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

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net use encountering “System error 67 has occurred.” when trying to map from script running as service

I have a service running, on windows Server 2008 R2, which requires access to a webdav mapped drive, for copying file dependencies. Everything works when I run net use from command prompt: net use z: ...
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13 views

Cannot get internet connection on ether2 of mikrotik ccr1009

I bought a new ccr1009 mikrotic router. The source(ISP) network lands on ether1. I want to configure ether2 to use DHCP for wireless users but I can't even get ether2 to connect to the internet ...
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1answer
24 views

Accessing Windows file share with many small files very slow over D-Link DES-1024 R+ switch

I'm investigation a strange problem in our network. Two Windows XP machines access a file share on a Windows 2000 Server (which is a VMWare ESXi VM). Both are connected to that server via a D-Link ...
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2answers
29 views

Server 2008 R2 freezes while copying data from network

Running a fresh installed Server 2008 R2 Standard (x64) with SP1 as a single HyperV host. This server has to replace an "old" 2008 R2 with a couple of HyperV VMs stored. After shutting all guest ...
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2answers
49 views

How to set hostname if hosting multiple servers on the same machine?

I'm learning about setting up my own web and mail servers, and I've been confused about this question for days, and articles online (including Server Fault) seems to be so inconsistent with their use ...
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1answer
18 views

Ubuntu 14.04 LTS - SSH and VNC cannot be connected infrequently / connection loss

sometimes it seems to be impossible to establish a connection to this server. Later when a connection could then be established I am not able to see any hints what was causing this behaviour. When I ...
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1answer
25 views

Only one IP Rule Being Implemented

I have server that has a 10g card in it. I need to configure that server so that for a particular IP address (172.16.2.180) traffic goes over two 10g Ports, the second needed for failover . The ...
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2answers
46 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 ...
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1answer
33 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 ...
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0answers
12 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 ...
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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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22 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 ...
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15 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 ...
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0answers
13 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) ...
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1answer
32 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 ...
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0answers
14 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
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1answer
43 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 ...
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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 ...
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3answers
45 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 ...
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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 ...
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2answers
44 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 ...
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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 ...
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31 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) ...
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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 ...
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0answers
14 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 ...
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8 views

HAProxy resetting backend connections

I'm in the process of setting up a series of servers as proxies to our application server, primarily to obscure the application server's IP as part of a suite of anti-DDOS measures. My goal is to ...
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0answers
39 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 ...
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0answers
18 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 ...
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1answer
52 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 ...
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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 ...
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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 ...
27
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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 ...
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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 ...
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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 ...
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2answers
66 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 ...
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0answers
17 views

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

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 ...
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0answers
31 views

Looking for network description language (DSL) [closed]

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
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1answer
50 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 ...
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0answers
12 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 ...
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0answers
18 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
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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
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1answer
30 views

At my wits end about slow application response [closed]

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, ...
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0answers
7 views

m_split reverse operation for mbufs [closed]

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 ...
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0answers
19 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 ...
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0answers
28 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 ...
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1answer
28 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 ...
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1answer
22 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 ...
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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 ...
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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 ...
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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 ...