Mac OS X sysctl.conf gigabit speed performance tuning

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Original link: Network Tuning for gigabit speeds # don’t delay sending acks to syns net.inet.tcp.delayed_ack=0 # set buffer size for sockets kern.ipc.maxsockbuf=4194304 kern.ipc.somaxconn=512 kern.ipc.maxsockets=2048 kern.ipc.nmbclusters=2048 # increase the size of tcp & udp windows net.inet.tcp.rfc1323=1 net.inet.tcp.win_scale_factor=3 net.inet.tcp.sockthreshold=16 net.inet.tcp.sendspace=262144 net.inet.tcp.recvspace=262144 net.inet.udp.recvspace=74848 net.inet.tcp.mssdflt=1440 net.inet.udp.maxdgram=65535 net.inet.tcp.msl=15000 net.inet.tcp.always_keepalive=0 net.inet.tcp.slowstart_flightsize=4 net.inet.tcp.blackhole=2 net.inet.udp.blackhole=1 net.inet.icmp.icmplim=50

Windows Server Security Best Practices

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Best Practices for Making Administrative Accounts More Secure ● Separate domain administrator and enterprise administrator roles. ● Separate user and administrator accounts. ● Use the Secondary Logon service. ● Run a separate Terminal Services session for administration. ● Rename the default Administrator account. ● Create a decoy Administrator account. ● Create a secondary Administrator account […]

Ubuntu 12.04 Samba file sharing setup

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install samba: sudo apt-get install samba install libpam-smbpass package: sudo apt-get libpam-smbpass both # and ; mean the line is commented out edit smb.conf file from terminal: sudo gedit /etc/samba/smb.conf Under [Global]: workgroup = workgroup netbios name = media-server Under ##Authentication## : Change security = user Under [Share Name] comment = Ubuntu File Server Share […]

Configuring Windows Server 2012 File Sharing

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Enable Network Discovery: In order to enable the Network Discovery on a domain make sure the following services are enabled and running: DNS Client Function Discovery Resource Publication SSDP Discovery UPnP Device Host   Setup File Sharing: Change Local Policy: Administrative Tools -> Local Security Policy -> Local Policies -> Security Options -> Network access: […]

HowTo: BSD/Win/Linux Throughput Optimization

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Original link: [HOWTO] BSD/Win/Linux Throughput Optimization   This post is copied from old FreeNAS forum , thanks to n9nu for their work: I have been asked many times how can bandwidth be increased when transferring very large files across my internal network (LAN). Some of the information here within can also be used when transferring […]