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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1answer
8 views

DHCP server ignores the host declaration

I have 2 fedora23 VMs connected through internal networking. ISC DHCP server is running on VM1. this is the dhcp.conf default-lease-time 600; max-lease-time 800; authoritative; group { option ...
2
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2answers
5k views

How can I solve Windows PPTP VPN issues?

I'm having persistent problems with Windows PPTP VPN connections. The VPN appears up whilst the tunnel won't transfer traffic (ping to a remote IP within the VPN works for a while, and then fails). ...
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1answer
1k views

Utility to monitor a TCP connection for drops

I found some similar questions, but not quite like this, so am going ahead and posting. I use a replication product at a client site. We are running a Windows 2003/2008 server environment. It is ...
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4answers
5k views

Network interface/dhcp problems ubuntu with kvm and network bridge

I have a ubuntu system running 12.10 I am using KVM and have configured a bridge for the virtual machines, which is using nat forwarding. I am having problems with the connection dropping out ...
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2answers
3k views

D-Link DNS-323 NAS Drive - Can't Get Working After BT Install

I had a modem-router with IP 192.168.0.1 which was my DHCP. My DNS-323 had a static address of 192.168.0.100 and all was well with the world:) I recently have had BT Infinity Broadband and now I have ...
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3answers
158 views

Forbid one ip to access the wan

I'm trying to configure my DLink DI524 to do the following: I've got a PS3 on the LAN trough cable and my router is configured with MAC filters (this part is OK and working). But now I'm trying to do ...
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0answers
3 views

Docker beta for mac not setting up bridge to allow access to my container using it's IP?

I have researched this question with no success: why is Docker Beta not setting up a bridge that allows me to access my containers using their IP? I am using Docker beta for mac Version 1.12.0-rc4-...
0
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1answer
21 views

Slow Connection to Server (100kb/s) on all Protocols (HTTP/SSH/FTP)

We have been experiencing an intermittent problem with our server (1gb port) which sporadically will only serve files at a maximum speed of 100kb/s via all protocols (HTTP/FTP/SSH). First we thought ...
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1answer
29 views

Running a server for Minetest

I hope this is the correct stackexchange site to ask this question. I am trying to run a minetest server from my computer (Linux) but I'm unable to connect it from another computer connected to the ...
2
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1answer
3k views

no internet access on guest SSID on netgear WNR2000 router

I have a WNR2000v2 Netgear router that I want to put on our company's network. My boss wanted me to set up two SSIDs, one is for guests and the other is for employees. He wanted the guest wireless ...
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2answers
36 views

How many volts there are in PoE?

I noticed, that there is no clear notification about PoE voltage. For example, I bought TP-Link WA901ND WiFi AP, which is entitled as supporting PoE. There is no clear statement, on which voltage this ...
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2answers
30 views

Access my camera from the internet

I bought a camera put it inside my home to watch over my dog when I m not there. So far it's only visible on the local network, so when I m connected to wifi, using any device I can view camera/move ...
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0answers
9 views

how to specify ports to send Netgear router logs through gmail

I don't have a "site" per se, so don't see how I can use the Google SMTP server which operates on port 25: aspmx.l.google.com. Is it required to set up an MX record to send router logs for a Netgear ...
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0answers
55 views

wired ethernet from wifi, using AP router

I want to connect my device that only have a rj45 port for wired ethernet and nothing else. I have several wireless routers at hand, from several manufacturers (dlink, TPlink, etc) my plan was to ...
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2answers
2k views

Website is working but cannot view from home

Here's a puzzle. Last year I bought some hosting from a hosting company and pointed a number of domains that I own to run from this service. All domains working fine and publicly accessible. Then a ...
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0answers
9 views

WatchGuard - T30-W - Route HTTP traffic through secondary IP address

I've got a WatchGuard T30-W firewall and with it a Trusted Interface (192.168.0.1/24), Optional Interface (172.16.0.1/24) and External Interface (123.123.123.120/29). With my service provider, I have ...
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5answers
4k views

Why can't my router handle heavy traffic from even just one computer?

Whenever I do anything much more demanding then web browsing over my internet connection (via a router), the latency goes from around 20ms to over a thousand. This makes streaming video and gaming a ...
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4answers
50k views

How do I find my D-LINK switch's IP Address?

I have two D-LINK switches in my network, and I seem to have misplaced their IP addresses, so I can't remote on to them. What can I do? They both have DHCP disabled. I've port scaned my network, ...
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4answers
3k views

Wireless speed between two 802.11n devices is 54Mbps, why?

I'm testing with LAN Speed Test (Lite) and a similar Android app. I have a DSL-2750U router, Lenovo T530, Nexus 7 (2012 model), and a Buffalo LinkStation Duo NAS: All Wireless N devices. But my Link ...
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1answer
5k views

Even after I connect my dongle no net comes

I have a tata photon plus dongle,but even after I connect my dongle to my laptop I get no internet. The IE displays "internet explorer cannot display the page" and Chrome displays "Unable to connect ...
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2answers
59 views

How to log websites accessed by device in my network

I'm trying to log all the websites accessed by the devices connected to my router Dlink has this feature by default but it is limited to 40 pages with 10 items per page so it can store only 400 items....
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1answer
10 views

Why does my Ubuntu IPv6 ssh server not work?

I am failing to set up my Ubuntu Server (16.04 LTS) with OpenSSH via IPv6. The server is running inside a VirtualBox Machine, which has its network interface set to "network bridge" (if that is the ...
0
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2answers
28 views

Man-in-the-middle proxy without any certificate errors?

I am working in school as IT engineer. We have legal order from our governmental ISP to collect logs about our users network behavior, to identify infected PC's and so on. I need to filter all ...
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0answers
5 views

forcebondip won't bind selected IP

I'm working on Win7 x64, and I can't get ForceBindIP to work. Issue: When I call ForceBindIP from command line, I get no error, the bound application starts and works normally, but on the default ...
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0answers
133 views

Server and Network Lag

At my home I have a server and my computer. Server has Windows Server 2008 Standart 64 bit installed and then my computer has Windows 7 64 bit installed. My home router is DIR-615 My server has a ...
2
votes
2answers
207 views

I cannot stay logged in to a site with my router

I have a D-Link home router and my isp is Time warner. When I try to login to any site it does not let me. The website does not keep me logged in when I navigate the pages. I have to keep loging in ...
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0answers
8 views

Local hostname resolution not working on 2nd router

I recently replaced my aging and failing Billion 7800n with a TP-Link Archer D7 and am now having trouble reaching other local hosts on the LAN via hostname when connected to the second router (via IP ...
0
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1answer
86 views

Can't configure network on ubuntu server using drac

I have installed Ubuntu 14 server on my server using DRAC of Dell. I have got all the info from my server company like IP Addresses, Gateway, Netmask and so on. I have tried to configure the network ...
0
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3answers
29 views

How to configure Linux iptables to block a specific port of server?

I am trying to implement port restricted cone NAT. I want to block a specific port 3479 of server 192.168.10.102. iptables -A INPUT -i $WAN -p udp -s 192.168.10.102 --sport 3479 -j DROP iptables -A ...
0
votes
2answers
29 views

Tools for monitoring and logging internet connectivity on my home network

My cable modem seems to be getting more unreliable and suffering outages, so I want to monitor the drop-outs - if I can provide a log showing when it's faulty I should be better armed when talking to ...
0
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0answers
6 views

How to share Internet both via wire and Wi-Fi?

I try to convert Windows 7 computer to router. I can create Wi-Fi hotspot via netsh and share Internet via this Wi-Fi. I also can share Internet with wired connection. But how to do that ...
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0answers
8 views

How to get the local addresses available though using VPN and a proxy PAC script?

I'm using a VPN tunnel to connect an internal corporate network. To use the internet connection at the same time I had to set up my internet options, particularly: Automatic configuration [x] ...
0
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1answer
25 views

Relay modem DHCP or fake MACs for multiple IPs?

I have a Arris TG862 cable modem and this modem have 4 Ethernet ports and each of those ports will give you a valid Dynamic IP, not a IP like 192, 10., etc... Up to how many IP's it can serve without ...
2
votes
1answer
16 views

Why am I having connection difficulties across two subnets?

I'm attempting to wirelessly connect my neighbor's home network with mine. We each have our own internet services and subnets which we want to preserve, but still be able to access services between ...
1
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1answer
32 views

What cannot have redundancy\high availability\failover in a server?

I know some big companies such as IBM, Amazon, and governments require a high degree for availability and data retention with their servers. To achieve this they use redundancy. My question is, what ...
1
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0answers
25 views

Windows 10 Crossed Network Streams

This is very bizarre, but it's happened twice now, so I want to see if anyone else has run into it. On Windows 10, after an automatic Windows Update, I am getting crossing network streams, meaning ...
0
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1answer
61 views

How to use arpwatch to detect an IP address conflict

Manually I detected an IP address conflict, which was caused by my mistake. I can solve this. But before solving I want to automatic detect an IP address conflict. So next time I do not have to search ...
0
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0answers
18 views

Virtualbox Bridge vs NAT (same setup, NAT works but bridge doesn't)

I installed CentOS 7 on a virtualbox machine. When I set the network to NAT, ping gets packets back, wget gets pages and yum also works. However, if I shutdown the machine and set the network to ...
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0answers
5 views

KVM bridge uses a different subnet

I have a fresh xenial install and need to rum a kvm vm on it. I would like for it to dhcp an ip on the same subnet as home LAN. i edited /etc/network/interfaces to remove enp6s0f0 (my eth0) and ...
3
votes
1answer
156 views

Gigabit Ethernet switch from 1Gbps to 100Mbps back and forth

Alright, you're my last chance on resolving this problem that I have been trying to fix for a couple of months so far. Problem My gigabit Ethernet speed switches from 1Gbps to 100Mbps frequently. ...
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1answer
20 views

Virtual Box Security

I installed vb in my kubuntu, but I'm a little concern about viruses or other stuff infiltrating on my linux through the OS installed, such as Windos 7. So, how can I avoid any information coming out ...
0
votes
1answer
15 views

How to disable Remote Management and Screen Sharing Ports in OS X El Capitan Application Firewall?

I have purchased an OS X 10.11 VPS. I would like to lock down the box to only allow port 22 SSH through the firewall. So I turned on the application firewall under System Preferences -> Security and ...
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3answers
845 views

Problem with Jumbo Frames

I am trying to set up jumbo frames on my gigabit home LAN but no luck so far. My setup is: * D-Link DIR-655 router, HW Revision A3, Firmware 1.21 EU * Synology DS107+, Firmware 3.0-1337 * Laptop w/ ...
2
votes
5answers
5k views

Windows 8.1 network keeps dropping

When I'm in the office, whether plugged in or using wireless, the network drops several times an hour. It also takes a while (1 minute or more) to re-identify the network (identifying the network when ...
140
votes
10answers
152k views

Is it possible to ping an address:port?

I am not into networking, and I have the following question related to the Linux ping command. Can I only ping an address? For example: miner@raspberrypi ~ $ ping onofri.org PING onofri.org (67.222....
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7answers
94k views

Display list of computers on a LAN in Linux

I'm a web dev who is trying to get a better handle on security. I'm trying to figure out a way (on Linux/Debian based distros) to list all computers on the same LAN my netbook is on. I tried "arp -n" ...
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votes
2answers
440 views

How to prevent users in LAN communicating with each other using D-Link DIR-815 router?

I would like to create a firewall rule which prevents users in the LAN to communicate directly with other users. In other words, deny access from any LAN address to all other LAN addresses. Is this ...
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2answers
80 views
+50

Can't connect to router settings through Ethernet

I have a D-Link router. I want to connect to the settings menu (using 192.168.1.1) in order to do things like port forwarding. I am unable to connect to this address while using Ethernet (Chrome just ...
0
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2answers
75 views

Macbook Pro loses Internet constantly for a couple seconds

My new Macbook Pro (13", i7, Early2015, OSX 10.11.4) is loosing its Internet connection every couple minutes. The WiFi itself stays logged in, but the internet connection is gone. After a short while ...
0
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2answers
17 views

accessing website from virtual box guest as localhost as if on the host

On my host machine (dev pc) is a copy of IIS express hosting a load of sites. Is there a way I can forward localhost:28101 to localhost:28101 on the host. For example if I visit localhost:28101 ...