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

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windows server 2012 disable automatic lockscreen/logout after end session

I'd like to disable disable automatic lockscreen/logout after end session. I need this because autoit scripts being automaticly stopped as I close remote desktop.
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2answers
22 views

How do I stop a simple DDOS attack?

There is a hacker who is mad at us, and has started a DDOS attack against us. I think he is a script-kiddie, using tools like DarkComet; the attack is probably simple. I host a server on my PC. The ...
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0answers
20 views

AWS + KeepAliveD: Not able to Ping or Telnet Virtual IP from remote hosts

I am setting up KeepaliveD with 2 nodes on AWS by following this article. My Virtual IP gets moved from one node to another in case of fail-over. However, the VIP just cannot be accessed from a remote ...
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1answer
20 views

KVM fastest network between 2 guests

I wonder if there is any way to speed up the network communication between 2 KVM guests on the same physical machine. Would that help at all if I would configure a separate bridge network for just ...
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1answer
39 views

Hostname is not mapped to the ip address correctly [closed]

I recently installed Wordpress on my home server running Arch Linux. Everything else works smoothly except that when try to access the server externally, the style sheet is not rendered. I have read ...
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0answers
16 views

Can't access host-only network when on two interfaces [migrated]

I'm trying to use a host-only connection with my VirtualBox VM. My VM is set up and can ping the host (192.168.56.1) on vboxnet0. If I disconnect the host from my local network (internet access) I ...
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votes
2answers
85 views

IP on different subnet mask [closed]

I'm still learning the ropes of Windows Server (specifically 2012R2). My assigned task is to setup a static local IP address, I managed to get it set to 192.168.1.96 (with subnet mask 255.255.255.0) ...
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1answer
30 views

How to extend the VLAN defined in the Ethernet network into the WiFi network? [closed]

How to extend the VLAN that you have defined in the Ethernet network into the WiFi network?
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0answers
9 views

ip command vs qdisc discrepancy in dropped packets

I am simulating packet loss via mininet network on Ubuntu 14.04. Why are there no dropped packets showing up in ip command? For switch s3, I have Qdisc (sudo tc -s qdisc show): qdisc htb 5: dev ...
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0answers
31 views

Proxying request from nginx docker container to tomcat docker container (all inside Vagrant VM)

Running a Vagrant (virtualbox) VM with two docker containers inside, nginx and tomcat. Want to host static files in nginx container and proxy web requests to the tomcat container. I've read up on ...
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0answers
31 views

Solaris 5.10 telnet connection closed by foreign host

I try to connect to a Solaris 5.10 server using telnet, but I only see: $ telnet xxx.xxx.xxx.xxx Trying xxx.xxx.xxx.xxx... Connected to xxx.xxx.xxx.xxx. Escape character is '^]'. Connection closed by ...
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0answers
20 views

Dnsmasq , redirect all but google.com

My router uses dnsmasq. In my dnsmasq.conf, I write: address=/#/127.0.0.1 in order to resolv any domain to my local server. It works. Now I'd like to make possible to join www.google.com. Any other ...
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0answers
31 views

changing IP for specific host DNS entry in BIND for dedicated server [duplicate]

changing IP for specific host DNS example (test.com) entry in BIND to point to different IP let say my 2nd dedicated server IP. I have dedicated server hosting on data centre running BIND9, connected ...
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1answer
38 views

Captive portal detection by Apple Oses, iOS 'splash CNA popup' does not show?

I built a captive portal (Linux Debian router), providing a WifiHotspot based on hostapd and iptables rules ( like this: ...
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votes
1answer
13 views

Connection from application on network share fails

EDIT: I tested some more...If I copy nslookup from the Windows directory to my mapped network drive, it cant' resolve hostnames: H:\nslookup dbserver (null) UnKnown Address: 192.168.0.195 If I ...
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0answers
12 views

response ping is expired in transit [duplicate]

I've configured my debian's network on virtual box: auto lo iface lo inet loopback auto eth0 allow-hotplug eth0 iface eth0 inet static address 192.168.56.15 netmask 255.255.255.0 gateway ...
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1answer
26 views

Import a vm image to a new host machine with virt-manager

I need to recover a guest machine with Windows 2003 on a new host server on Centos 7 with virt-manager. I've shut down a guest machine and simply copied its .img file from /var/lib/libvirt/images. ...
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1answer
51 views

Two network adapters for a machine to double the transfer speed [closed]

i am new to this. In my scenario, i have a desktop pc running windows 7 and planning to set up a local web server using xampp for big file transfer in the lab. The problem is that,there are 80 ...
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0answers
30 views

BGP routing table [closed]

I'm currently trying to understand how BGP works. Unfortunately, I'm running on an OSX system and tried to install some BGP simulation, i.e. Core, Imunes, psimulator2, c-bgp, for hours without ...
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1answer
37 views

Azure Load Balancer, Internal Network Limits

The Issue: Cannot create sufficient socket connections to VMs, going from Azure VM -> Azure VM. There have been a few questions about Azure Load Balancer, perhaps because there is currently little ...
1
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1answer
76 views

Millions of TCP FIN-ACK retransmissions blocking traffic on my desktop machine

In a few minutes I have received about 7 millions(!) FIN-ACK packets from IP address that belongs to Google 74.125.133.188 what totally blocked network traffic on my desktop(!) machine. Other ...
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1answer
34 views

Intermittent server LAN drop

I've been trying to hunt down a network issue we've been having for a while. We have two Dell T310 servers running Windows Server 2008 R2 on them. Quite a few users have complained that they get ...
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1answer
43 views

How to mount network drive as local disk?

I have some resource, which I can open by address \\dir\bin. I want to mount this resource on disk Z. In other words, I want to have path like Z:\file1.txt and get file \\dir\bin\file1.txt. I tried ...
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0answers
20 views

Creation of a guest Wireless network 802.1X - easy to configure out of the box on clients (android, ios, computers,..)

I would like to create a Guest wireless network with 802.1X (WPA enteprise). On the client side, it must be easy to configure, so the users can enter a login and password during the authentication ...
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2answers
28 views

Windows Server 2012 two out going connections

I have a server with several Ethernet ports. I have the first 3 bridged together for the local network. The 4th is plugged into the modem which is giving it a public IPv4 address. How do I tell the ...
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2answers
52 views

setting up linux router

I have setup three Ubuntu VMs in vmware. These are connected as: Now I want to use UBUNTU2 as router, so that when I run these commands in UBUNTU1, I get response from UBUNTU3, commands: ping ...
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0answers
11 views

Cisco 1941 HWIC Prohibitions

I recently upgraded our Cisco 1941/K9 router (see figure 4 here) to include an additional HWIC (HWIC-2FE) without issue. During my research for an applicable module to provision the necessary ports I ...
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1answer
44 views

HA-Proxy 301 re-direct: https to https://www

I am trying to have HA-Proxy 301 redirect an https domain. I need: https://example.com to redirect to https://www.example.com This is what I was trying to get it to work: # corp - example.com ...
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1answer
36 views

What does a switch do with invalid VLAN tagged traffic?

Say you're plugged into a switch that allows TAGGED 2; and treats UNTAGGED 5. However, say you tag your traffic 10... which isn't "valid" on that port. What happens to any traffic you send?
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16 views

No package transfer from host to guest on KVM

I want to assign external static IPs to my KVM guests. I do not prefer a NAT solution. What should be the configuration of network and routing tables? I manually assing a static IP to guest. I can ...
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0answers
48 views

Cisco 3120 blade switch does not boot after power outage

We use a Cisco WS-CBS3120G-S in a HP BladeCenter. After a power outage, the switch will not boot anymore. The switch dose not output anything on serial console. The LEDs SYST, STCK and active (under ...
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3 views

Virtualbox static ip setup windows guest [migrated]

I installed Virtualbox on an Ubuntu host and created a windows guest. I set the network adapter to bridged and entered the ip, subnet and gateway along with google dns servers into the guest ipv4 ...
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2answers
88 views

How to run two different IP ranges in one VLAN

Someone please help out of the mentioned scenario... I have a campus wide network which has COMPUTER LABS for Students, OFFICES, and Wi-Fi users. Out of all these I have 07 computer labs where I have ...
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1answer
79 views

Is there any harm to use the broadcast IP for a host?

I'm managing a /27 network. Obviously I cannot assign the network address to any host, but I found assigning the broadcast IP to a host seems to be OK. The host with the broadcast IP of the network as ...
0
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1answer
29 views

Network route quality - test if server has good routes to users

I noticed between two servers I get about 500Mbps of throughput and between two others I get about 25Mbps. While it may not be related to my issue (which I'm not interested in solving for the ...
1
vote
1answer
48 views

Debian Linux default interface?

I have a Debian machine with an SNMP pooler running, but I am running into an issue with getting the pooler to use a specific interface. The Debian machine has 3 interfaces allow-hotplug eth0 iface ...
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1answer
23 views

Sending file with netcat over UDP: Unusual Wireshark output

For the purposes of demonstrating differences between TCP and UDP, I'm piping the contents of a file across a network connection, and recording the interaction with Wireshark. Everything looks normal ...
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0answers
11 views

Create a top Bond (ALB) on 2 lower Bond (LACP)

Is it possible to create a BOND over a BOND? or this will cause some networking issue? Why do I need this setup? I have 2 switch that support LACP but not distributed LACP! My Server has 4 ethernet ...
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7 views

Not able to authenticate via internal DNS

When I installed Sharepoint on my server, I gave the internal DNS to access the Sharepoint internally (by DNS Manager), but when I am trying access the Sharepoint by DNS sharepoint.abc.com then it is ...
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2answers
17 views

Eigrp topology table

This is a cisco networking question does Eigrp topology table contains the entire network topology on it's database! I am a bit confused in this, can someone let me know! thank you
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1answer
28 views

NetBios issues with multiple adapters, may not be turning on

I'm working in a Windows 2008 server. I'm getting conflicting messages as to weather or not netbios is enabled. The problem is that my AD users can't "discover" the server. I think that netbios is to ...
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votes
1answer
18 views

Adding networking interface to qemu-***-static [on hold]

I'm chrooting ARMv7 filesystem using qemu-arm-static on my x86_64 PC. and it works fine but I would like to add networking interface to this mode. is this possible?
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1answer
40 views

Servers in different DC's - performance impact

Today Linode eat my nerves completely by shutting down main DB server for 25 minutes due to their internal network problems. Right today I was going to set up another one server at linode to set up ...
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0answers
29 views

Captive portal OAuth

Im building a large network of AP with captive portal deployments, each AP has its own internet connection, managed by routers I don't have access to. I can manage the APs through a cloud ...
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0answers
100 views

What causes the Linux neighbour table confirmation counter to be reset

Given three linux hosts on the same broadcast domain, the sender constantly pings an IP bound to receiver1. When moving the IP address from receiver1 to receiver2 it takes a quite long time for the ...
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17 views

Make a basic auth client authenticate on a digest auth proxy server

My company has a legacy application which needs to connect to the Internet. Unfortunately, our network staff has changed the proxy settings in order to accept digest authentication only, which this ...
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27 views

CIFS Input/Output error when executing set attributes

I have a CIFS share. It works perfectly with Windows, but if I want to create a file on the share, using Linux, it returns an I/O error stating that it could not set the attributes: $ touch a.txt ...
2
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1answer
42 views

Simulate 2 clusters in the same network

I have 4 pc´s and another pc, which will act as a proxy, all being in the same network: 172.16.96.0/20 . I can ping between each other. But, I want to separate them into two groups. That is: pc1 is ...
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1answer
60 views

Mapped Network Drive Dropping

We have a Head Office with a file server containing shared folders. Group Policy is used to map all of the network drives on every domain joined PC. One of our remote sites, connects back to Head ...
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1answer
20 views

Bind9 DNS Setup

I have my network set up like this: My question: what is the best approach for setting DNS on this network so that all host (H1, H2 and H3) can resolve each other? It is enough to just have NS1 as ...