BSD

TCP congestion control

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sysctl net.inet.tcp.cc
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net.inet.tcp.cc.available: newreno
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net.inet.tcp.cc.algorithm: newreno
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kldload cccubic
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kldload ccvegas
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kldload cccdg
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relayd

https://man.openbsd.org/relayd.conf.5 layer 3 and/or layer 7 load-balancer, application layer gateway, or transparent proxy

PF

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pass in all
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pass in from any to any
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pass in proto tcp from any port < 1024 to any
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pass in proto tcp from any to any port 25
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pass in proto tcp from 10.0.0.0/8 port >= 1024 \
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to ! 10.1.2.3 port != ssh
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pass in proto tcp from any os "OpenBSD"
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pass in proto tcp from route "DTAG"
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ipfw

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sudo ipfw add fwd 127.0.0.1,12345 tcp from not me to any 80 in via en1
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sudo ipfw add fwd 127.0.0.1,12345 tcp from not me to any 443 in via en1
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ZFS

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zpool create pool_name da0p3 da1p3
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zpool create pool_name \
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mirror da0 da1 \
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mirror da2 da3 \
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log mirror da4 da5
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zpool add pool cache da2 da3
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zpool list
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zpool get all pool_name
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zpool status pool_name
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zpool iostat -v pool_name 5
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zpool list -v pool_name
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DTrace

CAM Target Layer(ctl)

The ctl subsystem provides SCSI target devices emulation

HA cluster

Last modified 1yr ago