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Make the rc.conf(5) 'log_in_vain' knob an integer.

Browse source 
Try this out in -CURRENT, MFC, and then consider dropping the
'log_in_vain' knob all together. It really is something for
sysctl.conf(5).

PR:		bin/32953
Reviewed by:	-bugs discussion
MFC after:	1 week
This commit is contained in:
Crist J. Clark 2002-01-26 09:05:13 +00:00
parent 2fca617186
commit f44609fe71
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=89808
9 changed files with 100 additions and 28 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
etc/defaults/rc.conf
View file

@ -79,7 +79,7 @@ ipfs_enable="NO" # Set to YES to enable saving and restoring
ipfs_program="/sbin/ipfs" # where the ipfs program lives
ipfs_flags="" # additional flags for ipfs
tcp_extensions="YES" # Set to NO to turn off RFC1323 extensions.
log_in_vain="NO" # YES to log connects to ports w/o listeners.
log_in_vain="0" # >=1 to log connects to ports w/o listeners.
tcp_keepalive="YES" # Enable stale TCP connection timeout (or NO).
# For the following two options, you need to have TCP_DROP_SYNFIN and
# TCP_RESTRICT_RST set in your kernel. Please refer to LINT for details.

15
etc/network.subr
View file

@ -846,14 +846,23 @@ network_pass4() {
echo -n 'Additional TCP options:'
case ${log_in_vain} in
[Nn][Oo] | '')
log_in_vain=0
;;
[Yy][Ee][Ss])
log_in_vain=1
;;
[0-9]*)
;;
*)
echo -n ' log_in_vain=YES'
sysctl net.inet.tcp.log_in_vain=1 >/dev/null
sysctl net.inet.udp.log_in_vain=1 >/dev/null
echo " invalid log_in_vain setting: ${log_in_vain}"
log_in_vain=0
;;
esac
[ "${log_in_vain}" -ne 0 ] && echo -n " log_in_vain=${log_in_vain}"
sysctl net.inet.tcp.log_in_vain="${log_in_vain}" >/dev/null
sysctl net.inet.udp.log_in_vain="${log_in_vain}" >/dev/null
echo '.'
network_pass4_done=YES
}

15
etc/rc.d/netoptions
View file

@ -846,14 +846,23 @@ network_pass4() {
echo -n 'Additional TCP options:'
case ${log_in_vain} in
[Nn][Oo] | '')
log_in_vain=0
;;
[Yy][Ee][Ss])
log_in_vain=1
;;
[0-9]*)
;;
*)
echo -n ' log_in_vain=YES'
sysctl net.inet.tcp.log_in_vain=1 >/dev/null
sysctl net.inet.udp.log_in_vain=1 >/dev/null
echo " invalid log_in_vain setting: ${log_in_vain}"
log_in_vain=0
;;
esac
[ "${log_in_vain}" -ne 0 ] && echo -n " log_in_vain=${log_in_vain}"
sysctl net.inet.tcp.log_in_vain="${log_in_vain}" >/dev/null
sysctl net.inet.udp.log_in_vain="${log_in_vain}" >/dev/null
echo '.'
network_pass4_done=YES
}

15
etc/rc.d/network1
View file

@ -846,14 +846,23 @@ network_pass4() {
echo -n 'Additional TCP options:'
case ${log_in_vain} in
[Nn][Oo] | '')
log_in_vain=0
;;
[Yy][Ee][Ss])
log_in_vain=1
;;
[0-9]*)
;;
*)
echo -n ' log_in_vain=YES'
sysctl net.inet.tcp.log_in_vain=1 >/dev/null
sysctl net.inet.udp.log_in_vain=1 >/dev/null
echo " invalid log_in_vain setting: ${log_in_vain}"
log_in_vain=0
;;
esac
[ "${log_in_vain}" -ne 0 ] && echo -n " log_in_vain=${log_in_vain}"
sysctl net.inet.tcp.log_in_vain="${log_in_vain}" >/dev/null
sysctl net.inet.udp.log_in_vain="${log_in_vain}" >/dev/null
echo '.'
network_pass4_done=YES
}

15
etc/rc.d/network2
View file

@ -846,14 +846,23 @@ network_pass4() {
echo -n 'Additional TCP options:'
case ${log_in_vain} in
[Nn][Oo] | '')
log_in_vain=0
;;
[Yy][Ee][Ss])
log_in_vain=1
;;
[0-9]*)
;;
*)
echo -n ' log_in_vain=YES'
sysctl net.inet.tcp.log_in_vain=1 >/dev/null
sysctl net.inet.udp.log_in_vain=1 >/dev/null
echo " invalid log_in_vain setting: ${log_in_vain}"
log_in_vain=0
;;
esac
[ "${log_in_vain}" -ne 0 ] && echo -n " log_in_vain=${log_in_vain}"
sysctl net.inet.tcp.log_in_vain="${log_in_vain}" >/dev/null
sysctl net.inet.udp.log_in_vain="${log_in_vain}" >/dev/null
echo '.'
network_pass4_done=YES
}

15
etc/rc.d/network3
View file

@ -846,14 +846,23 @@ network_pass4() {
echo -n 'Additional TCP options:'
case ${log_in_vain} in
[Nn][Oo] | '')
log_in_vain=0
;;
[Yy][Ee][Ss])
log_in_vain=1
;;
[0-9]*)
;;
*)
echo -n ' log_in_vain=YES'
sysctl net.inet.tcp.log_in_vain=1 >/dev/null
sysctl net.inet.udp.log_in_vain=1 >/dev/null
echo " invalid log_in_vain setting: ${log_in_vain}"
log_in_vain=0
;;
esac
[ "${log_in_vain}" -ne 0 ] && echo -n " log_in_vain=${log_in_vain}"
sysctl net.inet.tcp.log_in_vain="${log_in_vain}" >/dev/null
sysctl net.inet.udp.log_in_vain="${log_in_vain}" >/dev/null
echo '.'
network_pass4_done=YES
}

15
etc/rc.d/routing
View file

@ -846,14 +846,23 @@ network_pass4() {
echo -n 'Additional TCP options:'
case ${log_in_vain} in
[Nn][Oo] | '')
log_in_vain=0
;;
[Yy][Ee][Ss])
log_in_vain=1
;;
[0-9]*)
;;
*)
echo -n ' log_in_vain=YES'
sysctl net.inet.tcp.log_in_vain=1 >/dev/null
sysctl net.inet.udp.log_in_vain=1 >/dev/null
echo " invalid log_in_vain setting: ${log_in_vain}"
log_in_vain=0
;;
esac
[ "${log_in_vain}" -ne 0 ] && echo -n " log_in_vain=${log_in_vain}"
sysctl net.inet.tcp.log_in_vain="${log_in_vain}" >/dev/null
sysctl net.inet.udp.log_in_vain="${log_in_vain}" >/dev/null
echo '.'
network_pass4_done=YES
}

15
etc/rc.network
View file

@ -846,14 +846,23 @@ network_pass4() {
echo -n 'Additional TCP options:'
case ${log_in_vain} in
[Nn][Oo] | '')
log_in_vain=0
;;
[Yy][Ee][Ss])
log_in_vain=1
;;
[0-9]*)
;;
*)
echo -n ' log_in_vain=YES'
sysctl net.inet.tcp.log_in_vain=1 >/dev/null
sysctl net.inet.udp.log_in_vain=1 >/dev/null
echo " invalid log_in_vain setting: ${log_in_vain}"
log_in_vain=0
;;
esac
[ "${log_in_vain}" -ne 0 ] && echo -n " log_in_vain=${log_in_vain}"
sysctl net.inet.tcp.log_in_vain="${log_in_vain}" >/dev/null
sysctl net.inet.udp.log_in_vain="${log_in_vain}" >/dev/null
echo '.'
network_pass4_done=YES
}

21
share/man/man5/rc.conf.5
View file

@ -503,12 +503,19 @@ or other weird behavior.
Some network devices are known
to be broken with respect to these options.
.It Va log_in_vain
.Pq Vt bool
Set to
.Dq NO
by default.
Setting to YES will enable logging of connection attempts to ports that
have no listening socket on them.
.Pq Vt int
Set to 0 by default.
The
.Xr sysctl 8
variables,
.Sy net.inet.tcp.log_in_vain
and
.Sy net.inet.udp.log_in_vain
as described in
.Xr tcp 4
and
.Xr udp 4 ,
are set to the given value.
.It Va tcp_keepalive
.Pq Vt bool
Set to
@ -1876,6 +1883,8 @@ Flags for
.Xr info 1 ,
.Xr makewhatis 1 ,
.Xr vidcontrol 1 ,
.Xr tcp 4 ,
.Xr udp 4 ,
.Xr exports 5 ,
.Xr motd 5 ,
.Xr accton 8 ,