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

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31 views

How do I make a computer lab? [closed]

I realize the absurdity of the question. A local art center wants to offer classes that use computers. They happen to have near 20 IMacs hanging around that the high-school has given them. The room ...
1
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0answers
21 views

What are the network prerequisites for Windows Azure Pack

I have followed many articles to install and config windows azure pack distributed, But every time I finish configuring everything, the azure pack is not working and give me different errors, seams to ...
1
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2answers
75 views

Client computer(Windows 8.1 Pro) unable to connect to a domain(Windows Server 2012)

I am unable to connect a client pc to a domain controller which is a Windows Server 2012 Datacenter. I have tried connecting it : Through the system menu in Control Panel Putting all the ...
0
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0answers
15 views

Route 2 external IP ranges using pfSense

I have pfSense running on some hardware routing my /27 block of IP addresses assigned by my ISP. I asked for and got another /26 block that I want to send all of the block to a single server (it will ...
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2answers
33 views

Is there a way to block ALL inbound/outbound traffic going outside of a LAN with iptables?

As the title says, I'm just looking for a way to disallow any traffic on ANY port unless it's going to a local IP address (192.168.1.*).
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0answers
10 views

HP ProCurve 4208vl - Show PSU information?

I'm working with a few older HP ProCurve 4200-series chassis switches (4204vl and 4208vl). Some of these units have single power supplies, while others have dual power supplies. I'm trying to ...
0
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1answer
18 views

Dell Kace1000 reset password issues

Following these instructions, and using the credentials netdiag/netdiag it returns the error: "Login Incorrect". At the login prompt, type netdiag. The password is netdiag. Note: On older ...
0
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0answers
50 views

Multiple networks per interface in OpenStack in Hetzner

I'm trying to run a small OpenStack setup over a few servers hosted in hetzner.de, I'm currently deploying a basic setup to two servers. All servers are running Ubuntu, they are connected to each ...
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30 views

Get real client IP when port forwarding in Mikrotik

A web server is connected through mikrotik, by using port forwarding (dst-nat requests in port 80 to server's local ip port 80 ) By doing this web server is working well but when trying to get IP ...
0
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1answer
32 views

db servers direct ethernet connection

We are planning to setup 2 mysql servers in master-master replication Is it possible to use direct Ethernet connection over gigabit ethernet port on the 2 servers? Is there a way to bind mysql ...
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0answers
11 views

Citrix Receiver - extremely slow remote desktop connection specific to a Windows 7 client [migrated]

I'm a software developer and I connect remotely to my office desktop using Citrix Receiver. On a new desktop at home running Windows 7 I notice consistent slowness when trying to use my Citrix remote ...
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2answers
40 views

What's the difference between .0/32 and .1/24 in CIDR?

We're specifying CIDR addresses in AWS rules, and I came across something I don't understand. /32 means one single address. So 10.0.0.0/32 means only the single address 10.0.0.0. But an address ...
3
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1answer
49 views

SSH hangs for several minutes at a time

I can SSH into a server and run commands just fine, but usually within a minute or so the session will appear to hang (become unresponsive). I can type commands but they're not even echoed on the ...
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0answers
44 views

Site to Site VPN tunnel to private network

I'm looking for a little help with a network setup. I have a router which I will be using for routing network, this will be 10.0.100.1 and it will be connected to the internet with a public static ...
0
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1answer
35 views

Network account problems with mac server OSX 10.6 Snow Leopard

Okay the situation is this. Yesterday my company changed our dns server, because our former one, was too unstable to work with. anyway today i went to one of our mac server, because it needed to be ...
1
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1answer
86 views

Why is remote desktop still not working?

I regularly use remote desktop to connect to PC's at work instead of going an physically sitting on the machine. We have 2 new computers, 1. Windows 7 2. Windows 8.1 ... I'm trying to connect to them ...
0
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0answers
15 views

Multihomed FreeBSD10.1 on AWS

I have an AWS t2.micro instance running with two network interfaces. I have set it up to run nginx on one interface and everything else on another. rc.conf # EC2 uses DHCP; the network interface ...
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0answers
74 views

Setting BIG-IP LTM Virtual Server for two SQL Servers nodes

I've created BIG-IP Virtual Edition instance in Amazon EC2 using this tutorial. I've followed this tutorial to configure BIG-IP System as an MS SQL Database Proxy. There were couple things that I ...
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1answer
47 views

How would traffic be routed with this routing table

I ran across two entries in a linux routing table that both have the same destination, but have different gateways. How would this traffic be routed? I've been searching around online for additional ...
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0answers
11 views

lose connection in one way on local network without firewall windows server 2008 r2

we have 2 computers in our local network a few day ago we encounter an wired problem sometime network connectivity from computer one to computer two lose and we can't ping computer two from computer ...
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0answers
38 views

Why does Windows XP run applications from network shares so much more quickly than Windows 7?

I have multiple clients that run all sorts of (mostly badly-designed) software off network shares. The design of the software is such that it's intended to do so - the server runs the database locally ...
0
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1answer
20 views

Howto forward traffic between multiple OpenVPNs

I have an OpenVPN server which hosts two VPN networks, one is bridged and the other one is routed. See the following draft: The VPNs are working quite well while they are used in isolation. But if ...
0
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0answers
27 views

Ip6tables firewall make server unreachable on reboot

I am trying to set up a very basic firewall on my server with iptables and ip6tables. My rules get loaded on restart with systemD. The OS is ArchLinux. When I just setup iptables everything works. ...
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1answer
38 views

How many static IP's do I need for VPN? [closed]

I am setting up a VPN system for my office. Is it correct that if I don't have a dedicated VPN server, I will need to purchase one static IP per computer I wish to connect to? Or can I just give the ...
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0answers
12 views

Rewriting the IP packet on tunnel interface in MAC OS [migrated]

I am trying to rewrite the destination address (to 127.0.0.1) of an IP packet received from a tun interface on MAC Yosemite. Will the kernel route the packet again to loopback interface or will it ...
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0answers
7 views

Windows printing Port monitors provide insufficient status information

When printing to a network attached (TCP/IP) printer, the Windows port monitor close the session to the printer immediately after sending the job. It only received subsequent confirmation of printer ...
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5 views

realtek PCIe GBE network adapter slow on windows vista [migrated]

I'm getting 69mbps down and 500 mbps up on a 1gbps link using onboard realtek PCIe network adapter and Windows Vista 64-bit. I suspect it's a driver problem, because: snooping the connection with ...
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0answers
37 views

TCP connections drop off after initial build up

A bizarre problem on a production setup. Scenario 1) A server listens on a particular port. 2) There are potentially thousands of TCP connection requests. 3) About 200-300 TCP connections reach ...
0
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1answer
30 views

Managing two switches and one Router [closed]

I have the following network : One Router : CISCO 860 (In : ADSL, Out : Yellow Ethernet Cable) Two Cable Panels Rack One : PANEL 24 ports (22) - DT24F Rack Two : PANEL 24 ports (22) - DT24F ...
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2answers
58 views

How are packets routed from my VirtualBox Virtual Machine to my local host OS environment? [closed]

I have a basic question I do not understand regarding the IP given to a Virtual Machine running on my laptop. I use boot2docker (basically, it creates a VirtualBox Virtual Machine to have access to ...
0
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0answers
29 views

Windows Server 2012R2 Hyper-V Additional Public IP Subnet

I am using Ubiquti Hosting for a bare metal server. The server has a base IP address space of: Main IP: 24.79.37.82 Default Gateway: 24.79.37.81 Subnet Mask: 255.255.255.248 Usable Range: ...
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0answers
21 views

Flat ISP network to MPLS dumb Q

I have a fairly flat ISP network that I am upgrading to use MPLS (dont ask why, that decision is above my position) but clients/CPE are authenticated using PPPoE. Each POP uses a router configured as ...
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1answer
28 views

Getting Rid of the Old/Worthless Data Center Equipment [closed]

I have old and completely worthless routers/modules that are rotting in my office closet from various data center upgrades. I doubt anyone would want to buy this stuff (feel free to contact me ...
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0answers
17 views

IPtraf doesn't work with venet devices

I've got a VPS with Debian 7 Wheezy 64 bit. I installed the tool iptraf to monitor the network usage, but it seems that it doesn't work whit the device type "venet". So i lunched the command with the ...
1
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1answer
11 views

Viewing NxN network traffic in a distributed system

I have a Hadoop cluster set up, and I would like to view the network usage between all nodes in this cluster, i.e. if I have N nodes, I want to see NxN network connections so that I can view all ...
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0answers
16 views

Which kernel parameters should be adjusted to fix RX overruns?

I have a Centos 6 server that handles a lot of traffic. I see RX overruns increasing all the time: RX packets:11191345002 errors:0 dropped:0 overruns:35592596 frame:0 TX packets:15262461573 errors:0 ...
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0answers
25 views

WAMP error “took too long to respond” [duplicate]

I am hosting a WAMP server for a coworker (yes, I understand the security risks) yesterday we could connect just fine, but now we get a "sever took too long to respond" message. If I try to load the ...
0
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1answer
40 views

Multiple DHCP uplinks - How to ignore DNS and default route on all but one?

A multi-homed box needs more than one uplink to be configured for DHCP. It needs to ignore default-route and DNS for all but one DHCP uplink. There is a similar question here [ Debian interfaces file ...
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0answers
60 views

Squid intercept proxy stuck with forwarding loop

I'm trying to set up a debugging proxy using Squid, mainly to test our own client communications library for various proxy types (one possibility with our client, is to connect to an external ...
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0answers
19 views

Broadcast ARP weirdness

we a running a router on a custom Linux box. Kernel is 3.14.14. What happens is that when you arping the router in broadcast only mode is the router has a verey slow response time: # arping -b -c ...
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0answers
21 views

CORBA lookup fails with NameNotFoundException

The CORBA lookup works fine from localhost: thufir@doge:~$ thufir@doge:~$ appclient -client NetBeansProjects/corba/GreeterCorbaClient/dist/GreeterCorbaClient.jar {org.omg.CORBA.ORBInitialPort=3700, ...
2
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2answers
237 views

How to monitor quality of unreliable link over time?

We have ISP that provides us with a shoddy service. It usually works, but there are times when it works really bad, drops connections and gets awfully slow. Sadly, our contract doesn't have SLA clause ...
2
votes
1answer
74 views

Send network signal over a very long distance of copper

I have an issue were I need to interconnect 2 switches together. We've estimated that they are 1400 meters away (cabling distance). I wanted to use a media converter to extend the signal on OS1 ...
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0answers
35 views

Can not ping host on different network from router

I am unable to ping an address (205.134.241.75) from any machine on my network. I also cannot ping from the Router/gateway of this network. I can ping this location from any other network i have ...
1
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0answers
84 views

Access to equally defined VM in different VLANs

I have a working libvirt cluster and in order to perform some paralellization I have duplicated it. At the moment my scenario looks like this: two clusters whose VM definitions are exactly the same, ...
1
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1answer
40 views

Port 1434 - Company Website hosting blocking us

We have a small network setup on a Windows Domain. We also have a company website that has the same domain name - but is actually not in any way on the domain - it's hosted elsewhere on a cheapo ...
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0answers
21 views

Stop Outbound SYN Scan

Hello I run a VPN company, and recently my host has been sending me these complaints that are likely coming from a user. I am not sure how to identify the user, if I could just do that I wouldn't ...
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0answers
15 views

Troubles with subnets and redirections

What I want to create is 2 subnets that communicate each other through a gateway. Here is my gateway: wlan0 Link encap:Ethernet IndirizzoHW c4:46:19:69:b7:a5 indirizzo ...
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2answers
41 views

Can I configure a server to use a user port(>1023) for NTP?

Can a linux server be configured to use a high source port(above 1023) for NTP synchronization with a Stratum 1/2 server? Are there any disadvantages to doing this?
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14 views

“Password Expired” when attempting to access Win7 machines on local network with our local admin account

Looks like all of our Win 7 and Win 8 machines were somehow set to expire the admin account that we created locally a couple months back. Now we're trying to make sure we either have to go to ...