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Traceroute does not show you every hop in your network, but rather only shows you how many layer 3 hops are being made. A simpler way to understand it is that any network device that does not decrement the TTL will not show up in a traceroute as this answer on the Network Engineering Stack Exchange site explains: Any device, that does not decrement IP ...


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It will work, but keep in mind that each equipment has a latency (the time a frame goes through the switch), so the transmission time from router to final device will be higher (we're talking about 10 - 30 microseconds per switch) if the connection goes through Ethernet switches than going directly through a single cable. To achieve maximum efficiency each ...


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Ethernet Over Ethernet – yes, the entire frame including its Ethernet header is sent by your operating system, and the OS decides what source MAC address to use. In fact, virtual machine systems (like VMware or Hyper-V) already use this to connect VMs to your real LAN – you might have multiple VMs attached to a single Ethernet card, and each VM will have ...


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That all sounds very interesting, I’m not that familiar with most of it but I am familiar enough with SSH to attempt to assist you. You have your two computers A and B. The question is which one is behind a router that you don’t control / a router that you cannot do port forwarding on / a firewall that you don't control. As long as you can SSH from A to B ...


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It sounds like you're probably using NAT for your own internal private subnet. Couple that with firewall capabilities of DD-WRT and only opening ports inbound that you approve (implicit deny), and you should be safe. Note that any plain-text traffic traversing that link is not safe. It could be subject to snooping by the landlord on his upstream ...


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Windows 8, Windows Server 2008,, Windows Server 2012, Windows Vista (and I presume Windows 7, though not listed) have msg command, similar to net send. See also http://www.cezeo.com/tips-and-tricks/msg-command/.


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First, I am going to state explicitly I am really “winging” this answer. I have networking experience a systems administrator, but my networking knowledge is not as deep as most. So hopefully I will get some of this right. And if someone who knows better reads this, please comment or even edit to correct. When you run the ss (socket statistics) command with ...


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Allright, I think this might work for you - assuming you have awk installed and the ip addresses are in ip.txt: cat ip.txt | awk 'BEGIN { FS = "." } ; { printf("%s.%s.%s\n%s.%s.%s.%s\n", $1, $2, $3, $1, $2, $3, $4) }' | sort | uniq -c | sort -rn A little explanation: cat prints the file awk splits the ip addresses in 4 variables and prints both the /24 ...


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Answering the specific question about why the request does not fail, the SQL client being on the local network will be able to find the dynamic SQL port, however clients outside the firewall will not. SQL named instances are configured with "dynamic" ports by default. Once a port has been "dynamically" allocated on the server, it will keep that port unless ...


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cat /proc/net/dev shows how many bytes have been transferred on each interface. You could take a few samples and calculate the current kilobytes per second? Here is a script I found and modified a little traffic.sh. Copy it to some where in your PATH and change permisions to 755 chmod 755 traffic.sh Usage is traffic.sh eth0 Prints out Transmitted: ...


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Short Answer Each service should have its own user. (not sure if I understand) Change permissions on the files/directories you don't want the user have the ability to write to. You're looking for a chroot jail. Long Answer You should be running each service from their own respective user. For example, most packages installed in Arch Linux do this ...


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Your description of the scenario is almost without reproach. However you have overlooked a crucial bit. When the router receives a packet via the public facing port (WAN), it does not only translate based on the source port, but the source IP/port combo, this is a socket. To be fair, there are numerous various of NAT, I suggest a thorough reading NAT'ing ...


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ping was not blocked, it just didn't showed you the failed transmissions while it was running. Take a look at the statistics when you stopped it. 10 packets transmitted, 0 received, 100% packet loss, time 9071ms You see packets were transmitted but not received. You ran it for ~10 seconds and it transmitted 10 packets and waited for 1 second for the ...


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The easiest way is to set the network adapter to be bridged - This means that the VM will connect directly to the host computer's subnet, in the 192.168.16.x range. From there, make sure you can ping it by name to complete the setup. For accessing it outside your network, you can now setup port forwarding - although that's out of the scope of this ...


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Check the bind_address in your /etc/marac file as explained here: If you want to tie the process to a specific interface, edit the bind_address parameter. This defaults to 0.0.0.0 meaning any interface. If both recursive and authoritative DNS is needed (i.e. you add a zonefile) you have to change this to the specific IP addresse(s) where you need ...


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You mean you have a separate Wi-Fi connection that you would like to use instead of your broadband connection? TP-Link has an article on this : Log into TP-LINK wireless router’s management page. Go to Wireless -> Wireless Settings. Check Enable WDS (Enable WDS bridging). Click Search/Survey. On the pop-up window, find the SSID and channel of your root ...


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Windows has the ability to turn most Wi-Fi network cards to an access point, which can be used to share your Internet connection on your laptop with other devices. However, there is no built in software to use this feature in a meaningful and easy to use way. So you would need third party open source or commercial software to use this feature. Virtual ...


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Yes they will. AC support implicitly includes N support. 2.4GHz clients will always use 802.11n 2.4GHz, and 802.11ac 5GHz will support 802.11n clients.


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Looks fine, as long as you're not exceeding 100 m from any switch to switch or switch to device.


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Run as administrator then commands save to firewall if [ "`nvram get wan_proto`" = "pppoe" ]; then wanif="`nvram get pppoe_ifname`" else wanif="`nvram get wan_ifname`" fi # Make sure br1 has access to the internet: iptables -I INPUT -i br1 -m state --state NEW -j logaccept iptables -I FORWARD -i br1 -o $wanif -m state --state NEW -j ACCEPT


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Found it! amnesia:2554 is Google Chrome incognito. I don't now why netstat doesn't identify it right away.


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I don't know if BIND is able to block AAAA zone, but I propose to you other solution: One time ago I was using ipv6 and Wikipedia Servers doesn't work fine with ipv6. I resolved it establishing a manual route to wikipedia range with unreachable config ip route add unreachable n.et.fli.x/YY Then, Firefox automatically change to ipv4 connection Try it ...


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Given what you've described, it appears your network is set up like this: {Internet} --- [ISP Router] --- <10.x.x.x network w/ IP TV> --- [Your Router] --- 192.168.1.x The problem you are describing is the result of the direction of the Default Gateway. In each case above, hosts in the 10.x.x.x network or the 192.168.1.x network will have a ...


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Basically, your computer will default to one connection and fall back on another. It should default to using Ethernet and fall back on the WiFi dongle. I actually had a similar situation using WiFi for internet and an Ethernet connection to a server I was running (to avoid a slower PC to Router to Server connection). When connecting to my server, the ...


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Assuming you can deploy programs on the devices which can connect to your server you're right. But please be careful of security topics as you don't want anybody else "registering" to your server and also to get access to your machines. Also if you make your machines "connectible" it could lead to major issues. All depends on what do you want to do - ...


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I have done something similar in the past using a VPN. Without any details of your devices I don't know to what their capabilities are, I was running a small number machines running Linux (Raspberry Pi's actually) You can configure the remote devices to connect to the VPN server at start up, once they're connected they will appear as if on a private LAN. ...


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How are these two Macintosh computers connected? Via a router? The way hostnames like macbookpro.local work is they are broadcast on the network via Bonjour which is simply Apple’s fancy name for broadcast/multicast network services: Bonjour, also known as zero-configuration networking, enables automatic discovery of devices and services on a local ...


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To connect to ssh you need to connect to port 22 on target server. To do so you need: Ensure that ssh server (openssh-server) is installed and running on Fedora machine. Find out your target machine external IP address (for example, run curl 'http://icanhazip.com' or open that URL in a browser). Find out your target server local IP address (for example, ...


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The device used to "split" is called Ethernet switch. That device can split to any number but some consideration is needed: Your service provider may be happy to allow only limited number of end devices at the line. Each device you connect to main line will need a different ip address --- which is provided by your ISP. Your router will take one ip-address ...



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