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

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Linux kernel behavior when dealing with colliding subnets

I'm using openconnect to connect to my office VPN. They push some pretty crappy/aggressive routing rules allocating ALL of the private IP address spaces >.< After I connect to my office VPN, my ...
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0answers
12 views

Unable to set a bridge over bonding on Debian

I have a Debian 8 Jessie machine with two interfaces (eth0 and eth1) bonded in balance-rr mode (aka 0). It works smoothly, but when I try to set up a bridge on it, it doesn't work. My ...
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0answers
21 views

How to sandbox internal IPs on the same subnet with one to one NAT [on hold]

I am curious as to what technologies are employed to accomplish this with vendors that provide this service. What kind of LAN subnet restrictions can be imposed so that 2 hosts on the same internal ...
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0answers
11 views

Xampp localhost to domain name accessed from network [on hold]

I was able to change the localhost URL of Xampp to a domain name. Example: domain.c1. However if anybody of my team wanna access Xampp the only way is through IP however I need them to access it by ...
0
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1answer
20 views

Utilizing A Secondary IP On A NIC In A Windows Cluster

RELEVANT INFORMATION I have a windows cluster with 3 nodes in it... Node1 Node2 Node3 I have 4 NICs on each node... NIC1_Host NIC2_Virtuals NIC3_Cluster_HB NIC4_Live_Migration This is the ...
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0answers
14 views

Can't connect to Windows Server 2012 Virtual Machine in Red Hat 6

I have installed a WS2012R2 virtual machine using KVM on Red Hat, It has a bridge connection, Both (Host and Guest) have public IP addresses, both have internet access, both can ping any ip address or ...
2
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0answers
17 views

Add a second bridge to a virtual machine

We have a ubuntu-12.04 host running another ubuntu-12.04 virtual machine with kvm virtualization and bridged network interface on eth4. This network allows the virtual machine access to the outside ...
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0answers
15 views

Disabling IPv6 on a specific network adapter without UI [migrated]

My problem is similar to the one described in How to disable IPv6 on a particular network interface using Server Core? - just on Windows 7. The answers seemed helpful at first, but are not fully ...
3
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2answers
107 views

What is the proper way to connect cables from a patch panel to a switch when you have more ports on the patch panel than the switch?

We're in a situation at our new building where we have 58 drops but only 48 ports on our switch. Roughly 40 of our drops will be in use, but it's a random selection ranging from 1 to 58. Typically I ...
1
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2answers
12 views

OpenVPN won't assign static IPs

I have OpenVPN setup and running correctly. The problem is I want to assign static IPs to certain users on my VPN, so they always get the exact same IP every time. My setup is for PAM authentication, ...
1
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2answers
33 views

Connect multiple times to the same wifi network [on hold]

Is it possible to connect multiple times (with different MAC addresses) to the same wifi network with just one network card? Is there already a tool to do this?
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0answers
6 views

Getting PXE-E78 error when trying to network boot

When imaging a laptop or desktop through our network, I keep getting these errors. The fix I've found is starting Windows up before I throw up our company image and doing a renew/refresh in cmd. Any ...
2
votes
3answers
37 views

Filter network traffic through 2 WANs depending on IP?

I've searched thoroughly in an attempt to find a similar question here, but aside from finding information about pfSense (which appears to only support 1 WAN?) I can't find much else... Our current ...
0
votes
1answer
16 views

Network scanning scope limited in Windows Server 2012

What I need ?: View all the computers of the network neighborhood (including all network segments, 192.168.1.x , 192.168.2.x , 192.168.3.x , etc) What is my problem ?: When I open network ...
1
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0answers
30 views

2NIC's with 2 Gateways [on hold]

I have this setup: 6 machines with 2 NICs each each machine has one NIC connected to 192.168.1.0/24 through a hub. One of the machines is the gateway (192.168.1.13) which has NAT and masquerading ...
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0answers
30 views

Can an improvised UTP cable from multiple CAT3 cables be improved? [on hold]

First of all, a disclaimer: this is a total hack job, and I'm only a networking DIY enthusiast. I live in a student housing cooperative, and the two houses it comprises have an unused phone network ...
2
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0answers
27 views

Iptables content blocking firewall

I have setup a firewall with iptables to ratelimit connections based on content. The following is an example of one of my rules that stops wordpress bruteforce attacks. `iptables -A INPUT -p tcp -m ...
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0answers
20 views

Slow connection speed in network

I'm trying to setup a NFS folder between 2 servers located at wholesaleinternet.com. The issue is that I have really slow transfer rates between my 2 servers. I started a support ticket but they ...
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1answer
37 views

Router not blocking https

We have a Netgear WNR834B wireless N-router. The problem is that its not blocking certain https sites with its content filtering and most said there is nothing much you can do that cant be bypassed ...
-1
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0answers
19 views

Router suggestions for small business capable of blocking https and/or with netflow [on hold]

I'm new in network management. I need a new business router (15 - 50 employees), preferably cisco because im much more familiar with it. Our current router is a Netgear WNR834B wireless N-router. But ...
-1
votes
0answers
7 views

Maximum throughput using Go-Back-N protocol [on hold]

what is the maximum throughput using go back n protocol if MTU is 1000bytes, RTT is 100ms and link rate is 100Mbps for window size 1pkt?
0
votes
1answer
20 views

Access OpenVPN client network from server

I have setup an OpenVPN connection between a Windows 2012 Server and an Debian Linux machine. The windows machine is the server and the linux machine is running openvpn as client. I can ping and ...
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0answers
9 views

binding issues with multiple web services

We are running a continuous integration server with the following software: Windows Server 2012 (AWS EC2 Instance) TeamCity 9.0.3 Youtrack 6.0 Collabnet Subversion Edge 4.0.14-4110.144 Octopus ...
1
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1answer
27 views

Locating bandwidth bottleneck

I am using FFMPEG to encode a video stream that is sent to a server at EC2 through ELB. I was only able to get about 2Mbps/15fps throughput to the EC2 instance. Through process of elimination, I ...
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0answers
13 views

How to connect custom network namespace to root network namespace?

I would like to connect the root network namespace to my custom network namespace in my Ubuntu box. Here is my network diagram: Basically my custom network namespace is the one who control the vm ...
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0answers
10 views

Dual wan ubuntu router [on hold]

I would like to configure a ubuntu server with two ISP and one lan with two network; say 192.168.1.1 and 192.168.2.1. 192.168.1.1 n/w should route through ISP one and 192.168.2.1 n/w should route ...
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4answers
56 views

Scanning Monitor Models in my office [on hold]

Does anyone know a method on how to run an inventory scan of all the monitors/displays in my network/domain? I need to go around the office and write down the model of each monitor, and I wanted to ...
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votes
2answers
27 views

Windows add route between two NIC card Windows 7 [on hold]

I have connected two PC_1 and PC_2 as below in windows 7 machine PC_1 (Intf1 - 1.1.1.1) --------- PC_2 (Intf1 - 1.1.1.2) PC_1 (Intf2 - 2.2.2.1) --------- PC_2 (Intf2 - 2.2.2.2) (Intf1 and Intf2 ...
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0answers
26 views

Remote Desktop Network Capacity Planning [closed]

We're looking to some sort of official guidance on RDP Network Capacity planning (preferably from Microsoft), but we're coming up empty handed. We've run RDP for many years, and have quite a bit of ...
1
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1answer
31 views

How the firewall is allowing Facebook requests to bypass itself?

I've a McAfee Firewall configured at my workplace. It actively blocks all the requests for websites like https://www.Flipkart.com https://www.Amazon.com https://www.Facebook.com I's playing ...
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votes
0answers
17 views

Connected to Internet but can't load certain page [closed]

For some reason I can't connect to a certain site...I've checked whether it's up or not by searching for the "is a website down" test and the result said the site I wanted to go to was UP. I can ...
0
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1answer
28 views

Network Config: Difference between Windows and Debian

We have a so called "LAB"-Network(VLAN). The Switch and Firewall are configured to allow access from the ip 10.150.151.1 (Windows Client in LAB) and 10.150.151.10(Debian Client in LAB) to a mail ...
1
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1answer
30 views

Select source IP on windows server 2012 with multiple IPs on 1 NIC

I have searched a lot for a solution to this case but I couldn't find any. So, any help would be appreciated. I have a windows server 2012 with 1 NIC having 2 IPs bound to it 37.188.120.8 and ...
11
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3answers
187 views

Should I use link-local addresses where a non-routable, internal IP address is required?

I have a network appliance which contains some load balancing features - in my design, these features are only for use internally within the appliance. Nothing should EVER speak to them externally ...
1
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2answers
32 views

Setting up a network for a Host Server and it's Guest OS

Is there a standard as to how one sets up networking on a Server Host that will have virtual servers within? In the past I've used virtualmin and set up the nic to have multiple alias such as eth0:1 ...
1
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0answers
18 views

Setting up a new DMZ for Web Servers

When it comes to security, VLAN ACL's, firewall DMZ policy and the like I am a Newb. So any help will be appreciated. We are trying to architect our network to place all of our web accessible ...
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votes
0answers
8 views

Can I manually define a Wireless Portable Devices firewall predefined rule? [on hold]

I want to connect my portable device to my Windows Server 2008 R2 via Wi-Fi. After enabling ports and services, I am still unable to connect, most likely because I am unable to modify the predefined ...
-5
votes
1answer
23 views

Is it possible to change wireless router BSSID? [closed]

I suspect someone is trying to hack our wireless network. I've stopped broadcasting the SSID, but assuming they've already attempted to gain access in the past they could have the BSSID stored, which ...
0
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0answers
27 views

Removing The Server [closed]

Good morning every one, im looking for a little advice if possible please. Im not new to IT but I haven't really dealt with anything too in depth on the server before. We have a server running ...
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votes
0answers
20 views

Which flags should I use for my “netstat” commands? [migrated]

I would like to use two variants of the netstat command, one for exclusively IPv4 and the other for exclusively IPv6 traffic. For both commands I would only like to list the following information. ...
0
votes
1answer
17 views

Networking Cat5 Jack [closed]

Can a cat5 wall jack transmit data both ways or is the connection only an output from the jack. I have a router hooked in to a cat5 wall jack that runs to a switch the switch is connected to two ...
-2
votes
0answers
21 views

how to bridge two network interfaces to access guest ubuntu server [closed]

I am running ubuntu as guest inside virtualbox on osx host. There are 2 network cards configured: That allows me to work localy through a fixed IP and in the same time access internet on the ...
-3
votes
1answer
30 views

Cater to multiple countries? [closed]

I run a game server off a linux machine with a single IP address masked by a proxy. The box is located in an LA datacenter, and for players in some other countries, they experience a high ping ...
1
vote
0answers
15 views

how to overcome conflict between 2 network cards - virtualbox ubuntu [migrated]

I am running ubuntu 10.4.04 LTS as guest in virtualbox on OSX Yosemite. Unfortunatelly I seem to have the network configured wrong I followed this tutorials ...
4
votes
0answers
73 views

Why would you internally use NAT? [closed]

I work at a fairly huge company as a software engineer and I would like to understand why an enterprise would internally use NAT. We have several data centers, somewhat geographically close to each ...
2
votes
1answer
59 views

A local IP address (RFC 1918) on my network that is not … local

I've noticed an IP address today on my network (192.168.15.1) which when visited actually goes to a page that has a router webconfig page (Not my router) The puzzling thing is that i tried traceroute ...
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0answers
15 views

A local IP address (RFC 1918) on my network that is not … local .. [duplicate]

I've noticed an IP address today on my network (192.168.15.1) which when visited actually goes to a page that has a router webconfig page (Not my router) The puzzling thing is that i tried traceroute ...
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votes
0answers
29 views

Identify The Source of Networking Spikes [closed]

I have been getting some crazy network spikes ranging from 300 - 1200Mbps. The machine hosts a WAMP server, which serves some low traffic websites. These spikes will effectively kill my network - for ...
3
votes
3answers
32 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 ...
-4
votes
0answers
17 views

Internet Usage Monitoring [closed]

I have a WiFi enabled ADSL Modem/Router (ASUS DSL-N10) connected to some devices (PC, Mobile, ...). It's connected to internet via Cable or WiFi through this Modem. I need to monitor traffic used by ...