Networking refers to the technologies and techniques that enable the interconnection of devices and applications allowing them to communicate electronically.

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1
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2answers
21 views

How to measure and monitor available network bandwidth without stealing network bandwidth?

Please note that I am not asking for well known usual bandwidth monitoring tools like ntop, iperf, vnstat etc. I would like to measure periodically and reliably the max. available bandwidth of a ...
0
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0answers
16 views

FreeBSD 10.1 routing issues

I have FreeBSD based router in my campus. Trivial configuration for these types of routers: two interfaces, one of them looking to the outer internet, second - to the local net. In my local net ...
0
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0answers
9 views

Troubleshooting multicast on Ubuntu 14.04 server

I am troubleshooting an issue with multicast on an Ubuntu 14.04.1 LTS server. I have a simple client that subscribes to a multicast group and waits for data. The subscription is successful and shows ...
0
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0answers
6 views

Bridged Networking doesn't work. Host Windows 7, Guest Ubuntu 14.04. Tried everything [migrated]

it's quite popular problem and I've seen many solutions, but none of them worked for me. I've created virtual machine with Ubuntu 14.04 and haven't changed anything in Ubuntu configuration. With NAT I ...
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0answers
20 views

What are the minimum server hardware requirements to run tracking system? [duplicate]

I want to build an app to track public transit buses. The data will be collected from users based on crowdsourcing and transmit to the server. Interested user will get the current location of the bus ...
0
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0answers
13 views

How to access connected devices to a remote router using OpenVPN?

After much confusion I have finally managed to connect Windows 7 box to a remote 3G router using OpenVpn. The Windows 7 box is set to run as a OpenVPN server(10.8.0.1) and the 3G router is set as a ...
-2
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0answers
12 views

IB(InfiniBand) vs FC(Fiber Channel) [on hold]

I need to understand the Performance, TCO(Total Cost of Ownership) and Long Term Service Cost comparison of IB(InfiniBand) over FC(Fiber Channel) ...
0
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1answer
28 views

One way connection to different network [on hold]

I'm wondering, if something like this is possible. device 1 -> 172.20.35.1 netmask 255.255.0.0 gateway 172.20.1.1 device 2 -> 192.168.170.100 netmask 255.255.255.0 device 2 has no default ...
0
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0answers
16 views

How to pass all traffic through virtual ip on linux

I have an Ethernet card on CentOS server. It has been configured: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000 link/ether 40:f2:e9:9b:b7:bb brd ...
-2
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0answers
13 views

Set Static IP Address and Find MAC Address of OpenSUSE [on hold]

I am new to Open SUSE Linux. I need to configure static IP address to Open SUSE and find the MAC address of the NIC. I go through several documents but still I couldn't find the answer. If you guys ...
2
votes
1answer
32 views

PFsense https connections unusably slow

I have a very strange issue with PFsense as router running in KVM with CentOS 7. https connections are incredibly slow (10KB/s or less), and uploads over https simply don't work; for example using ...
-3
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0answers
50 views

Networking solution for 350 employees [on hold]

I need to come up with a networking solution for 350 employees, which are located on 3 floors. The network should provide file sharing, VPN and resource sharing (printer, scanners) I also need to come ...
1
vote
3answers
43 views

How can I diagnose and prove network micro-cuts?

I am unable to keep several types of long running connections open from my office LAN (ADSL) and I need to convince the service provider that there is a real problem. Standard pings and traceroutes do ...
1
vote
0answers
10 views

Force the GPL/PV driver to a lower link speed

I'm running Xen 4.4.0 on Ubuntu 14.04. On this Dom0 I am running: 1 DomU Ubuntu 14.04 with Shorewall 1 DomU Windows Web Server 2008 R2 with GPL/PV drivers Both domUs connect to the same bridge ...
2
votes
2answers
43 views

Why Ping starts showing results only after a minute

I am running a Solaris 11 system over a local private network 192.168.100.0/24 and I run ping -s to get continuous ping. From the Gateway to my server I get root@mygateway:~# ping -s 192.168.100.42 ...
-5
votes
0answers
13 views

Wireless Connectivity using a Leased Line [on hold]

how to setup a good internet connection(WiFi.) USING LEASED LINE for maximum 100 devices. all 100devices wouldn't be connected at a time....no.of connected devices would vary .(also specify the ...
0
votes
0answers
28 views

wondershaper doesn't work for redirected traffic

I'm trying to prioritize my network so small packages get through quicker so latency-dependent applications don't get unusable when downloading/watching videos. I want to use one pc(with one nic) ...
-1
votes
0answers
10 views

Disable dynamic routing in freeBSD

We have a FreeBSD load balancing server with Real servers in different VLANs. Sometimes we used to change the static routes of the VLANs in switches. While reverting back the static routes the Real ...
-1
votes
0answers
12 views

Route port forward through 2 windows server 2008R2 network adapters to another network

our phone system at work is on a separate network to everything else and I need to forward a port from our gateway to it to allow our phone tech to remotely administer it. I have plugged the phone ...
0
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0answers
32 views

Unable Join SOME 64 bit Windows 8.1 Pro Clients to Windows Sever 2003 Domain

We just deployed 12 brand new Windows 8.1 Pro 64 bit client machines. They are all identical models and all wired identically to our network/server room. 8 of the machines joined the domain with no ...
-1
votes
0answers
17 views

Are there wifi routers that provide good connectivity over a very short range [on hold]

Looking for a solution to extend a secure closed system with wifi. The goal is to allow client devices to move around a shop floor without losing connectivity but lose connectivity if taken near to ...
1
vote
1answer
50 views

How to troubleshoot internet unreachable periodically through firewall

Periodically the internet is unreachable on my network, sometimes for 30+ minutes. After testing a direct connection to our modem, I realized this was not a problem with our ISP but the network ...
0
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0answers
28 views

Router to Firewall to Internal network NAT with Single Public IP [migrated]

In an effort to learn more about networking I have picked up some old Cisco equipment for home use. I have a 2811 router, a PIX 515e firewall, and a switch (don't remember the model). My incoming ...
0
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0answers
3 views

Debian Network-manager, how is the steps of connections to a captive portal [on hold]

now a few days ago I'm looking how the network-manager works to automatically open to the browser when connected to a captive portal. I know Windows and Apple need to have their own domain hosted ...
25
votes
4answers
7k views

Users with Google's IP address. How is it possible?

I have a spanish website and I do not allow people from non-european countries to register and to login. Some time ago I started to receive messages from users who can not login. When I ask for their ...
0
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0answers
12 views

Epicor Software Client issue [on hold]

we have facing some issue with epicor server ,user request to migrate their network to vlan and different vlan with epicor server before migration user and server are same vlan is working well with ...
-1
votes
2answers
27 views

Open port to only one external IP address

I am having trouble with unwanted traffic on a certain open port and want to lock the open port so it only allows incoming traffic from One single external IP address. I have had a Google and cant ...
0
votes
2answers
57 views

Port scanning from VM users

After receiving an Abuse Notice from my server provider, i was wondering how they make to check up all my traffic and send me these abuses. I would possible like to know if there is some kind of ...
0
votes
0answers
17 views

Internet traffic counting software for Linux / FreeBSD router? [on hold]

Are there any (popular) software to count traffic passed via Linux / FreeBSD router? "Traffic" means number of bytes per month per provider (WAN). Additional details (for example, per shorter ...
1
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0answers
31 views

Looking for network description language (DSL) [on hold]

I'm looking for a domain-specific language that is focused on building networking definitions (transport, services, ports, interfaces, probably some failover configuration, etc.). I plan to use it to ...
1
vote
1answer
44 views

Allowing Internet traffic into DMZ using Azure Network Security Group

I am trying to create a simple DMZ using Azure Network Security Groups, using a Barracuda WAF as the public entrypoint into the DMZ, however I am having some trouble allowing internet traffic to ...
0
votes
0answers
11 views

kvm guest not able to reach anything other than host

I'm trying to setup KVM on a vm in my esxi instance. The vm is ubuntu 14.04 and I have enabled virtualization for my vm. I want to use bridged networking for the setup. I can get the guest up and ...
0
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0answers
17 views

M6220 Configuration Assistance

I'm trying to setup an M1000e chassis I just received. I know about nothing related to networking, but I'm good with the hardware and software components of this system. Here is my situation and ...
2
votes
1answer
28 views

Restarting HP 1810 without writable SNMP?

I have been tasked with finding a way to reboot all of my switches for a bunch of small satellite sites every night when everyone is gone. I have HP 1810-26G switches at most of the sites, which is ...
0
votes
1answer
30 views

At my wits end about slow application response [on hold]

I'm hoping someone can help me with this seemingly impossible task. We have several internal applications in my company that is used by employees at multiple locations with no issues. Out of the blue, ...
0
votes
0answers
6 views

m_split reverse operation for mbufs [on hold]

I need to perform an operation to combine two mbufs as a single mbuf pointing the complete data by both the single mbufs. For instance, if mbufA --> 0xA0 to 0xB0, and mbufB --> 0xB0 to 0xC0 and these ...
0
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0answers
16 views

Docker container needs access to a few vlan interfaces on host

I have a debian box, with a lot of vlan interfaces iface vlan4003 inet static address 10.254.25.249 netmask 255.255.254.0 mtu 1500 vlan_raw_device eth1 iface vlan4004 inet static address ...
0
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0answers
25 views

BroadCom 5720 Multi-Switch Connection failing to achieve full bandwidth

We have following Setup: 2 redundant Dell 2848 Switches, identically configured and connected via 8-Port LAG on Ports 41-48. 2 identically setup Dell R730 with BroadCom 5720. Operating System is ...
-1
votes
1answer
27 views

measuring network throughput with netperf

I'm doing benchmark test of Linux server using netperf. According to information at networksecuritytoolkit the theoretical max throughput rate for 1514-bytes packets is 117.35 Mbp/s. However I'm ...
0
votes
1answer
21 views

enable lacp mode active on isr 2951

Any idea if ISR 2951 support LACP ... i don't see any cli command to enable it. My router IOS version is 15.2(4)M7. Can you help please. below is my config: interface Port-channel1.1 description ...
0
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0answers
18 views

MAC to MAC MII interface not working [migrated]

I have a MAC to MAC MII interface between MPC8569 processor and BCM68610 controller , whose schematic design is followed from here. My linux kernel version is 2.6.32. I want to ping one device from ...
1
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0answers
47 views

Bridging two datacenters

i need to find out what would be best way to bridge current datecenter with new DR datacenter. I have following network configuration (show in picture). http://i.imgur.com/7bohb3I.jpg So on internal ...
-1
votes
1answer
46 views

Out of 2 VMs and their 1 host, only 2 at a time are reachable from the LAN

I have a VMware vSphere hypervisor set up with two VMs. I need to be able to reach the host (for configuration, etc.) as well as both VM's from my client (which is also in the same subnet). I want to ...
0
votes
3answers
50 views

Linux network interfaces take so long to come up

When any of the network interfaces on my x86 server comes up (1GbE port with igb driver, or 10GbE port with ixgbe driver), whether it's been done using ifup or by enabling the switch ports it's ...
1
vote
1answer
47 views

How do I get a network interface up in rhel 7?

I was given a rhel7 vmware template to use for provisioning rhel 7 test environments. When I created my vm, it booted up fine except that my network interface doesn't seem to come up. If I type ...
0
votes
1answer
37 views

CoreOS - Starting Docker containers on specific VLANs

This is an addition to this question about how to setup VLANs on CoreOS [CoreOS bare-metal vlan networking. My question after is after you set this up, how do you use it? How do you start a ...
0
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0answers
41 views

Cisco vpn access to another router

I am using a Cisco ASA 5505 to VPN into my network (which is working great), and I want to connect to a different network that is on a Asus RT-N66v. For example: network 10.1.1.1 is my VPN and ...
-1
votes
0answers
24 views

Windows Server 2012 PerfNet error: (2006) Unable to read Server Queue performance data from the Server service [closed]

I have seen the Windows Server 2008 bug, but what about Windows Server 2012? PerfNet event error (2006): Unable to read Server Queue performance data from the Server service. The first four bytes ...
2
votes
0answers
30 views

Cisco 3850 flooding all ports because CAM table not populated?

Encountering a strange issue with a Cisco 3850 that is in use as a core switch. It is flooding all ports on the switch with traffic. After investigating more, it appears that the CAM table is not ...
0
votes
1answer
29 views

how do i make my website accessible to the internet without a static ip and from a virtual machine? [closed]

I have windows 8 host and i have installed ubuntu 14.10 server as a virtual machine in vmware. i have installed LAMP server and i am trying to host a website from it. i have created a virtual host. my ...