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Cacti CDEF function to plot several interfaces on one traffic graph

The final graph I want to plot is similar to below graph. CDEF function to plot this graph manually (through command line) is like: DEF:t1=$RRD_PATH:telnet:AVERAGE \ DEF:t2=$RRD_PATH:smtp:AVERAGE ...
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1answer
139 views

Linux: Interface statistics missing packets?

I have a server with a network interface connected to a switch port that is configured to mirror all the traffic that goes through the switch, which means that if I run tcpdump on that interface I see ...
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5answers
2k views

Virtual interfaces with default routes

My Ubuntu Server has one physical interface eth0. I want to assign 3 ip's (different subnets) to the server. I cannot use the default virtual interface creation tools like ifconfig or ip addr add ...
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2answers
279 views

Networkconfig on Debian-based Linuxes

Question: I've some Debian or Ubuntu based servers here with allow-hotplug eth0 and some with auto eth0 in /etc/network/interfaces. What is the difference between them? If I'm correct, both ...
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2answers
554 views

Ubuntu Server gateway networking issues on VMware Workstation

I have two Ubuntu 10 Server VMs on VMware Workstation, using bridged networking. I want to route internet traffic to ServerB through ServerA. At the moment, ServerA can access the internet, but not ...
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1answer
2k views

Syntax for include files in /etc/network/interfaces

I want to organize interface aliases (for example eth0:1) in separate files (/etc/network/conf.d/eth0_1.cnf). Anyone know the syntax to load this external file from /etc/network/interfaces, or where ...
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2answers
821 views

ip over specific network interface

I have two network interfaces with respective ips eth0 : 192.168.70.153 eth2 : 192.168.70.155 when I make route -C Kernel IP routing cache Source Destination Gateway ...
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1answer
90 views

Unexpected auto-route after adding a new /29-Net

I added a new Network to a Debian 6.0.1 x86_64 Linux 2.6.32-5-amd64 Server with this configuration in the interfaces: allow-hotplug eth2 iface eth2 inet static address 172.251.1.86 netmask ...
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2answers
6k views

how to configure modprobe to recognize newly installed driver for eth1 on bootup?

I have a server running Debian 6. My motherboard has two interfaces, eth0 and eth1. Debian does not have a driver for eth1 (e1000e), so I installed the driver provided by Intel (e1000e-1.4.4). ...
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1answer
1k views

IPTables - Blocking ports on eth0:x Network Interfaces

I'm wondering, is it possible to block certain ports on different interfaces such as eth0:0 eth0:1... For instance, if I want to block on eth0:0 ports 22 and 25 and leave those open on eth0:1 I'm ...
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1answer
341 views

Solaris 8: Assign equal priorities to multiple primary interfaces connected to the same network

I have a machine with Solaris 8, and it has multiple interfaces that are connected to the same network which means they all have metric 0 (1 hop) to the default gateway. assume: e1000g0: ...
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3answers
402 views

Linux router with 4 NICs not working

I'm setting up a Linux based router, with 4 NICs, and I can't seem to convince it to work, despite following steps suggested on various web sites. Each interface is on a separate subnet as follows: ...
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1answer
593 views

eth0 doesn't start after interfaces modification

Just installed Ubuntu Server 10.04 on VMWare ESXi 4.0.0 (201167) and changed the interfaces file. My (modified) interfaces file looks like this: auto lo iface lo inet loopback iface eth0 inet ...
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2answers
306 views

Windows to configure IIS Website to use a particular physical network interface

How to configure on Windows 2003 server such that:- when I access my website on the server, it uses IP address A.A.A.A when my program runs it uses IP address B.B.B.B Both A.A.A.A, B.B.B.B is ...
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3answers
27k views

What is a Cisco BVI interface? What is it used for?

I have been Google'd and searched for the answer to these questions, but I cannot find a simple answer. So my questions are about BVI interfaces. What are they? Why do you use them? In what scenario ...
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1answer
276 views

How to config 2 interface with pptp?

In this topic Which is the best OS for PPTP ? : server with this CPU and 2 Intel PRO/1000 network adapters really handles ~2 hour peak of 250MBit/s internet traffic on one interface and ...
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1answer
741 views

Check packet vlan tag using Tap virtual interface

I am trying to learn how to implement virtual interfaces using the Tap driver. So far my understanding is that using the tap driver I can create a virtual interface and then have a userspace program ...
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4answers
439 views

creating interface in linux

I have a tunnel with a third-party computer. This tunnel iface has the ip address of 10.244.248.126. The third-party just told me that there is an ACL that will allow only IPs from the range ...
0
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1answer
153 views

Internet in Ubuntu not working

I have an issue with the internet connection in Ubuntu not working any longer. I have two NIC's. Both static. One with a internet IP and one local. I can SSH into local fine, but the internet IP ...
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2answers
1k views

Hostname resolution in a machine with multiple running eth ports

Consider a machine having 4 eth ports running on it. Then to which eth port's ipaddress will the hostname resolve to? Kindly guide me to some documentation to support your answers so that I could use ...
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1answer
5k views

How do I configure multiple IPs on an Ubuntu server with two Ethernet ports?

I am trying to set up four IPs on two Ethernet ports. I figured I will assign one to each and then create aliases for the remaining two. This is what I did with my limited networking knowledge: # ...
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1answer
1k views

Sonicwall NSA 240, Configured for LAN and DMZ, X0 and X2 on same switch - ping issues

Our Sonicwall vendor supplied and networked the NSA240 when we required a DMZ in our infrastructure. This was configured and appeared correct although VPN users periodically dropped DNS and Terminal ...
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2answers
1k views

How do I configure an interface to have *both* a DHCP address and a static address in Ubuntu?

In a lab setup, I want eth0 on a Ubuntu server box to get a DHCP address for talking to the outside world, and I also want to assign it a static 10.x.y.z address for talking to other boxes on the ...
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1answer
412 views

Strange ifup/ifdown behaviour on Debian Lenny

First of all, here is my /etc/network/interfaces auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 10.10.4.142 netmask 255.255.255.0 gateway 10.10.4.1 auto eth1 iface ...
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2answers
3k views

/etc/interfaces file for multiple gateways, same network? (linux)

I've got my ip routing table setup as I'd like it: # ip r s 10.1.248.0/24 dev eth0 proto kernel scope link src 10.1.248.11 default via 10.1.248.1 dev eth0 metric 100 default via 10.1.248.3 dev ...
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3answers
255 views

debian lenny : problem modifying static ip

i'm trying to change a static ip assigned to a debian VM. I modified the /etc/network/interfaces file but my debian doesn't seem to like the new settings currently the machine's ip is set to ...
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5answers
2k views

Is there any way to force my Linux box to always boot up with a self-assigned IP address?

This is perhaps an unusual request: I'm trying to get a Debian Linux box to always give itself a self-assigned IP address (i.e. 169.254.x.y) on boot. In particular, I want it to do that even when ...
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2answers
3k views

How do I update my /etc/network/interfaces file so the box comes up with ONLY IPv6 self-assigned address?

I apologize for this blatantly newbie-ish question, but I'd like to do this "the right way" and not just muck about until it seems to work, and the documentation I have doesn't seem to address this ...
1
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1answer
125 views

FTP Server Administrative Interface via Web

I am working on creating an FTP server ... I need to administer it via an online web interface. I tried http://proftpd-adm.sourceforge.net/ but I couldn't get it to work. I have even considered ...
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votes
3answers
675 views

Round robin through multiple interfaces

I'd like to alternative between networking interfaces to a particular ip. For example: Request to 192.168.1.5 // uses interface 1 Request to 192.168.1.5 // uses interface 2 Request to 192.168.1.5 ...
0
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1answer
109 views

How to set up a new interface sharing the same physical NIC with eth0 to use a second IP address?

My ISP has bound a second real IP address to my dedicated server, but that new IP does not seem to function. How do I set up an interface for it? I Use Ubuntu 10.04 LTS AMD64 Server OS.
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1answer
377 views

How do bridges really work?

I'm in a major confusion here, regarding bridges. I thought that they were devices that allowed going from one network to a different one without routing (doing the work at layer 2 instead), but if ...
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vote
1answer
598 views

How to configure a second IP address (to bind it to a VBoxHeadless virtual machine then)?

I've requested my ISP to dedicate me a second Internet IP address and have got it. Now I need to configure it (I've never had any experience with using multiple IP addresses on one network interface) ...
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3answers
342 views

Connecting Linux system to switch from 2 interfaces

To get proper redundancy, we've installed 2 switches in our network and connected them to eachother. We now want to hook our servers to both switches. Since all servers have 2 ethernet ports, this ...
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3answers
77 views

Connecting Linux system to switch from 2 interfaces [duplicate]

Possible Duplicate: Connecting Linux system to switch from 2 interfaces To get proper redundancy, we've installed 2 switches in our network and connected them to eachother. We now want to ...
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2answers
1k views

Cisco ASA 5505 (8.05): interfaces do not come up after reload

For some reason, I have to run no shutdown on each real physical interface to get them to come up after a reload. To test, I did the following: write erase to blow away my config, reload and said no ...
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1answer
1k views

interfaces/static IP problem - Debian

I'm trying to configure my Debian machine (Lenny) to use a static ip address. Here's what my interfaces file currently looks like: # This file describes the network interfaces available on your ...
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3answers
573 views

Why is there less latency on loopback than on a carp interface?

Stack Overflow Careers is served up something like so: user -> internet -> our fw -> nginx -> haproxy -> web farm FreeBSD is the operating system in use no firewalling or QoS is in ...
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vote
1answer
1k views

Error loading interface lanplus (ipmitool on CentOS)

I'm having trouble specifying the lanplus interface for the ipmitool program. I issue a command such as ipmitool -I lanplus -U USER -P PASSWORD -H 10.16.0.253 sol activate and I am given the ...
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2answers
749 views

How can I setup apache+mod_proxy so when I connect to mod_proxy on interface X, it sends the traffic out on that specific interface?

We use a service that allots us X number of requests per IP and has allows us to setup 5 IPs with such a limit (I know.. it seems stupid they could not just up the limit 5x on one IP). Pretend I ...
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2answers
337 views

Apple file sharing: bind to a specific interface

My customer have an office small office with just a wifi router. He use this router for internet connectivity and file transfer operations between the desktops. Recently the file transfer activity ...
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2answers
1k views

Virtual Hyper-V Windows 2008 R2 Server Web Console

Where and How can I enable the Virtual Hyper-V Windows 2008 R2 Server Web Console? The IIS is only set up as the default content, nothing more than that. Just to avoid using Remote Connection every ...
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vote
1answer
253 views

How to prevent response to who-has requests on virtual eth interface?

we use small embedded X86 linux servers equipped with a single physical ethernet port as a gateway for an IP video surveillance application. Each downstream IP cam is mapped to a separate virtual IP ...
7
votes
1answer
15k views

Two network adapters on Ubuntu Server 9.10 - Can't have both working at once?

I'm trying to set up two network adapters in Ubuntu (server edition) 9.10. One for the public internet, the other a private LAN. During the install, I was asked to pick a primary network adapter ...
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vote
1answer
148 views

How to fill in the network line in the ubuntu interfaces config file?

I have to configure an ubuntu hardy server network interface. The service hoster told me that this is the network data for the machine: IP Range: 111.111.200.74 to 111.111.200.78 Netmask: ...
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1answer
2k views

Multiple interface NAT routing

I have multiple internet connections from different ISPs and I need to route certain traffic over a particular ISP link. I am using Debian for this. The setup is as follows; eth0 (IP address is ...
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3answers
191 views

Make interface attachment permanent in Xen 3.2.1 Debian Lenny Dom0

I'm trying to add interfaces to a DomU (either on the fly or after reboot) and the attach-interface script works just fine. The problem is that when I reboot the DomU the interfaces added are ...
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2answers
196 views

“Symbolic link” for NICs under Linux?

Currently on my Linux server I've enabled bridging so that I can use OpenVPN in bridged mode. Works great. eth0 is connected to the LAN; tun0 is the OpenVPN gateway; these are bridged to a new ...
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2answers
1k views

Using multiple internet connections?

I have two connections at work. One that I use to get to the Internet and the other to the company related stuff. The problem is that when I want to connect to the work related stuff, I need to switch ...
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2answers
4k views

How to Change a VLAN Assignement for an Interface on a Cisco 3750

I'm having some trouble trying to figure out how to Change a VLAN Assignement for an Interface on a Cisco 3750. I want to change: ! interface GigabitEthernet1/0/3 switchport access vlan 2 switchport ...