Linux ip-172-31-23-187 5.15.0-1084-aws #91~20.04.1-Ubuntu SMP Fri May 2 07:00:04 UTC 2025 aarch64
Apache/2.4.41 (Ubuntu)
: 172.31.23.187 | : 172.31.80.121
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usr /
sbin /
[ HOME SHELL ]
Name
Size
Permission
Action
ModemManager
1.78
MB
-rwxr-xr-x
a2disconf
15.89
KB
-rwxr-xr-x
a2dismod
15.89
KB
-rwxr-xr-x
a2dissite
15.89
KB
-rwxr-xr-x
a2enconf
15.89
KB
-rwxr-xr-x
a2enmod
15.89
KB
-rwxr-xr-x
a2ensite
15.89
KB
-rwxr-xr-x
a2query
9.64
KB
-rwxr-xr-x
aa-remove-unknown
3
KB
-rwxr-xr-x
aa-status
8.63
KB
-rwxr-xr-x
aa-teardown
139
B
-rwxr-xr-x
accessdb
10.15
KB
-rwxr-xr-x
add-shell
860
B
-rwxr-xr-x
addgnupghome
3
KB
-rwxr-xr-x
addgroup
36.9
KB
-rwxr-xr-x
adduser
36.9
KB
-rwxr-xr-x
agetty
59.15
KB
-rwxr-xr-x
apache2
699.64
KB
-rwxr-xr-x
apache2ctl
7.06
KB
-rwxr-xr-x
apachectl
7.06
KB
-rwxr-xr-x
apparmor_parser
1.4
MB
-rwxr-xr-x
apparmor_status
8.63
KB
-rwxr-xr-x
applygnupgdefaults
2.17
KB
-rwxr-xr-x
arp
65.01
KB
-rwxr-xr-x
arpd
70.05
KB
-rwxr-xr-x
arptables
207
KB
-rwxr-xr-x
arptables-nft
207
KB
-rwxr-xr-x
arptables-nft-restore
207
KB
-rwxr-xr-x
arptables-nft-save
207
KB
-rwxr-xr-x
arptables-restore
207
KB
-rwxr-xr-x
arptables-save
207
KB
-rwxr-xr-x
atd
25.95
KB
-rwxr-xr-x
badblocks
26.1
KB
-rwxr-xr-x
bcache-super-show
13.93
KB
-rwxr-xr-x
blkdeactivate
14.49
KB
-rwxr-xr-x
blkdiscard
26.01
KB
-rwxr-xr-x
blkid
114.04
KB
-rwxr-xr-x
blkzone
66.01
KB
-rwxr-xr-x
blockdev
58.01
KB
-rwxr-xr-x
bridge
102.07
KB
-rwxr-xr-x
cache_check
1.2
MB
-rwxr-xr-x
cache_dump
1.2
MB
-rwxr-xr-x
cache_metadata_size
1.2
MB
-rwxr-xr-x
cache_repair
1.2
MB
-rwxr-xr-x
cache_restore
1.2
MB
-rwxr-xr-x
cache_writeback
1.2
MB
-rwxr-xr-x
capsh
26.09
KB
-rwxr-xr-x
cfdisk
94.35
KB
-rwxr-xr-x
cgdisk
186.26
KB
-rwxr-xr-x
chcpu
42.01
KB
-rwxr-xr-x
check_forensic
952
B
-rwxr-xr-x
chgpasswd
61.83
KB
-rwxr-xr-x
chmem
58.01
KB
-rwxr-xr-x
chpasswd
57.84
KB
-rwxr-xr-x
chroot
38.22
KB
-rwxr-xr-x
cpgr
59.88
KB
-rwxr-xr-x
cppw
59.88
KB
-rwxr-xr-x
cron
50.35
KB
-rwxr-xr-x
cryptdisks_start
1.51
KB
-rwxr-xr-x
cryptdisks_stop
844
B
-rwxr-xr-x
cryptsetup
127.27
KB
-rwxr-xr-x
cryptsetup-reencrypt
97.09
KB
-rwxr-xr-x
ctrlaltdel
34.01
KB
-rwxr-xr-x
debugfs
225.52
KB
-rwxr-xr-x
delgroup
16.11
KB
-rwxr-xr-x
deluser
16.11
KB
-rwxr-xr-x
depmod
162.18
KB
-rwxr-xr-x
devlink
146.23
KB
-rwxr-xr-x
dhclient
508.59
KB
-rwxr-xr-x
dhclient-script
15.92
KB
-rwxr-xr-x
dmeventd
46.03
KB
-rwxr-xr-x
dmidecode
110.57
KB
-rwxr-xr-x
dmsetup
178.64
KB
-rwxr-xr-x
dmstats
178.64
KB
-rwxr-xr-x
doc_loadbios
9.93
KB
-rwxr-xr-x
docfdisk
13.93
KB
-rwxr-xr-x
dosfsck
53.94
KB
-rwxr-xr-x
dosfslabel
53.94
KB
-rwxr-xr-x
dpkg-preconfigure
3.58
KB
-rwxr-xr-x
dpkg-reconfigure
4.34
KB
-rwxr-xr-x
dumpe2fs
26.09
KB
-rwxr-xr-x
e2freefrag
14.09
KB
-rwxr-xr-x
e2fsck
314.91
KB
-rwxr-xr-x
e2image
34.09
KB
-rwxr-xr-x
e2label
102.3
KB
-rwxr-xr-x
e2mmpstatus
26.09
KB
-rwxr-xr-x
e2scrub
7.13
KB
-rwxr-xr-x
e2scrub_all
5.27
KB
-rwxr-xr-x
e2undo
18.09
KB
-rwxr-xr-x
e4crypt
22.16
KB
-rwxr-xr-x
e4defrag
26.09
KB
-rwxr-xr-x
ebtables
207
KB
-rwxr-xr-x
ebtables-nft
207
KB
-rwxr-xr-x
ebtables-nft-restore
207
KB
-rwxr-xr-x
ebtables-nft-save
207
KB
-rwxr-xr-x
ebtables-restore
207
KB
-rwxr-xr-x
ebtables-save
207
KB
-rwxr-xr-x
era_check
1.2
MB
-rwxr-xr-x
era_dump
1.2
MB
-rwxr-xr-x
era_invalidate
1.2
MB
-rwxr-xr-x
era_restore
1.2
MB
-rwxr-xr-x
ethtool
362.81
KB
-rwxr-xr-x
faillock
13.93
KB
-rwxr-xr-x
fatlabel
53.94
KB
-rwxr-xr-x
fdformat
30.01
KB
-rwxr-xr-x
fdisk
146.04
KB
-rwxr-xr-x
filefrag
14.11
KB
-rwxr-xr-x
findfs
10.01
KB
-rwxr-xr-x
fixparts
62.26
KB
-rwxr-xr-x
flash-kernel
858
B
-rwxr-xr-x
flash_erase
38.01
KB
-rwxr-xr-x
flash_eraseall
150
B
-rwxr-xr-x
flash_lock
10.01
KB
-rwxr-xr-x
flash_otp_dump
9.93
KB
-rwxr-xr-x
flash_otp_info
9.93
KB
-rwxr-xr-x
flash_otp_lock
9.93
KB
-rwxr-xr-x
flash_otp_write
9.93
KB
-rwxr-xr-x
flash_unlock
10.01
KB
-rwxr-xr-x
flashcp
14.02
KB
-rwxr-xr-x
fsadm
23.54
KB
-rwxr-xr-x
fsck
46.04
KB
-rwxr-xr-x
fsck.btrfs
1.16
KB
-rwxr-xr-x
fsck.cramfs
38.04
KB
-rwxr-xr-x
fsck.ext2
314.91
KB
-rwxr-xr-x
fsck.ext3
314.91
KB
-rwxr-xr-x
fsck.ext4
314.91
KB
-rwxr-xr-x
fsck.fat
53.94
KB
-rwxr-xr-x
fsck.minix
118.04
KB
-rwxr-xr-x
fsck.msdos
53.94
KB
-rwxr-xr-x
fsck.vfat
53.94
KB
-rwxr-xr-x
fsck.xfs
1.92
KB
-rwxr-xr-x
fsfreeze
14.01
KB
-rwxr-xr-x
fstab-decode
6.09
KB
-rwxr-xr-x
fstrim
66.01
KB
-rwxr-xr-x
ftl_check
10.01
KB
-rwxr-xr-x
ftl_format
14.01
KB
-rwxr-xr-x
gdisk
194.26
KB
-rwxr-xr-x
genl
78.05
KB
-rwxr-xr-x
getcap
10.09
KB
-rwxr-xr-x
getpcaps
10.09
KB
-rwxr-xr-x
getty
59.15
KB
-rwxr-xr-x
groupadd
82.43
KB
-rwxr-xr-x
groupdel
78.25
KB
-rwxr-xr-x
groupmems
61.86
KB
-rwxr-xr-x
groupmod
86.34
KB
-rwxr-xr-x
grpck
57.8
KB
-rwxr-xr-x
grpconv
53.69
KB
-rwxr-xr-x
grpunconv
53.69
KB
-rwxr-xr-x
grub-install
1.07
MB
-rwxr-xr-x
grub-macbless
863.2
KB
-rwxr-xr-x
grub-mkconfig
8.54
KB
-rwxr-xr-x
grub-mkdevicemap
211.31
KB
-rwxr-xr-x
grub-probe
875.45
KB
-rwxr-xr-x
grub-reboot
4.73
KB
-rwxr-xr-x
grub-set-default
3.47
KB
-rwxr-xr-x
halt
944.84
KB
-rwxr-xr-x
hdparm
128.07
KB
-rwxr-xr-x
httxt2dbm
9.93
KB
-rwxr-xr-x
hwclock
90.06
KB
-rwxr-xr-x
iconvconfig
26.14
KB
-rwxr-xr-x
ifconfig
80.83
KB
-rwxr-xr-x
init
1.48
MB
-rwxr-xr-x
insmod
162.18
KB
-rwxr-xr-x
installkernel
2.58
KB
-rwxr-xr-x
integritysetup
51.97
KB
-rwxr-xr-x
invoke-rc.d
16.64
KB
-rwxr-xr-x
ip
600.15
KB
-rwxr-xr-x
ip6tables
92.71
KB
-rwxr-xr-x
ip6tables-apply
6.89
KB
-rwxr-xr-x
ip6tables-legacy
92.71
KB
-rwxr-xr-x
ip6tables-legacy-restore
92.71
KB
-rwxr-xr-x
ip6tables-legacy-save
92.71
KB
-rwxr-xr-x
ip6tables-nft
207
KB
-rwxr-xr-x
ip6tables-nft-restore
207
KB
-rwxr-xr-x
ip6tables-nft-save
207
KB
-rwxr-xr-x
ip6tables-restore
92.71
KB
-rwxr-xr-x
ip6tables-restore-translate
207
KB
-rwxr-xr-x
ip6tables-save
92.71
KB
-rwxr-xr-x
ip6tables-translate
207
KB
-rwxr-xr-x
ipmaddr
17.93
KB
-rwxr-xr-x
iptables
92.71
KB
-rwxr-xr-x
iptables-apply
6.89
KB
-rwxr-xr-x
iptables-legacy
92.71
KB
-rwxr-xr-x
iptables-legacy-restore
92.71
KB
-rwxr-xr-x
iptables-legacy-save
92.71
KB
-rwxr-xr-x
iptables-nft
207
KB
-rwxr-xr-x
iptables-nft-restore
207
KB
-rwxr-xr-x
iptables-nft-save
207
KB
-rwxr-xr-x
iptables-restore
92.71
KB
-rwxr-xr-x
iptables-restore-translate
207
KB
-rwxr-xr-x
iptables-save
92.71
KB
-rwxr-xr-x
iptables-translate
207
KB
-rwxr-xr-x
iptunnel
21.93
KB
-rwxr-xr-x
irqbalance
79.13
KB
-rwxr-xr-x
irqbalance-ui
34.18
KB
-rwxr-xr-x
iscsi-iname
13.93
KB
-rwxr-xr-x
iscsi_discovery
5.16
KB
-rwxr-xr-x
iscsiadm
369.8
KB
-rwxr-xr-x
iscsid
381.95
KB
-rwxr-xr-x
iscsistart
345.94
KB
-rwxr-xr-x
isosize
22.01
KB
-rwxr-xr-x
jffs2dump
26.01
KB
-rwxr-xr-x
jffs2reader
18.03
KB
-rwxr-xr-x
kbdrate
13.93
KB
-rwxr-xr-x
killall5
22.21
KB
-rwxr-xr-x
kpartx
41.95
KB
-rwxr-xr-x
ldattach
30.01
KB
-rwxr-xr-x
ldconfig
387
B
-rwxr-xr-x
ldconfig.real
602.84
KB
-rwxr-xr-x
locale-gen
4.3
KB
-rwxr-xr-x
logrotate
74.02
KB
-rwxr-xr-x
logsave
13.94
KB
-rwxr-xr-x
losetup
106.11
KB
-rwxr-xr-x
lsmod
162.18
KB
-rwxr-xr-x
lsmtd
66.6
KB
-rwxr-xr-x
luksformat
3.32
KB
-rwxr-xr-x
lvchange
2.74
MB
-rwxr-xr-x
lvconvert
2.74
MB
-rwxr-xr-x
lvcreate
2.74
MB
-rwxr-xr-x
lvdisplay
2.74
MB
-rwxr-xr-x
lvextend
2.74
MB
-rwxr-xr-x
lvm
2.74
MB
-rwxr-xr-x
lvmconfig
2.74
MB
-rwxr-xr-x
lvmdiskscan
2.74
MB
-rwxr-xr-x
lvmdump
10.07
KB
-rwxr-xr-x
lvmpolld
235.87
KB
-rwxr-xr-x
lvmsadc
2.74
MB
-rwxr-xr-x
lvmsar
2.74
MB
-rwxr-xr-x
lvreduce
2.74
MB
-rwxr-xr-x
lvremove
2.74
MB
-rwxr-xr-x
lvrename
2.74
MB
-rwxr-xr-x
lvresize
2.74
MB
-rwxr-xr-x
lvs
2.74
MB
-rwxr-xr-x
lvscan
2.74
MB
-rwxr-xr-x
make-bcache
18.01
KB
-rwxr-xr-x
make-ssl-cert
3.78
KB
-rwxr-xr-x
mdadm
565.05
KB
-rwxr-xr-x
mdmon
321.01
KB
-rwxr-xr-x
mii-tool
18.37
KB
-rwxr-xr-x
mkdosfs
34.35
KB
-rwxr-xr-x
mke2fs
130.35
KB
-rwxr-xr-x
mkfs
14.01
KB
-rwxr-xr-x
mkfs.bfs
30.01
KB
-rwxr-xr-x
mkfs.btrfs
451.22
KB
-rwxr-xr-x
mkfs.cramfs
33.94
KB
-rwxr-xr-x
mkfs.ext2
130.35
KB
-rwxr-xr-x
mkfs.ext3
130.35
KB
-rwxr-xr-x
mkfs.ext4
130.35
KB
-rwxr-xr-x
mkfs.fat
34.35
KB
-rwxr-xr-x
mkfs.jffs2
51.21
KB
-rwxr-xr-x
mkfs.minix
106.02
KB
-rwxr-xr-x
mkfs.msdos
34.35
KB
-rwxr-xr-x
mkfs.ntfs
82.05
KB
-rwxr-xr-x
mkfs.ubifs
86.01
KB
-rwxr-xr-x
mkfs.vfat
34.35
KB
-rwxr-xr-x
mkfs.xfs
342.14
KB
-rwxr-xr-x
mkhomedir_helper
17.94
KB
-rwxr-xr-x
mkinitramfs
11.55
KB
-rwxr-xr-x
mklost+found
10.09
KB
-rwxr-xr-x
mkntfs
82.05
KB
-rwxr-xr-x
mkswap
102.02
KB
-rwxr-xr-x
modinfo
162.18
KB
-rwxr-xr-x
modprobe
162.18
KB
-rwxr-xr-x
mount.fuse
9.99
KB
-rwxr-xr-x
mount.lowntfs-3g
106.63
KB
-rwxr-xr-x
mount.ntfs
142.66
KB
-rwxr-xr-x
mount.ntfs-3g
142.66
KB
-rwxr-xr-x
mpathpersist
26.82
KB
-rwxr-xr-x
mtd_debug
14.01
KB
-rwxr-xr-x
mtdinfo
46.01
KB
-rwxr-xr-x
mtdpart
10.01
KB
-rwxr-xr-x
multipath
29.93
KB
-rwxr-xr-x
multipathd
113.98
KB
-rwxr-xr-x
nameif
14.07
KB
-rwxr-xr-x
nanddump
42.02
KB
-rwxr-xr-x
nandtest
14.01
KB
-rwxr-xr-x
nandwrite
42.01
KB
-rwxr-xr-x
netplan
798
B
-rwxr-xr-x
newusers
90.26
KB
-rwxr-xr-x
nfnl_osf
14.09
KB
-rwxr-xr-x
nftl_format
14.02
KB
-rwxr-xr-x
nftldump
9.95
KB
-rwxr-xr-x
nologin
6.08
KB
-rwxr-xr-x
ntfsclone
54.05
KB
-rwxr-xr-x
ntfscp
38.04
KB
-rwxr-xr-x
ntfslabel
30.04
KB
-rwxr-xr-x
ntfsresize
70.05
KB
-rwxr-xr-x
ntfsundelete
50.04
KB
-rwxr-xr-x
on_ac_power
2.18
KB
-rwxr-xr-x
overlayroot-chroot
2.45
KB
-rwxr-xr-x
pam-auth-update
19.86
KB
-rwxr-xr-x
pam_extrausers_chkpwd
37.94
KB
-rwxr-sr-x
pam_extrausers_update
33.94
KB
-rwxr-xr-x
pam_getenv
2.82
KB
-rwxr-xr-x
pam_tally
13.95
KB
-rwxr-xr-x
pam_tally2
13.95
KB
-rwxr-xr-x
pam_timestamp_check
9.93
KB
-rwxr-xr-x
paperconfig
4.07
KB
-rwxr-xr-x
parted
78.2
KB
-rwxr-xr-x
partprobe
14.01
KB
-rwxr-xr-x
pdata_tools
1.2
MB
-rwxr-xr-x
phpdismod
7.11
KB
-rwxr-xr-x
phpenmod
7.11
KB
-rwxr-xr-x
phpquery
6.24
KB
-rwxr-xr-x
pivot_root
10.01
KB
-rwxr-xr-x
plipconfig
9.93
KB
-rwxr-xr-x
plymouthd
122.22
KB
-rwxr-xr-x
popcon-largest-unused
543
B
-rwxr-xr-x
popularity-contest
5.23
KB
-rwxr-xr-x
poweroff
944.84
KB
-rwxr-xr-x
pvchange
2.74
MB
-rwxr-xr-x
pvck
2.74
MB
-rwxr-xr-x
pvcreate
2.74
MB
-rwxr-xr-x
pvdisplay
2.74
MB
-rwxr-xr-x
pvmove
2.74
MB
-rwxr-xr-x
pvremove
2.74
MB
-rwxr-xr-x
pvresize
2.74
MB
-rwxr-xr-x
pvs
2.74
MB
-rwxr-xr-x
pvscan
2.74
MB
-rwxr-xr-x
pwck
53.82
KB
-rwxr-xr-x
pwconv
49.69
KB
-rwxr-xr-x
pwunconv
49.69
KB
-rwxr-xr-x
rarp
36.16
KB
-rwxr-xr-x
raw
14.01
KB
-rwxr-xr-x
readprofile
18.04
KB
-rwxr-xr-x
reboot
944.84
KB
-rwxr-xr-x
recv_image
21.93
KB
-rwxr-xr-x
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Code Editor : iptables-apply
#!/bin/bash # iptables-apply -- a safer way to update iptables remotely # # Usage: # iptables-apply [-hV] [-t timeout] [-w savefile] {[rulesfile]|-c [runcmd]} # # Versions: # * 1.0 Copyright 2006 Martin F. Krafft <madduck@madduck.net> # Original version # * 1.1 Copyright 2010 GW <gw.2010@tnode.com or http://gw.tnode.com/> # Added parameter -c (run command) # Added parameter -w (save successfully applied rules to file) # Major code cleanup # # Released under the terms of the Artistic Licence 2.0 # set -eu PROGNAME="${0##*/}" VERSION=1.1 ### Default settings DEF_TIMEOUT=10 MODE=0 # apply rulesfile mode # MODE=1 # run command mode case "$PROGNAME" in (*6*) SAVE=ip6tables-save RESTORE=ip6tables-restore DEF_RULESFILE="/etc/network/ip6tables.up.rules" DEF_SAVEFILE="$DEF_RULESFILE" DEF_RUNCMD="/etc/network/ip6tables.up.run" ;; (*) SAVE=iptables-save RESTORE=iptables-restore DEF_RULESFILE="/etc/network/iptables.up.rules" DEF_SAVEFILE="$DEF_RULESFILE" DEF_RUNCMD="/etc/network/iptables.up.run" ;; esac ### Functions function blurb() { cat <<-__EOF__ $PROGNAME $VERSION -- a safer way to update iptables remotely __EOF__ } function copyright() { cat <<-__EOF__ $PROGNAME has been published under the terms of the Artistic Licence 2.0. Original version - Copyright 2006 Martin F. Krafft <madduck@madduck.net>. Version 1.1 - Copyright 2010 GW <gw.2010@tnode.com or http://gw.tnode.com/>. __EOF__ } function about() { blurb echo copyright } function usage() { blurb echo cat <<-__EOF__ Usage: $PROGNAME [-hV] [-t timeout] [-w savefile] {[rulesfile]|-c [runcmd]} The script will try to apply a new rulesfile (as output by iptables-save, read by iptables-restore) or run a command to configure iptables and then prompt the user whether the changes are okay. If the new iptables rules cut the existing connection, the user will not be able to answer affirmatively. In this case, the script rolls back to the previous working iptables rules after the timeout expires. Successfully applied rules can also be written to savefile and later used to roll back to this state. This can be used to implement a store last good configuration mechanism when experimenting with an iptables setup script: $PROGNAME -w $DEF_SAVEFILE -c $DEF_RUNCMD When called as ip6tables-apply, the script will use ip6tables-save/-restore and IPv6 default values instead. Default value for rulesfile is '$DEF_RULESFILE'. Options: -t seconds, --timeout seconds Specify the timeout in seconds (default: $DEF_TIMEOUT). -w savefile, --write savefile Specify the savefile where successfully applied rules will be written to (default if empty string is given: $DEF_SAVEFILE). -c runcmd, --command runcmd Run command runcmd to configure iptables instead of applying a rulesfile (default: $DEF_RUNCMD). -h, --help Display this help text. -V, --version Display version information. __EOF__ } function checkcommands() { for cmd in "${COMMANDS[@]}"; do if ! command -v "$cmd" >/dev/null; then echo "Error: needed command not found: $cmd" >&2 exit 127 fi done } function revertrules() { echo -n "Reverting to old iptables rules... " "$RESTORE" <"$TMPFILE" echo "done." } ### Parsing and checking parameters TIMEOUT="$DEF_TIMEOUT" SAVEFILE="" SHORTOPTS="t:w:chV"; LONGOPTS="timeout:,write:,command,help,version"; OPTS=$(getopt -s bash -o "$SHORTOPTS" -l "$LONGOPTS" -n "$PROGNAME" -- "$@") || exit $? for opt in $OPTS; do case "$opt" in (-*) unset OPT_STATE ;; (*) case "${OPT_STATE:-}" in (SET_TIMEOUT) eval TIMEOUT=$opt;; (SET_SAVEFILE) eval SAVEFILE=$opt [ -z "$SAVEFILE" ] && SAVEFILE="$DEF_SAVEFILE" ;; esac ;; esac case "$opt" in (-t|--timeout) OPT_STATE="SET_TIMEOUT";; (-w|--write) OPT_STATE="SET_SAVEFILE";; (-c|--command) MODE=1;; (-h|--help) usage >&2; exit 0;; (-V|--version) about >&2; exit 0;; (--) break;; esac shift done # Validate parameters if [ "$TIMEOUT" -ge 0 ] 2>/dev/null; then TIMEOUT=$(($TIMEOUT)) else echo "Error: timeout must be a positive number" >&2 exit 1 fi if [ -n "$SAVEFILE" -a -e "$SAVEFILE" -a ! -w "$SAVEFILE" ]; then echo "Error: savefile not writable: $SAVEFILE" >&2 exit 8 fi case "$MODE" in (1) # Treat parameter as runcmd (run command mode) RUNCMD="${1:-$DEF_RUNCMD}" if [ ! -x "$RUNCMD" ]; then echo "Error: runcmd not executable: $RUNCMD" >&2 exit 6 fi # Needed commands COMMANDS=(mktemp "$SAVE" "$RESTORE" "$RUNCMD") checkcommands ;; (*) # Treat parameter as rulesfile (apply rulesfile mode) RULESFILE="${1:-$DEF_RULESFILE}"; if [ ! -r "$RULESFILE" ]; then echo "Error: rulesfile not readable: $RULESFILE" >&2 exit 2 fi # Needed commands COMMANDS=(mktemp "$SAVE" "$RESTORE") checkcommands ;; esac ### Begin work # Store old iptables rules to temporary file TMPFILE=`mktemp /tmp/$PROGNAME-XXXXXXXX` trap "rm -f $TMPFILE" EXIT HUP INT QUIT ILL TRAP ABRT BUS \ FPE USR1 SEGV USR2 PIPE ALRM TERM if ! "$SAVE" >"$TMPFILE"; then # An error occured if ! grep -q ipt /proc/modules 2>/dev/null; then echo "Error: iptables support lacking from the kernel" >&2 exit 3 else echo "Error: unknown error saving old iptables rules: $TMPFILE" >&2 exit 4 fi fi # Legacy to stop the fail2ban daemon if present [ -x /etc/init.d/fail2ban ] && /etc/init.d/fail2ban stop # Configure iptables case "$MODE" in (1) # Run command in background and kill it if it times out echo -n "Running command '$RUNCMD'... " "$RUNCMD" & CMD_PID=$! ( sleep "$TIMEOUT"; kill "$CMD_PID" 2>/dev/null; exit 0 ) & CMDTIMEOUT_PID=$! if ! wait "$CMD_PID"; then echo "failed." echo "Error: unknown error running command: $RUNCMD" >&2 revertrules exit 7 else echo "done." fi ;; (*) # Apply iptables rulesfile echo -n "Applying new iptables rules from '$RULESFILE'... " if ! "$RESTORE" <"$RULESFILE"; then echo "failed." echo "Error: unknown error applying new iptables rules: $RULESFILE" >&2 revertrules exit 5 else echo "done." fi ;; esac # Prompt user for confirmation echo -n "Can you establish NEW connections to the machine? (y/N) " read -n1 -t "$TIMEOUT" ret 2>&1 || : case "${ret:-}" in (y*|Y*) # Success echo if [ ! -z "$SAVEFILE" ]; then # Write successfully applied rules to the savefile echo "Writing successfully applied rules to '$SAVEFILE'..." if ! "$SAVE" >"$SAVEFILE"; then echo "Error: unknown error writing successfully applied rules: $SAVEFILE" >&2 exit 9 fi fi echo "... then my job is done. See you next time." ;; (*) # Failed echo if [ -z "${ret:-}" ]; then echo "Timeout! Something happened (or did not). Better play it safe..." else echo "No affirmative response! Better play it safe..." fi revertrules exit 255 ;; esac # Legacy to start the fail2ban daemon again [ -x /etc/init.d/fail2ban ] && /etc/init.d/fail2ban start exit 0 # vim:noet:sw=8
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