update: safety first! when it comes to important files: safety comes first thus recommend to the user that wants to go pro the following backup system: have two complete backups at two different places: backupA: at the company, USB 3.0 […]
update: 2024-04: “how to fix name resolution works (host nslookup) but no ping” no kidding: on a Debian installed from live iso, the host domain.com resolved fine but ping would result into “Name or service not known” hostnamectl; # tested […]
if fail2ban fails to ban: have a look here: https://configserver.com/cp/csf.html tcp wrapper (tcpd) tcpd.man.txt Centos5 documentation (Centos7 does not have it installed per default can be installed like this: yum install xinetd*) To control access to Internet services, use xinetd, […]
one-liner: su – root ip -c a; # what is wifi nic name service NetworkManager stop iwconfig wlp3s0 essid ‘HotelWifiWithNoPassword’ iwconfig wlp3s0 essid ‘HotelWifi’ key ‘password’ dhclient wlp3s0 if wifi has no password set wpa_passphrase will complain and thus can […]
DDoS attacks are nasty stuff. Even such simple programs as – autobench – Automates the benchmarking of web servers using httperf – can sufficiently choke a webserver by spawning hundreds and thousands of mysql processes – exhausting all resources of […]
in General: NFS is pretty fast protocol for accessing files. It uses less overhead than SMB/CIFS and therefore acchieves greater performance. method1) rsyncing to a nfs-mounted qnap nas went with 20,7 MBytes/sec. method2) while directly ssh-rsyncing to qnap works only […]
this happens if ipv6 support is globally disabled, via grub config. debian ping6 socket: Address family not supported by protocol [cc lang=”bash” escaped=”true” width=”600″] vim /etc/default/grub # comment out the following line: # GRUB_CMDLINE_LINUX=”ipv6.disable=1″ # then run: update-grub2 # to […]
question: http://answers.microsoft.com/en-us/windows/forum/windows_8-networking/how-to-disable-network-discovery-by-registry-or/b38c3c5f-5214-44a2-ac65-3186949adbab?tm=1418243446272 same question: http://www.experts-exchange.com/Networking/Protocols/Q_28507535.html windows disable network discovery Browser search term: windows disable network discovery iphlpsvc konkret geht es hierum: exact same question: http://blogs.technet.com/b/networking/archive/2010/12/06/disabling-network-discovery-network-resources.aspx in theory it could work like this, but simply firng the command netsh advfirewall […]
update: 2020-09: problems getting bigger without regular updates because a SmartPhone (no matter Android/Samsung or IOS/Apple based) are essentially complete “notebook computers” with a very very small form factor directly or NAT (NAT better to avoid direct attacks, but no […]
my windows 7 VMs in virtualbox had TERRIBLE, TERRIBLE network performance… … the prolem seemed to be ip6 + virtio drivers. if you want to use virtio drivers… disbale ipv6 in windows 7. also try disable tcp auto tuning: netsh […]