1 files changed, 80 insertions, 0 deletions
diff --git a/scripts/os/freebsd/10-sysctls b/scripts/os/freebsd/10-sysctls
new file mode 100644
index 0000000..a59d54f
--- /dev/null
+++ b/scripts/os/freebsd/10-sysctls
@@ -0,0 +1,80 @@
+#!/bin/sh
+
+case $BOXCONF_OS_VERSION in
+  13.*)
+    set_sysctl \
+      net.inet.ip.check_interface=1 \
+      net.inet.tcp.rfc6675_pipe=1
+    ;;
+  *)
+    set_sysctl \
+      net.inet.ip.rfc1122_strong_es=1
+    ;;
+esac
+
+load_kernel_module cc_htcp
+
+set_sysctl \
+  net.inet.icmp.drop_redirect=1 \
+  net.inet.ip.process_options=0 \
+  net.inet.ip.random_id=1 \
+  net.inet.ip.redirect=0 \
+  net.inet.tcp.abc_l_var=44 \
+  net.inet.tcp.always_keepalive=0 \
+  net.inet.tcp.cc.abe=1 \
+  net.inet.tcp.cc.algorithm=htcp \
+  net.inet.tcp.cc.htcp.adaptive_backoff=1 \
+  net.inet.tcp.cc.htcp.rtt_scaling=1 \
+  net.inet.tcp.drop_synfin=1 \
+  net.inet.tcp.ecn.enable=1 \
+  net.inet.tcp.fastopen.server_enable=1 \
+  net.inet.tcp.icmp_may_rst=0 \
+  net.inet.tcp.initcwnd_segments=44 \
+  net.inet.tcp.minmss=536 \
+  net.inet.tcp.msl=2500 \
+  net.inet.tcp.mssdflt=1448 \
+  net.inet.tcp.nolocaltimewait=1 \
+  net.inet.tcp.path_mtu_discovery=0 \
+  net.inet.tcp.recvbuf_max="$tcp_buffer_size" \
+  net.inet.tcp.recvspace=65536 \
+  net.inet.tcp.sendbuf_inc=65536 \
+  net.inet.tcp.sendbuf_max="$tcp_buffer_size" \
+  net.inet.tcp.sendspace=65536 \
+  net.inet.tcp.syncookies=0 \
+  net.inet6.ip6.redirect=0 \
+  security.bsd.unprivileged_proc_debug="$allow_proc_debug"
+
+# Some sysctls cannot be set within jails.
+if [ "$BOXCONF_VIRTUALIZATION_TYPE" != jail ]; then
+  set_sysctl \
+    hw.kbd.keymap_restrict_change=4 \
+    kern.coredump=0 \
+    kern.elf32.allow_wx="$allow_wx" \
+    kern.elf32.aslr.pie_enable=1 \
+    kern.elf64.allow_wx="$allow_wx" \
+    kern.ipc.maxsockbuf="$tcp_buffer_size" \
+    kern.ipc.shm_use_phys=1 \
+    kern.ipc.soacceptqueue=1024 \
+    kern.ipc.somaxconn=1024 \
+    kern.random.fortuna.minpoolsize=128 \
+    kern.randompid=1 \
+    net.inet.tcp.fast_finwait2_recycle=1 \
+    net.inet.tcp.finwait2_timeout=5000 \
+    net.inet.tcp.keepcnt=2 \
+    net.inet.tcp.keepidle=62000 \
+    net.inet.tcp.keepinit=5000 \
+    net.inet.tcp.minmss=536 \
+    net.inet.tcp.minmss=536 \
+    security.bsd.hardlink_check_gid=0 \
+    security.bsd.hardlink_check_uid=0 \
+    security.bsd.see_other_gids=0 \
+    security.bsd.see_other_uids=0 \
+    security.bsd.unprivileged_read_msgbuf=0 \
+    vfs.zfs.min_auto_ashift=12
+
+  # FreeBSD automatically scales kern.maxfilesperproc with the amount of memory.
+  # On systems with large amounts of RAM, this can cause strange lags with some 
+  # applications that attempt to close every possible file descriptor.
+  # Therefore, we arbitrarily cap this value at 65535.
+  [ "$(sysctl -n kern.maxfilesperproc)" -le 65535 ] || set_sysctl kern.maxfilesperproc=65535
+fi