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

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3
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1answer
71 views

Windows Server 2012 R2 Powershell IP Interfaces Compartments

If I run Get-NetIPInterface -ifIndex 29 -IncludeAllCompartments, I get one Interface back. There are only 2 Compartments I checked this via @(Get-NetCompartment).Count. The Compartment IDs are 1 and ...
4
votes
3answers
199 views

If I join esxi to an Active Directory domain, how does it choose which DC to authenticate to?

I'm familiar to vSphere and large installations, and not at all familiar with the free products. Topology & configuration We have some branch offices that use ESXi and have a DC resident on ...
0
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0answers
67 views

Best way to divide network?

I own a small company that recently is outgrowing our current network. Currently we have a 10.216.170.0/24 network and therefore only a limited number of available IP adresses. Now, we have a single ...
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votes
1answer
22 views

Can not access the company web site

Trust all you guys doing well today. I have a question. My company website www.miracle-adventure.com cannot be accessed from within the company network. I have a win2k8 R2 DC installed. The domain ...
0
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0answers
107 views

Windows 7 Pro - DNS Servers changed on DHCP-enabled workstations over weekend, not sure how

This morning I came in to our SOHO office (>5 users) to reports of the internet not working. I tried all the usual simple fixes like cycling switches (each user has a switch at their desk) then I ...
0
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0answers
26 views

KVM Networking guest issue due a provider networking limit

I have a KVM setup on Centos 6.4 64 Bits. My server provider assign us a Main IP to the Host with a gateway and netmask. Also our provider assign us additionals IP ( not in the same block as the Main ...
5
votes
1answer
84 views

Can I create a share on a Windows Server Domain Controller for anonymous Mac OS access?

I'd like to have a share on a Windows Server Domain Controller (2012 R2) with Mac software for folks on my company to install from. Not everyone who will have access to this share will have a domain ...
1
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0answers
25 views

Binding ISC DHCPD to a virtual (heartbeat) interface

I had a DHCP server that acted as a relay endpoint and worked fine. let's say this is a solo machine with eth0 with an ip of 192.168.0.10 I needed to bring this server down and join it to a cluster, ...
0
votes
2answers
63 views

Bind9 - local configuration is it important

I have a dedicated server and i have DNS and web server on the same server. To configure the DNS i have used BIND ... BIND comes with default configuration for localhost like 127, 0 , 255 and ...
-1
votes
2answers
35 views

Forward Clients to New Server using iptables

Clients are connected to a server A by connecting to the domain name address www.example.com:4444, where www.example.com resolves to the IP address of server A. Question: In order to provide a ...
0
votes
1answer
75 views

Nginx reverse proxy with same config working in 2 situations and not in 1 (Vestacp)

I have few vps machines with private networking. I'm using nginx in all of them to proxy pass pass requests into fourth machine (10.129.xxx.xxx) which is only listens private connections. I just ...
0
votes
1answer
65 views

Multi-homed network?

I have a network with a layout like this: ******* ****** ******* ****** * SW1 * --------- * R1 * ---------- * SW2 * ---------- * R2 * ******* ****** ...
3
votes
1answer
376 views

Windows Server 2012 R2 performance for Mac OS X Clients (File Services)

I am inheriting a Windows 2012 R2 Server that is experiencing abysmal SMB/CIFS performance for Mac OS X Clients in particular. The server is doing file services and is an Active Directory Domain ...
0
votes
1answer
26 views

windows route not followed

I add a route on the windows network like so: route -p add 46.137.226.16 mask 255.255.255.255 10.20.1.1 The goal is for traffic to 46.137.226.16 to be routed via the VPN/remote gateway on ...
4
votes
4answers
221 views

Centos server keeps jumping to address instead of static assigned address

I have a headless Centos server that I've configured with a static IP address. I've disabled Network Manager, avahi-daemon etc. Whenever I restart the network it just jumps to 10.155.90.100 instead of ...
0
votes
1answer
79 views

zeroshell with multiwan on virtualbox

I'm planning to setup Zeroshell as a router gateway for a school network on Virtualbox. The host machine will run Ubuntu server edition. Then I will install Zeroshell as a guest Os with 4 configured ...
0
votes
1answer
36 views

VirtualMachine is not available from bridged interface outside the local network

I'm unable to connect to any service running in my VirtualMachine from Outside my local network. My VM has the following configuration: eth0 - Host Only Network eth1 - Bridged Network (Therefore ...
0
votes
0answers
32 views

cisco routers IAD881F l2tp tunnel configuration

I have a problem with a couple of cisco routers IAD881F, I'm trying to extend my network between two points via L2TPv3, according to configuration my routers are connected and the tunnel state is UP, ...
4
votes
2answers
169 views

TCP connection through IPSec (Linux/Strongswan) stalls after exceeding PMTU

The backups (via Bacula) of one of my servers (“A”) connected via IPSec (Strongswan on Debian testing) to a storage daemon (“B”) don't finish 95% of the times they run. What apparently happens, is: ...
3
votes
2answers
246 views

What does 'Si' mean with respect to network switches?

I am seeing references to Multilayer Switches with Si as in the network symbol below. What does the 'with Si' qualifier mean?
0
votes
0answers
25 views

Can't clear que for printer on the network

I'm not sure if this is the right place to post this, so forgive me if I am out of line. I'm having some printer problems with our server. When I look at the printer connected to our network, I see ...
1
vote
1answer
72 views

Windows server 2012 two external routes / 2 NICs

Our current server layout has 4 servers running on an external IP address all multi-homed using the 192.168.1.x network for external public access and the 192.168.5.x network for internal ...
1
vote
1answer
32 views

LXC networking not giving outgoing connection

I have a LX container on Ubuntu 13.04 which has worked flawless for the last 161 days. I restarted the host and started all the LXC's and I'm allowed to connect to the LXC containers from the outside. ...
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votes
2answers
85 views

512 IP in one NIC - ubuntu - is this possible? [closed]

Let's say that I have 1 network card and 2 blocks /24 of IP to assign: 150.50.50.0/24 150.60.60.0/24 I know, that I can only add 256 virtual interfaces to each NIC from ...
-1
votes
1answer
33 views

Telnet to localhost 3306 looses connection to host after few seconds

When I try to telnet into my localhost port 3306 which belongs to mysql, it shows me the hello packet, then looses connection after a few seconds. My skip networking is set to OFF, I have started and ...
1
vote
1answer
70 views

vmware esxi host ha state in election

In my Vmware Esxi server 5.1 , 2 host machines which are added as cluster ,there HA state is turned to ELection .I tried Reconfiguring the vsphere for HA it is not working .In cluster it shows issue ...
0
votes
1answer
33 views

IC socket on network cards?

I have been looking at network cards and I have noticed a few of them have this mysterious port on them that looks like an IC socket. I was wondering what this is used for and if it is of any ...
-1
votes
1answer
65 views

How should I properly block outgoing http traffic with iptables

I'm experimenting with iptables, and I'm trying to allow all outgoing requests for HTTPS, but to block HTTP. I have the code below; Chain INPUT (policy ACCEPT) target prot opt source ...
1
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0answers
31 views

Adding old T1s to a new configuration

As embarrassing as it is, my facility is running on two T1 lines. One connects us to AT&T and the other connects us directly to our corporate facility. This is a mirror of an old system we once ...
2
votes
1answer
60 views

Poor network performance on Server 2008 machines

I have a network consisting of about 40 Windows 7 machines (physical) and 2 servers (Virtual, ESX) which are Server 2008 Std ed (one is a SBS 2008 but they're the same 'under the hood'). Network is a ...
2
votes
2answers
132 views

openstack instances cannot access external network

I'm new to OpenStack. I'm using RDO packstack --allinone setup. All openstack nodes reside in one single machine, with only one physical ethernet interface (eth0, 192.168.0.11) I launched two ...
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votes
2answers
39 views

Login before using the internet

How do you setup a user login page in order to connect to the internet just like the one at McDonalds and Radisson Blu? What kind of setup is that? We are in school and would like to have that kind ...
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votes
1answer
62 views

can anyone show me how can i fix error with my NAT config

Can anyone help me with my packet tracer problem? My network 2 buildings (each building has 3 vlans) on the same side and it has 2 sides, between is internet. I finish with DHCP and now I try to ...
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votes
4answers
78 views

How does a host receive an IP if there's no DHCP server? [closed]

If a new host connects to a LAN without a DHCP server, how does it receive an IP?
0
votes
1answer
18 views

How do I discover peers in an Ubuntu VM in an Azure Service?

I'm setting up a few Ubuntu 14.04 (LTS) virtual machines under an Azure Service (Availability Set). I'd like for each of these to be able to discover dynamically at least one other system in the local ...
-3
votes
1answer
49 views

Keeping your server safe [closed]

I have a typical vps server with some custom sites on it running on port 80, a mail server, I don't have a DNS server and it is a default ubuntu 12.04. I don't have any admin panel, I am doing all the ...
0
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0answers
37 views

OpenVPN in bridged mode, confusion about interfaces

I'm trying to understand some fundamental OpenVPN/networking basics. Let's assume the following scenario: there is an openVPN server which is already configured properly it runs in bridged mode the ...
-2
votes
1answer
27 views

Connect printer to server and avoid clients to map it directly

How can I connect a printer to my server. So clients cant connect to it directly ? I tried add another etnernetcard and give it a other static ip but that just work wierd when im and my server give ...
2
votes
1answer
97 views

Network Interface binding order on Windows 8.1

When I query the local interfaces on windows 8 in the command line, I could see the results listed below: C:\> netsh interface show interface Admin State State Type ...
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0answers
43 views

WANem doesn't boot after install

I'm using WANem live cd (based on knoppix) to perform network bandwidth tests. In order to keep the current configuration, I've installed it on hard disk (using the gui installation tool provided ...
4
votes
1answer
175 views

Making TCP dump without packets loss

How to make a TCP dump where it is guaranteed that all the packets that really pass through the network are captured, and nothing is missed? Details: We have an issue with 3rd party vendor who ...
0
votes
1answer
32 views

Prevent TCP Connections from Timing out on Restarting Service

On Ubuntu 14.04, an app communicates with clients at intervals of about 1 per sec to 1 per min. However the service have to be restarted regularly and this causes all the connections to drop/timeout. ...
0
votes
0answers
11 views

how many users can one server hosts an application and a database server handle [duplicate]

i wanna start a network for a company that will consist of a server hosting one accounting application and a sql server database , and i want 200 employees to log into this server using kvm switches , ...
0
votes
0answers
35 views

Why can't some user accounts access certain remote ports?

I am trying to troubleshoot a couple issues on RHEL 6.5 that seem related. In both cases, a user on a machine (seperate machines) cannot access a service (seperate services) on a remote machine. In ...
2
votes
1answer
42 views

Can I safely replace a fiber SFP module with a copper one?

I have an expensive piece of network equipment that has an SFP+ port on it. It came installed with a 10-gigabit fiber optic transceiver installed the port. According to the device's specifications, it ...
0
votes
0answers
26 views

I am getting No route to host error

I am getting no Route to host error when doing a http call to localhost machine... I am using centos 6.4 machine. What things i need to check. java.net.NoRouteToHostException: No route to host ...
-3
votes
1answer
78 views

How can my server announce its presence to everyone in the network [closed]

The situation is as follows. I want to have an application running on a server. All of the desktops in the company has to connect to it. But I do not want the IP address of the server to be hard coded ...
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vote
0answers
46 views

HP ConnectX cards identifying as ConnectX EN

I bought a lot of four HP branded ConnectX card on Ebay. The cards are : HP InfiniBand 4X DDR ConnectX PCI-E Gen2 Dual-Port HCA 483514-B2 My problem is that two out of four cards identify themselves ...
1
vote
1answer
30 views

Win7 VM network is flaky after migrating from Hyper-V 2012 to 2012R2 and upgrading integration software

I'm in the process of upgrading our Windows 2012 Hyper-V hosts to 2012R2. As part of this process, I am migrating existing VMs from the 2012 hosts to hosts that have already been rebuilt. These are ...
5
votes
3answers
328 views

Gigabit uplink versus regular switch port

I have a 10/100/1000 24-port + 2 mini-GBIC ports switch which I have to link to other switches. Unfortunately, on the other switch all the mini-GBIC slots are taken up, so all I can do is link them ...