For questions on connecting devices together so that they can communicate with each other, as well as on networking equipment such as routers and switches.

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How to split static ip into 2 ip's to be sent to two local ip's?

I need to split static IP into 2 ports to be sent for two systems. I have two systems having local IP address 192.169.0.1 and 192.168.0.5 and my static IP is 202.63.90.24. When I ping from outside ...
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1answer
58 views

What happens if all of the Ephemeral Ports are used in Windows?

If all of the Ephemeral Ports are used, and another socket tried to connect to a server, will the connection fail? or will the socket be assigned a port outside the range of the Ephemeral Ports?
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1answer
36 views

Is it possible to use my router to extend any USB hardware?

Using Windows 7 x64 Ultimate and an AT&T (Motorola) router 5031NV. I want to use my USB devices in another room. I am already connected via Ethernet cable to the router and was wondering whether, ...
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36 views

How to boot Windows over LAN cable?

I have a laptop and a computer. Suddenly, my computer's hard drive is broken. So, I'm using my laptop hard drive to make a new partition and install Windows on my computer. And I want to use my laptop ...
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8 views

Disable access for the service per country

Let's imagine that there is some web-service A access to which needs to be disabled in some country. How this can be achieved? The user can use some proxy server of another country in the browser ...
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1answer
22 views

Add Static ARP Entry to Verizon AC1750 Router

As documented in this question, I need to make a static ARP entry on my router. My router is a Verizon AC1750, and I am facing some difficulty along the way. From what I can gather from the router's ...
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1answer
26 views

two different ethernet lan connection internet connection issue

I have a two lan connection: Ethernet 1 is a my internet access. Eherhnet 2 is our office lan connection /no internet access/ So I have problem with internet connection while I enable 'Ethernet 2' ...
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13 views

Android Device cannot connect to apache server via “hostednetwork”

I was created server in cmd "netsh wlan" etc. On first computer I have xampp with running apache server . When I connect other computer to my "hostednetwork", I can get the "localhost" from the ...
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34 views

Windows 10 Hosted Network and Ad Hoc connection with two wireless interfaces

I have one heck of a problem that I cannot seem to overcome. I have two wireless network adapters that I am trying to use for a slightly complicated network topology. There are no routers, switches ...
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1answer
28 views

Wake on LAN Port Forwarding not Working

I am trying to configure the server I run from my home with Wake on LAN so that it is not necessary for me to keep it running when I do not need it. I have been able to get it to work on when the ...
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12 views

Snort packet drop rate measuring

I am running 12 instances of Snort (1 instance per core) with PF_RING enabled in inline mode on Ubuntu 12.04 x64. How can I measure total packet drop rate? ifconfig shows 0 dropped packets which is ...
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23 views

Script on router with DD-WRT can't be executed because it isn't found

I have a netgear nighhawk r7000 router with the DD-WRT "Kong Mod" release: 04-19-2016. I was trying to block ads directly on the router with pixelserv following this tutorial http://www.howtogeek.com/...
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1answer
55 views

Remote Desktop will not connect on port 3388

I use Remote Desktop to visit the desktops of other computers on my network. I have been also using Remote Desktop to access one of my computers from outside the network by using DynDns, port ...
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1answer
32 views

Incoming connections from public to private IP address

Today i have checked the auth.log of my raspberry (private IP address in my home network behind a wrt54gl). Surprisingly i saw a lot of "Failed password for root from" lines. The SRC IP can be found ...
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1answer
11 views

Setting custom route to device in local network

I have a little problem with my local network. When laptop(marked by red arrow) tries to connect to my NAS(Zyxel NSA310) it sends file not by shortest possible route (via switch only), but instead its ...
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1answer
43 views

Unable to SSH over WiFi, working when connected via LAN

I am trying to SSH into my Raspberry Pi 3 via my Win10 PC both connected to my router via WiFi. What I did was that I assigned a static IP from my router's config page to both my PC and my Raspberry ...
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1answer
38 views

How to assign a static IP to a Computer in Active Directory

I'd like to know how you can assign a static IP address to a computer using Active Directory. I know it is possible with a user using the Dial-in tab, but doing it on a computer has no effect (unless ...
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6 views

Can I configure the vaccine update server?

After studying about PMS server, I thought that I can configure avira vaccine update server like PMS server. I think that of course it's possible. What about your opinion? Is it really possible? If ...
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1answer
21 views

DHCP messages when connecting to home WI-Fi

I inspected DHCP packets with wireshark. Expected result was to see 4 packets, namely DHCP discover, DHCP offer, DHCP request and DHCP ACK. I only see 3 as indicated by the picture. DHCP discover and ...
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27 views

Port forwarding port 21 on a TP-Link

I am trying to forward port 21 to externally access the FTP server. I followed all the steps correctly to port forward a port but port checker tools still show that the port is blocked. Port ...
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0answers
12 views

vagrant VirtualBox - cannot connect HTTP from host while connected to a VPN (Watchguard)

I am revising my question completely. I cannot connect to my "public network" Virtualbox virtual machine via HTTP while I am connected to a Watchguard VPN. As soon as I turned off the VPN, I was able ...
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10 views

Set an OpenWRT as a Dumb AP while running 6in4 tunnel?

The computer connect to OpenWRT router through LAN port, the router connect to another router using WAN port. So it's like: Computer -> OpenWRT -> External Router(Still in private address setup) ...
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21 views

ERR_CONNECTION_TIMED_OUT after 4 devices using same web site

I have a user where when they have more than one computer/device make http requests to a site; it gets error ERR_CONNECTION_TIMED_OUT. The server is not blocking or rate limiting and under very little ...
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23 views

Ethernet adapter/router stopped generating/assigning global IPv6

My ISP provides dynamic IPv6 addresses which i use in conjunction with a DNS update script and a domain to access my computers from anywhere, but for some reason my ethernet network adapter or router ...
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0answers
21 views

How can we remote desktop and remotely access shares, when our router is behind another router, in an office environment?

We've just moved office into a shared building with a communal internet connection and I'm unsure how we would go about accessing SMB shares, remote desk topping, or setting up a VPN in this ...
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1answer
77 views

How can I logically separate interfaces on a host?

Problem Introduction I have a network topology which looks like the below diagram. All hosts are running different Linux distributions, and all my configuration should (hopefully) be done on Host A, ...
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28 views

Unable to install Cisco Any Connect V3 on Windows 7

I tried to install Cisco Any Connect V3 to connect to GM VPN but no luck. The first time, I installed this successfully. Then, I uninstalled it. Today, I re-installed it and the error occurred: "...
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17 views

OpenWrt Configuring inter zone routing

In my LAN I've got two routers. Router A is a really shitty and dumb device that I have to use because of my ISP. Router B is an Archer C7 from TP-Link running OpenWrt. Currently router A has the ip ...
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1answer
32 views

How can I find which device is using all my network bandwidth? [duplicate]

Can someone please help me eliminate a problem within my house? There is a device in my house which continues to use all of my router's bandwidth. How can I find which device it is which is using all ...
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44 views

How to detect my network's bottleneck?

I have the network shown below : Both pc1 and pc2 run win10 OS. When i share files between the 2 pc's using windows folder sharing option, the speed tops at 10MB/second. Is that normal or is there ...
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17 views

Reroute all outgoing connections to a second gateway

I have an Ubuntu Server 16.04LTS with an apache2 server. My network consists on two gateways bridged to each other (both connected to internet): 192.168.0.254/24 and 192.168.1.1/24. The server has ...
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18 views

Linux kernel ignoring ICMP redirect requests, but only sometimes

With tcpdump I can verify that ICMP redirect requests are honoured when using ping, but not when using ssh. Here is the setup: myhost connects to otherhost. otherhost has tcpdump running. It has a ...
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1answer
26 views

Blocking Flash Player from router to prevent user from wasting bandwith

There is one user on the network which is always watching videos with Flash Player and eating bandwith and I cannot get the user to disable Flash Player but instead can I block it using my router? I ...
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2answers
40 views

How to add a second local loop_back address?

I already have a loopback address at 127.0.0.1, which corresponds to a host in the local loopback network 127.0.0.0. How could I create a second local loopback host with an address of 127.0.0.2 ?? ...
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0answers
29 views

reroute my traffic to another adapter

My Internet access comes from my ethernet and I want to redirect it to a virtual adapter which is connected to a vpn server. I looked for answers and I'm now aware it has to do with the route rule but ...
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1answer
27 views

Why connecting the WAN port and a LAN port of a router?

In this post (in Chinese), there's a configuration that I don't understand: they connect the WAN port and a LAN port of the same router by a cable, and connect the cable which furnishes the Internet ...
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1answer
95 views

Exact meaning of ICMP protocol 1 port xxx unreachable in a ping exchange

A tcpdump of a ping session shows the following two lines: IP gateway.comp.com > somehost.comp.com: ICMP redirect 10.8.0.10 to host othergateway.comp.com, length 68 IP gateway.comp.com > ...
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2answers
46 views

What type of routers do large airports/conference-halls/hotels use?

I run a small coffee shop where we provide free wifi. The home routers I have supplying my shop's terminals, employees, and customers with internet access seem to be getting overloaded during peak ...
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1answer
35 views

How to use 2 Ethernet ports on the same computer to connect 2 different routers

I have a desktop with 2 Gigabit LAN ports, I need to connect to the main router in the house so I can run my VPN and access my data offsite. However, I also need to be able to use the router in my ...
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26 views

How to find the cause of my Packet Loss?

I am using Internet from my University. All rooms and offices are connected with Ethernet cable through many switches. Many times I have packet loss, I think one switch or modem is problematic. How to ...
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0answers
35 views

Yahoo won't load, but pings okay

halfway thru the day, Yahoo.com stopped loading. it comes to ERR_CONNECTION_ABORTED on Chrome. i also tried Firefox and IE11, with no better results. it works on my cell network, but not on any ...
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1answer
14 views

IPTables — Forwarding to Attached Client but keep source IP

Here's my scenario: I have a VPS that has two IP addresses and is running OpenVPN (IP Address of OpenVPN server: 10.1.2.1). I want to forward all received traffic on ONE address to VPN-client (10.1....
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1answer
46 views

How does a router monitor traffic between two devices on a switch [on hold]

I recently set up a small business network, and am constantly learning more about how networking hardware works. It is my understanding that a Layer 2 device (Dell 48 port managed switch in this case)...
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0answers
13 views

Lenovo Z70 Does not Wake On LAN

I am trying to configure my Lenovo Z70 laptop to work with Wake On LAN, but I have been unable to do so even though I have determined that the magic packets are in fact reaching my machine by making ...
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0answers
17 views

Server 2012, is it possible to have a VPN connection and an internet connection send/recieve traffic simultaneously?

We're currently in the process of developing a new website and its getting to the point where we are seriously considering hosting solutions. The options are either host ourselves - which involves ...
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25 views

VMware failing to start network interfaces (vagrant)

On some routers, vagrant up fails with the following error (or similar, the vmnet* number might change): Vagrant failed to start the VMware network interfaces! The output of the failed command, if ...
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31 views

Set DSCP based on application or destination IP (Windows XP)

I have a couple of computers running on XP (can't upgrade the O.S. without updgrading the hardware and currently we can't afford it) that run an specific application. The application uses a database ...
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0answers
16 views

Ethernet adapter does not work for a period of time

I have a rather strange problem, all of a sudden, without any changes - my ethernet adapter stopped working (from one start up to the next). However, after about 10 minutes it starts working again (...
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1answer
24 views

Problems connecting to my Mac via SSH

I have Mac with remote access enabled. I can easily connect to it via SSH within local network. I have configured 22 port forwarding on my router. But I can't connect to my Mac via SSH by using router'...
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0answers
5 views

Can an E900 wireless router in bridge mode, having IP on a different net than the bridged network, cause problems due to this config?

I have an ISP-provided router with one available wired port, and wireless. Because the router is placed in a bad spot in my apartment, I have connected a Cisco E900 wireless router with a cable. This ...