RSR

lightdm과 같은 윈도 매니저 쓸때는 전원 컨트롤이 잘 되었으나 콘솔모드에서 뚜껑을 덮으면 연결된 네트워크가 끊어지는 문제 발생

추적결과 대충 아래의 메시지 발견

systemd-logind[12221]: Lid closed.
systemd-logind[12221]: Suspending...
NetworkManager[878]: <info>  [1572522339.0077] manager: sleep: sleep requested (sleeping: no  enabled: yes)
NetworkManager[878]: <info>  [1572522339.0078] device (wlp4s0): state change: unavailable -> unmanaged (reason 'sleeping', sys-iface-state: 'managed')
NetworkManager[878]: <info>  [1572522339.0084] manager: NetworkManager state is now ASLEEP
NetworkManager[878]: <info>  [1572522339.0088] device (enp2s0): state change: activated -> deactivating (reason 'sleeping', sys-iface-state: 'managed')
dbus-daemon[835]: [system] Activating via systemd: service name='org.freedesktop.nm_dispatcher' unit='dbus-org.freedesktop.nm-dispatcher.service' requested by ':1
NetworkManager[878]: <info>  [1572522339.0280] device (enp2s0): state change: deactivating -> disconnected (reason 'sleeping', sys-iface-state: 'managed')
vmnet-natd[11087]: RTM_NEWLINK: name:enp2s0 index:2 flags:0x00011043
vmnetBridge[11065]: RTM_NEWLINK: name:enp2s0 index:2 flags:0x00011043
systemd[1]: Starting Network Manager Script Dispatcher Service...
dbus-daemon[835]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'
systemd[1]: Started Network Manager Script Dispatcher Service.
nm-dispatcher[23024]: req:1 'connectivity-change': new request (1 scripts)
nm-dispatcher[23024]: req:1 'connectivity-change': start running ordered scripts...
NetworkManager[878]: <info>  [1572522339.0930] dhcp4 (enp2s0): canceled DHCP transaction, DHCP client pid 22932
NetworkManager[878]: <info>  [1572522339.0930] dhcp4 (enp2s0): state changed bound -> done
vmnet-natd[11087]: RTM_DELROUTE: index:2
vmnetBridge[11065]: RTM_DELROUTE: index:2
vmnet-natd[11087]: RTM_DELADDR: index:2, addr:192.168.1.32
NetworkManager[878]: <warn>  [1572522339.0959] dns-mgr: update-dns: plugin unbound update failed
NetworkManager[878]: <info>  [1572522339.1035] device (enp2s0): state change: disconnected -> unmanaged (reason 'sleeping', sys-iface-state: 'managed')
nm-dispatcher[23024]: req:2 'down' [enp2s0]: new request (1 scripts)
nm-dispatcher[23024]: req:2 'down' [enp2s0]: start running ordered scripts...
kernel: r8169 0000:02:00.0 enp2s0: Link is Down
vmnetBridge[11065]: RTM_NEWLINK: name:enp2s0 index:2 flags:0x00001002
vmnet-natd[11087]: RTM_NEWLINK: name:enp2s0 index:2 flags:0x00001002
vmnetBridge[11065]: Removing interface enp2s0 index:2
vmnetBridge[11065]: Stopped bridge enp2s0 to virtual network 0.
kernel: userif-3: sent link down event.
kernel: userif-3: sent link up event.

systemd-logind[12221]: Lid closed.

systemd-logind[12221]: Suspending...

NetworkManager[878]: <info> [1572522339.0077] manager: sleep: sleep requested (sleeping: no enabled: yes)

NetworkManager[878]: <info> [1572522339.0078] device (wlp4s0): state change: unavailable -> unmanaged (reason 'sleeping', sys-iface-state: 'managed')

NetworkManager[878]: <info> [1572522339.0084] manager: NetworkManager state is now ASLEEP

NetworkManager[878]: <info> [1572522339.0088] device (enp2s0): state change: activated -> deactivating (reason 'sleeping', sys-iface-state: 'managed')

dbus-daemon[835]: [system] Activating via systemd: service name='org.freedesktop.nm_dispatcher' unit='dbus-org.freedesktop.nm-dispatcher.service' requested by ':1

NetworkManager[878]: <info> [1572522339.0280] device (enp2s0): state change: deactivating -> disconnected (reason 'sleeping', sys-iface-state: 'managed')

vmnet-natd[11087]: RTM_NEWLINK: name:enp2s0 index:2 flags:0x00011043

vmnetBridge[11065]: RTM_NEWLINK: name:enp2s0 index:2 flags:0x00011043

systemd[1]: Starting Network Manager Script Dispatcher Service...

dbus-daemon[835]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'

systemd[1]: Started Network Manager Script Dispatcher Service.

nm-dispatcher[23024]: req:1 'connectivity-change': new request (1 scripts)

nm-dispatcher[23024]: req:1 'connectivity-change': start running ordered scripts...

NetworkManager[878]: <info> [1572522339.0930] dhcp4 (enp2s0): canceled DHCP transaction, DHCP client pid 22932

NetworkManager[878]: <info> [1572522339.0930] dhcp4 (enp2s0): state changed bound -> done

vmnet-natd[11087]: RTM_DELROUTE: index:2

vmnetBridge[11065]: RTM_DELROUTE: index:2

vmnet-natd[11087]: RTM_DELADDR: index:2, addr:192.168.1.32

NetworkManager[878]: <warn> [1572522339.0959] dns-mgr: update-dns: plugin unbound update failed

NetworkManager[878]: <info> [1572522339.1035] device (enp2s0): state change: disconnected -> unmanaged (reason 'sleeping', sys-iface-state: 'managed')

nm-dispatcher[23024]: req:2 'down' [enp2s0]: new request (1 scripts)

nm-dispatcher[23024]: req:2 'down' [enp2s0]: start running ordered scripts...

kernel: r8169 0000:02:00.0 enp2s0: Link is Down

vmnetBridge[11065]: RTM_NEWLINK: name:enp2s0 index:2 flags:0x00001002

vmnet-natd[11087]: RTM_NEWLINK: name:enp2s0 index:2 flags:0x00001002

vmnetBridge[11065]: Removing interface enp2s0 index:2

vmnetBridge[11065]: Stopped bridge enp2s0 to virtual network 0.

kernel: userif-3: sent link down event.

kernel: userif-3: sent link up event.

"/etc/systemd/logind.conf" 파일의

HandleLidSwitch=ignore
HandleLidSwitchDocked=ignore

부분 수정 후 재부팅

systemd-logind[968]: Lid closed.
systemd-logind[968]: Lid opened.
systemd-logind[968]: Lid closed.

systemd-logind[968]: Lid closed.

systemd-logind[968]: Lid opened.

systemd-logind[968]: Lid closed.

반응없음을 확인

일반적으로 공유기에서 특정 ASCII를 WPA passphrase로 사용하지 못하게 막고있다.
이런경우

과 같이 필터링을 당하게 되며 스크립트단에서 넘긴다 하더라도 공격시도로 인해 세션이 끊어지게 된다.
ASCII 외에 HEX 옵션이 있는경우 SSID와 WPA passphrase를 이용하여 키를 계산해서 HEX값으로 넣어줄 수 있다.
http://jorisvr.nl/wpapsk.html 와 같은 웹베이스 계산기를 사용하여도 되지만 보안상 찝찝하다면 아래의 파이썬 코드를 실행하면 된다.

from pbkdf2 import PBKDF2
ssid = 'home' 
phrase = 'qwerty123'
print "SSID: "+ssid
print "Pass phrase: "+phrase
print "Pairwise Master Key: " + PBKDF2(phrase, ssid, 4096).read(32).encode("hex")

from pbkdf2 import PBKDF2

ssid = 'home'

phrase = 'qwerty123'

print "SSID: "+ssid

print "Pass phrase: "+phrase

print "Pairwise Master Key: " + PBKDF2(phrase, ssid, 4096).read(32).encode("hex")

파이썬 코드는 https://medium.com/@billatnapier/wpa-2-hash-cracking-3098befd1300 에서 참조하였다.

실행시 나오는 Pairwise Master Key항목을 이용하여 WPA2 세션을 진행할 수 있다.

Ubuntu Laptop disable going to sleep when lid closed

Office 365, Outlook 로그인 이슈 해결

밥 로스

WAP2 KEY 변환

Flac Wav파일 CUE로 분할 및 태그 정리

.cue로 .wav 분할하기 (flac 가능, 결과는 wav로..)

분할된 wav를 다시 flac 압축

CUE를 기반으로 Tag 생성 (cuetools 필요)

TAG를 기반으로 Filename 변경

ref.

*.cue로 *.wav 분할하기 (flac 가능, 결과는 wav로..)

분할된 wav를 다시 flac 압축

CUE를 기반으로 Tag 생성 (cuetools 필요)

TAG를 기반으로 Filename 변경

ref.

.cue로 .wav 분할하기 (flac 가능, 결과는 wav로..)