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9

The kernel lists them by name in /sys, both separately in (e.g.) the tree of PCI devices -- although finding them there if you don't know where they are to start with is not simple -- and together via symlinks in /sys/class/net. E.g.: > ls /sys/class/net em1 lo wlp6so Another example: > ls /sys/class/net lo p6s1 wlan0 If you are not sure which is ...


6

Yes it's entirely possible that your firewall is blocking the traceroute from being successful. To understand why this is failing it's best to consult the traceroute man page. excerpt This program attempts to trace the route an IP packet would follow to some internet host by launching probe packets with a small ttl (time to live) then listening for an ...


6

So as per my understanding, the firewall of my school network is blocking my server from contacting the outside world. Is this correct? No, I guess it can block almost all traffic but allow at least TCP port 80. traceroute in Linux default use UDP, ping use ICMP, so as your output, it seems that those traffic have been blocked by the firewall. How ...


5

Your school firewall is probably blocking most traffic outbound on ports other than TCP/80 which is the default IP port for web traffic. In particular ping and (most of the time) traceroute send the ICMP ECHO_REQUEST packet and many companies and schools block all ICMP traffic through their firewalls as it can be used to find out information of the network ...


5

You have the symptoms of an MTU problem: some TCP connections freeze, more or less reproducibly for a given command or URL but with no easily discernible overall pattern. A telltale symptom is that interactive ssh sessions work well as long as you don't run commands with large output. See Can't access select https sites on Linux over PPPoE for an ...


3

You could get this with a small set of iptables rules redirecting all traffic to port 80 and 443 your AP's address: # iptables -t nat -A PREROUTING -p tcp --dport 80 -j DNAT --to-destination localhost:80 # iptables -t nat -A PREROUTING -p tcp --dport 443 -j DNAT --to-destination localhost:80 Additionally you should have your HTTP server configured to ...


2

Gilles' answer is completely correct, but there is also another potential cause for this. There was a bug in version 2.3.0 of OpenVPN which would disconnect clients when sending large chunks of data: https://community.openvpn.net/openvpn/ticket/263 This issue only occurred when using TCP. UDP was completely unaffected.


2

I don't know about Windows Phones or iPhones, but Android phones cannot detect ad-hoc networks out of the box. You will probably need to use infrastructure mode in order for your phone to see your network. Alternatively, search for Android add-ons that enable connections to ad hoc wifi networks (success seems dependent on the device and Android version).


2

I have always used Unison in a star topology to synchronise my four machines. The reason for this is that it is not a versioning file system (like git for example), but rather a synchronisation tool. If you do opt for a distributed topology (which you will have to set by creating a configuration file for each device and synchronising all), you will ...


1

The whole setup is too long to be described here, also there are multiple ways how you might want to configure it, so to provide an overview: You need to setup OpenVPN server. I would advice to do it on a VPS with external IP. Setup OpenVPN clients on other servers and android devices to connect to your OpenVPN server. You can find quick ...


1

You're looking for bonding. This driver is intended for (surprise!) bonding individual links to one logical link. Several modes are supported, one of them is fail-over mode (you have one primary link, in your case wired ethernet, and several fail-over links, which take over when the primary link fails). What you'll need is CONFIG_BONDING enabled in the ...


1

Install HostAPD: yast -i hostapd Configure hostapd in the file /etc/hostapd.conf, especially consider the settings (ESSID will be test, driver will be for the WLAN driver, bridge will be for the bridge you create later on, channel is arbitrary, hw_mode=g means the speed as in A/B/G/N). driver=nl80211 bridge=br0 channel=3 ...


1

I think that the error does not come from the -net statement, but from: -chardev socket,host=localhost,port=7777,server,nowait,id=port1-char The statement uses already the port 7777. For the port forwarding, with -net user,hostfwd=tcp::7777-:8001 it works fine when not setting up the virtio serial channel. If I understand right, you want to set up a ...


1

As discussed in the comments, it seems like the problem was the VPN gateway wrongly sending ICMP redirects to the app server because setting the sysctl settings net.ipv4.conf.all.send_redirects and/or net.ipv4.conf.eth0.send_redirects to 0 appears to have solved the problem. I don't know why the VPN gateway would tell the app server to go via the outer ...


1

Ostinato looks to be one such tool that you're looking for. Ostinato is an open-source, cross-platform network packet crafter/traffic generator and analyzer with a friendly GUI. Craft and send packets of several streams with different protocols at different rates. Screenshot      Screencast Ostinato Packet/Traffic Generator ...



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