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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experiment with ARP (NETWORK lab)

I wanted to know if we ping the loopback interface by typing "ping localhost" at console prompt,could any ICMP packet be obeserved on the output of my TCPDUMP? and why?
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6 views

How can i connect to a VPN then to a sock5 proxy? Proxy refused

I need my connection to be like this My PC --- VPN --- Sock5 --- Web. But everytime I'm connected to the vpn and then try to connect to the proxy. It reads somethin like "proxy server refused". I ...
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2answers
15 views

home and vmware lab on same subnet (AD)

I have a question about network topology. Namely, I wanted to set up a cluster vmware for testing SQL Server: fail over, always-on etc ... But I do not know how to reconcile this with your home ...
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7 views

How to stop my Wifi CPE from going into bridge mode?

My current home network config is as below. ISP...(wireless)...Outdoor CPE---(ethernet cable)---Asus wifi router...(wireless)...laptop & phones In routine scenario: Asus wifi router is set to ...
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1answer
11 views

Using VPN on host then Proxy on VMware guest?

I have been working on the for 9 hours and I cannot find a solution. I want to run my VPN on my host computer and then use a proxy on the vmware machine. If I run the vpn through my host computer I ...
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6 views

per-vif tx power setting?

I am trying to change the tx power setting for my TP-Link TL-WN821N adapter for learning purposes. I tried this: iw reg set BO iwconfig wlan0 txpower 30 and this ifconfig wlan0 down ...
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13 views

Playing video from PC to TV through HDMI looks noticeably worse compared to playing directly from USB

I have a non-smart LED TV. And I have a uncompressed 1920x1080/60fps video which I copied to flash drive, plug it into the TV and play it, the result is really good. However when I tried using my TV ...
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1answer
11 views

Using IPv6 link-local addresses to ping between VMs in internal VirtualBox network

I'd like to test this network configuration in fully virtualized enviroment, while I don't have access to physical lab. I am using 2 VM Guest machines (Guest OS is Archlinux), each configured with ...
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6 views

making copy of one server to another

I have three identical hardware machine. I want to install and configure centos server on all machine. I need to have exactly same configuration. After some research,I know there is a way of making ...
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11 views

Refit old CISCO 5505 ASA hardware with Linux/FreeBSD software - (for the experience)

I was given an old Cisco 5505 ASA (EOL). The device hardware meets the specs for what could work in a small network, and I would like to replace the Cisco IOS with a unix open source option, like ...
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1answer
31 views

Configure Windows Firewall to block ALL applications system-wide, except for a select few?

I'd like to make it so Windows disregards internet access for every system and user application, and let me add exceptions as I see fit, but I'm having problems... Going to "Windows Firewall with ...
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16 views

How can I fix my internet connection when “ my computer appears to be correctly configured”

I am new to this website, I don't know if my question is an off topic question, or even if this is the suitable place to ask. Please tell me if I am in the wrong place. Since some days I ma facing ...
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8 views

Edimax router not responding after about 2h after restart

I've recently bought two Edimax BR-6478AC V2 WLAN VPN Routers. The setup is: Modem: 192.168.100.1 Edimax 1: 192.168.100.2, running in Router mode, DHCP Edimax 2: 192.168.100.3, running in ...
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6 views

Can't connect to wifi in both Windows and Ubuntu (but USB tethering works)

I just bought an ASUS K31AD desktop PC. I have both Windows 10 and Ubuntu 15. I can connect with my phone's USB tethering but not with its Portable Wi-Fi. What can be the cause of this? I used to be ...
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18 views

PPTP VPN on Android for Selected Apps

I've created a PPTP VPN on our firms Mikrotik router. And I've successfully connected the android devices via their native VPN app in settings. However that means that all of the traffic will be sent ...
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2answers
26 views

Host connected to Cisco 3825 router cannot connect to the internet, nor can the router

I currently have a Cisco 3825 router that I have (attempted) to configure. The router has two interfaces, GigabitEthernet0/0 and GigabitEthernet0/1. I would like Gi0/1 to act as my "WAN" interface ...
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1answer
21 views

Dynamic Bandwidth Allocation

My days in networking are too far behind me to remember, so I thought I'd come here! I'm setting up a network of 10 devices, and I'd like to dynamically limit the bandwidth available to each one as ...
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1answer
17 views

Changing DNS server globally in Windows

It is possible to change DNS server for a particular network adapter in Windows. But is it possible make global settings like Linux so I don't have to change it for every network adapter?
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19 views

The extent of my modem's issues on my end?

Yesterday, me and others in my apartment were suddenly unable to access certain (and by certain I mean many random ones) domains without time out issues. e.g. I could try going on amazon.com, but ...
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8 views

Mac OS X “Verify Certificate” every time connecting to secure wireless

Every time connecting to the secure wireless, Macs are getting a prompt to verify the certificate: Verify Certificate Authenticating to network "Network-Name" Before authenticating to ...
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27 views

Wireless network (802.11ac) problems with OS X El Capitan and different region codes

I use an TP-Link Archer C7 v2 as router (802.11ac/5 Ghz) and a Macbook Late 2013 with Mac OS X El Capitan (10.11.3). Normal speed in OS X is around 800-900 MBit/s. After wake from sleep or restart i ...
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12 views

Forward HTTP port on mikrotik 1 to a second mikrotik (both gw's)

Trying to apply the Hairpin-nat concept on mikrotik1, my config is something like: /ip firewall nat add chain=dstnat dst-address=1.1.1.1 protocol=tcp dst-port=80 \ action=dst-nat ...
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3answers
22 views

Is it possible to bridge Ethernet and WiFi on IP level for the same network?

I'd like to expose a virtual machine to a WiFi network. I'd like to have it in the same network. Would setting a route table and ip forwarding works or is it waste of time and I should set up two ...
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1answer
46 views

What is the maximum capacity of a small router?

I developed a Java app, that runs on several Raspberry Pis. This software makes 10 requests to a server at same time during the day. When the first Raspberry was started there wasn't any problem. But ...
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21 views

How to create Wifi access point to share internet from wifi connection on the same adapter

I need to setup the following configuration: My nettop on Debian needs to connect to external wifi. And at the same time and using the same adapter - create an access point for my phone to be able to ...
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0answers
9 views

Port forwarding in pfSense not working

I recently set up a pfSense router and can't get any port forwarding to work from outside my own LAN. I have the following forwarding rule to a local server located at 10.0.1.2: Note that if I ...
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19 views

Powerline Devolo DLAN 650+ Disconnecting Randomly

I have bought a powerline adapter (Devolo DLAN 650+) like a year ago and it started to act weird recently. It randomly disconnects me from the internet (Happens like every 1-2 hours) and it's pretty ...
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1answer
21 views

Setting up a secure Network

I have a home network that I want to make more secure so I brought a second router with the aim of setting up a second, separate network at home to put the more important device on. I checked out the ...
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19 views

Windows 10 drops periodically for a few seconds on networking connections

I'm using windows 10 x32 in a workstation and x64 in a laptop and both have the same problem. After updating from windows 7, the networking connections are not working correctly. Win-10 x32 hangs for ...
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2answers
28 views

how to do port forwarding if my router wan ip is different from public ip?

I have an IP camera and i want to access it from anywhere around the world. I have configured my NETGEAR-router JNR1010 for port forwarding but the WAN IP it gives me is different from the public ip ...
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15 views

Home network ADSL Modem to Ubuntu Server to Wireless Router

I've got a D-Link DSL2544N in bridged mode connected to my Netgear R7000 wireless router, with an Ubuntu dev server hooked up to that through an ethernet port (I'd upgraded from the D-Link and didn't ...
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Hyper-V Network Adapter: virtual device ok, but no connection

As you can see from the following screenshot, I configured an Hyper-V VM with a Windows 10 guest running on a Windows 10 host. Virtual Switching to the Ethernet NIC is configured ok as External + ...
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1answer
10 views

How to copy network credentials from PEAP authenticated computer to a new PC

Backstory I'm a student on our school's school network. There's three tears of network at our school. There's the Student network which the student iPads are connected to. We don't have the keys, but ...
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1answer
13 views

View port 8080 output from own computer

I'm following the tutorial here to learn how to stream video between computers. http://rtcl.kaist.ac.kr/~bkkim/lecture/designlab/DesignLab_RoboCam_Lab6_C.pdf After installing the recommended ...
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18 views

What is a simple STUN test I can perform from a Windows machine?

I want to test whether someone else's Windows machine can access a public STUN service using UDP and receive a response on its network, which I expect is behind a NAT and firewall. I do not have ...
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0answers
19 views

I can't open a single port

I can't open ports on my computer. What I have tried: DMZ my computer on router, set static IP, used nMap to see if ports were closed, asked ISP if they block ports, turned off and let programs ...
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1answer
12 views

Forward HTTP port on mikrotik 1 to an address on another mikrotik

Trying to apply the Hairpin-nat concept on mikrotik1, my config is something like: /ip firewall nat add chain=dstnat dst-address=1.1.1.1 protocol=tcp dst-port=80 \ action=dst-nat ...
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0answers
14 views

Can telnet but nslookup fails

The problem is exactly as described in the title... I'm puzzled. I've seen the opposite many times, but this... So once again, just to confirm: C:\users\274400>nslookup SERVERNAME Server: ...
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35 views

Networking not working due to MAC address in VirtualBox Ubuntu guest?

I have an Ubuntu VirtualBox VM guest under a Windows 10 host. At home I can connect to my wireless network and see the internet if I use bridged adapter, but not NAT. With NAT Ubuntu says I'm ...
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1answer
39 views

Home network - do I need QoS?

I'm planning to install a home network with the following hardware: Netgear UTM50-100 ProSecure Netgear ProSafe JGS524PE (24 Port switch, 12 Port PoE) ESXi Server w/ 2 VM's (AWS Storage Gateway ...
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1answer
24 views

When I connect to work email from an outside device, how am I connecting?

If I send an email form my work email account from my Iphone, how is it connecting? Would it be possible to check the email header of the email sent form my phone and find the IP address and figure ...
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5 views

change response on bridged connection

I am trying to change response on HTTP/HTTPS requests. I can do it locally on my PC with Fiddler software. Now I want to convert my PC to a LAN gateway... I can create a LAN connection with bridge... ...
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1answer
26 views

remote ssh Connection refused

I hope this is the correct forum for this kind of question. I am a beginner in networking, so it could be that the problem is very basic... I am trying to remote ssh into a computer attached to my ...
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31 views

Force Windows 7 to treat all networks as 'Work'

I would like to know if it is possible to have Windows 7 (Home Premium) set to treat all new network connections as 'Work Network'? The default behaviour is that a window pops up and asks you which ...
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24 views

Not receiving emails in Outlook 2007

My business has a small office of 5 computers and our email access is vital on a daily basis as we receive orders and other important details, from a range of companies. The problem started a couple ...
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2answers
40 views

Problems with multiple static network interfaces on Linux

I have created 2 static interfaces, eth0 and eth1. Here's how my /etc/network/interfaces file look like. # This file describes the network interfaces available on your system # and how to activate ...
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Content delivery network vs Web proxy [on hold]

What are the advantages and disadvanteges of using a Content delivery network over a Web proxy?
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2answers
24 views

Troubleshooting slow boot due to network devices

I'm trying to troubleshoot boot times for a relatively modern machine with a SSD. The machine runs Ubuntu Server 14.04.3 LTS and it has two ethernet ports. Network Manager is not installed. All device ...
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2answers
46 views

Router settings for maximum speed

When connected to the ethernet, I get a full 100 MBPS connection. However, through the Wifi, I end up getting 70 MBPS and it seems like the speed decreases when I am away from the router, even ...
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13 views

Debugging a wifi connection?

We have a wireless modem from TWC, model TC8715D from Technicolor, which occasionally stops working even though the connected devices say that they're still connected. On both my phone and my laptop, ...