I have 3 Hosts (A,B,C), all with two network interfaces with, lets say, following ips: - A: - eth0 :192.168.0.2 - eth1: 10.0.1.1 - B: - eth0: 192.168.0.3 - eth1: 10.0.2.1 - C: - eth0: 192....
1
vote
0answers
33 views

Multiple IPv6 addresses added to interface, now IPv6 not working on my server [duplicate]

I got /64 IPv6 block from my server provider. When I add few IPv6 addresses (maybe 10 or 20) to network interface. Everything works fine about IPv6 network. When I'm added above 500+ IPv6 addresses ...
0
votes
0answers
23 views

Assigning 2 IPv4 blocks to one interface

I have been assigned these 2 blocks by my provider Block: x.x.x.184/29 Usable range: x.x.x.186 - x.x.x.190 Gateway: x.x.x.185 Subnet: 255.255.255.248 And Block: x.x.x.192/29 Usable range: x.x.x....
0
votes
1answer
340 views

%Invalid interface type and number

I am trying to apply a scenario from the Cisco CCENT book where a 2811 Router uses VLANs. I have applied the network as is in the book inside my Packet Tracer. Here is the section in the book and ...
0
votes
2answers
593 views

Debian Jessie /etc/network/interfaces post-up route gateway won't persist reboot

I have a Debian Jessie box with 2 interfaces. I want eth1 to route public traffic on public static IP 1.2.3.4, and eth0 to route mgmt traffic on 192.168.0.55, so I edited /etc/network/interfaces to ...
0
votes
0answers
80 views

Problems with Switch DGS-3420-26SC

I have a new SWITCH DGS-3420-26SC. Look at situation: On the first SWITCH Dlink DGS-3100-24TG, i have three VLANS: VID 99,132,100 99 this is our SERVICE VLAN; 100 this is VLAN of the neighbours ...
2
votes
2answers
80 views

FreeBSD interface up/down monitoring

How to get informed about specific interface status in FreeBSD? ifconfig <ifname> | grep "status: active" works fine but I want to avoid polling and be informed as fast as possible about ...
0
votes
0answers
89 views

How to send answer packets to initial NIC in Windows 2008?

There are two hosts. Both has two NICs. [host1] -- lan -- [host2] | | internet internet host1 - Win Server 2008 host2 - Linux Debian How to route tcp connections to ...
0
votes
0answers
24 views

How to replay online traffic from one interface to another with delay

I 'm searching a way to replay traffic from one interface to a secondary interface. I want to all the traffic (not specific to a tcp port) incoming to one interface will be replayed from another ...
0
votes
2answers
131 views

How to add persistent route for 2 VPN connections when interface # varies?

I need to configure split tunnelling with persistent routes for 2 VPN connections on the same computer as the user needs to connect to 2 different corporate servers at the same time. I have a problem ...
0
votes
0answers
3k views

Add static route on Ubuntu 14.04 server

I have set up Ubuntu 14.04 server on a machine and configured /etc/network/interfaces with two gateways. The default one is em1 which is fine, but I need traffic to a specific IP address on the ...
0
votes
2answers
125 views

Assign VLAN to multiple ports in SonicWALL TZ300

I have a SonicWALL TZ300 with Cisco SG200-08 smart switches. My X1 interface is my WAN and my X0 interface is the default LAN. My X2 interface is 192.168.1.1 and is in a custom public zone (LAN2). I ...
1
vote
1answer
227 views

Configure bond using mode=4 (802.3ad)

I have a Debian 8 system with two NICs I want to bond. My managed switch is already configured to link aggregate the two ports I'm using. On the linux box, I have installed ifenslave. In /etc/...
1
vote
1answer
50 views

VMware Guest machine NIC errors

I am running Linux CentOS 5.11 with 32bit Arch I have seen NIC generating many interface errors [root@centos5 ~]$ /sbin/ifconfig eth0 eth0 Link encap:Ethernet HWaddr 00:0C:29:97:C0:0E ...
2
votes
2answers
233 views

Debian Linux routing additional IP to LXC

I'm trying to route an additional IP of my server from Hetzner to a LXC instance (on Debian Jessie). I've found this guide http://www.jotschi.de/technik/2012/04/18/hetzner-lxc-linux-subnet-...
2
votes
0answers
148 views

Can't communicate between multiple interfaces on same subnet

I have multiple ethernet interfaces on one machine, all on the same subnet. Normally these are set up to run on separate VM's, and I understand the limitations imposed by Linux as described here, but ...
1
vote
1answer
42 views

Linux Interface configuration

May i have some question about interface configuration ? I want to use 4 ports gigabit bonding on centos6. Is linux limited speed below full ports( 4 * 1GB) by default or not? I cannot use speed more ...
0
votes
1answer
64 views

OpenVPN - connect server as client to itself

I have tried to setup a small openvpn network but I ran into one big problem. I have a server and a machine at home. So I created a openvpn server on my machine and a configured the client on the ...
1
vote
0answers
90 views

functioning of virtual interface on Linux [closed]

I am trying to understand the working of virtual network interfaces in Linux environment. Specifically, 1. I have created 2 virtual WiFi NICs in an Ubuntu 12.04 Machine with physical Atheros Wireless ...
0
votes
0answers
33 views

Expert iptables Nat - Virtual interface ip address issue

I've been looking information related to this problem several days, I had no luck finding a concrete explanation. Explanation about this issue: With this command I redirect one ip to another ip in ...
-2
votes
2answers
235 views

What does the command “ifconfig <interface> 0.0.0.0” do? [closed]

The question is direct, what does the given command do, and what is it used for? ifconfig <interface-name> 0.0.0.0 I know that 0.0.0.0 means all IP addresses on my local machine. Also if I ...
4
votes
1answer
360 views

Debian - static ip, /etc/network/interfaces

I tried to set a static IP on my Debian 8.1 (in VirtualBox), so I edited the /etc/network/interface file : # The loopback network interface auto lo iface lo inet loopback auto eth0 iface eth0 inet ...
0
votes
1answer
92 views

Specific host file for interface with dnsmasq

I use a VPN on an interface, e.g tun0 (2.2.2.0/24), while the LAN network is on the interface eth0 (1.1.1.0/24). I use dnsmasq to route specific addresses to my LAN and these addresses have their ...
3
votes
1answer
2k views

Fedora 21: Firewalld (firewall-cmd) won't PERMANENTLY assign interfaces to zones?

I installed Fedora on this one machine which is EXCLUSIVELY a gateway / firewall system. Following installation, I ran 'yum upgrade', and so it should be up to the very latest Fedora 21 - I'm a ...
3
votes
3answers
74 views

Can't consistently ping both networks of multihomed host

I have a host which is multihomed, eth0 is on 172.31.254.0/24 and eth0.10 is on 172.31.253.0/24 . Obviously eth0.10 is a subinterface on vlan id 10. From this host I can succesfully ping hosts on ...
0
votes
1answer
43 views

Can I easily change Sonicwall's rules from one interface to another if I physically change interfaces?

In our Sonicwall, we want to unplug our cat5 cable from X0, and instead use a optical fiber into X16. But this would mean changing all our rules (we have many VLAN sub-interfaces and firewall rules). ...
0
votes
1answer
56 views

reg query inside unknown keystring

Is there a way to reg query into an unknown keystring? What I mean by this is if I do reg query HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\ the entries will ...
1
vote
1answer
98 views

2 nics and 2 public ips

I have a server with 2 nics (interfaces) running ubuntu 14.10 I need to connect each nic to a different router (each being a gateway to different internet connections from different ISPs. I also ...
-1
votes
1answer
749 views

device vs interface vs connection under linux with nmcli [closed]

What are dependencies and relations between device, interface and connection in nmcli cmdline utility under linux? The below questions are asked in context of nmcli and networking in linux: Which ...
0
votes
1answer
102 views

Setup openvpn as interface device only

I just setup OpenVPN client using this guide on The Geek Stuff But now (somewhat as expected) all my traffic is routed through the VPN. I actually just want to set up the interface device. Does ...
0
votes
2answers
184 views

Is it possible to configure carp using /etc/network/interfaces?

Lots of tutorials out there show to set-up carp using ifconfig: https://www.netbsd.org/docs/guide/en/chap-carp.html I'm wondering if it's possible to do the same using /etc/network/interfaces? For ...
2
votes
2answers
395 views

How does Linux pick which network interface to use?

Let's say I have a machine with two network adapters on different subnets, eth0 (10.0.100.5) and eth1 (10.0.200.5). Assuming both subnets have routes to the internet (though their own NATs) and to the ...
0
votes
1answer
4k views

Adding static IPs on a p1p1 interface in ubuntu 14.04 [duplicate]

I'm wondering if anyone can give me a rundown for networking configurations in ubuntu when the interfaces are p1p1 etc. I have tried p1p1:0 (like eth0:0) for secondary IPs to no avail. If someone ...
0
votes
1answer
131 views

how to connect/bridge two interfaces on different processes

I have two processes A and B (simulating real hardware device), each with their own TAP interfaces. If I want to send an ethernet packet to A, I send it on interfaceA, and similarly if I want to send ...
0
votes
1answer
170 views

Can we add post commands with the salt network module?

I'd like to add post-up and post-down commands to my network interfaces. Can salt.states.network do that ? If not what would be the best way to add them using salt knowing that I can't simply add ...
-3
votes
1answer
680 views

ssh on eth0, everything else on eth1 [closed]

I wouldn't even consider myself an iptables novice user, so I was wondering if someone could please help me to do this: I want to be able to ssh into one of my servers using the eth0 network ...
7
votes
2answers
2k views

Packet captures: filtering on RX vs TX

I have a network problem where frames with a source MAC which matches with one of my host's source MACs are arriving at the host - an apparent duplicate MAC, or loop, or other L2 problem. I believe ...
-2
votes
1answer
466 views

Web Interface to sharing files on a server with automatic deletion after x days [closed]

I currently have access to an FTP server, with files uploaded onto them. I was interested in knowing how to: Automatically delete files on a specific folder on the FTP server which are x days old? I'...
0
votes
1answer
278 views

Linux: Duplicate network interface to simulate link failures

I run Ubuntu. I need to add some latency and/or some network errors to see if my application can handle with network failure ( connecting & disconnecting ). I found "tc" tool which will be helpful ...