페이지 이력

목차

Network

Default Network

코드 블럭

linenumbers	true

# brctl show

코드 블럭

root@pnetlab:~# ps auxf | grep -v '\[' | awk '{ print substr($0, 1, 9) substr($0, 65) }'
USER      COMMAND
root      /sbin/init
root      /lib/systemd/systemd-journald
rootSTP 
bridge name  bridge id   /sbin/lvmetad -f
root        /lib/systemd/systemd-udevd
systemd+  /lib/systemd/systemd-timesyncd
systemd+  /lib/systemd/systemd-networkd
systemd+  /lib/systemd/systemd-resolved
rootenabled  interfaces
docker0      8000.0242730dda4d  no
pnet0      /usr/sbin/irqbalance --foreground
root  8000.566f4bf80108  no   /usr/lib/accountsservice/accounts-daemon
message+  /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation --syslog-only
root    eth0
pnet1        8000.000000000000  no
pnet2      /lib/systemd/systemd-logind
root  8000.000000000000  no
pnet3  php /opt/unetlab/scripts/cpulimit_daemon.php > /opt/unetlab/data/Logs/cpulimit.log 2>&1
root       8000.000000000000  no
pnet4     /usr/bin/python3 /usr/bin/networkd-dispatcher --run-startup-triggers
daemon    /usr/sbin/atd -f
root 8000.000000000000  no
pnet5        /usr/bin/lxcfs /var/lib/lxcfs/
root8000.000000000000  no
pnet6         /usr/lib/policykit-1/polkitd --no-debug
root8000.000000000000  no
pnet7       ovsdb-server /etc/openvswitch/conf.db
   8000.000000000000  no
pnet8        8000.000000000000    -vconsole:emer
no
pnet9        8000.000000000000   no
pnet_nat   -vsyslog:err
  8000.000000000000  no

Network example Labs on running

코드 블럭

linenumbers	true

# brctl show
        -vfile:info
              --remote=punix:/var/run/openvswitch/db.sock
          STP 
bridge name  --private-key=db:Open_vSwitch,SSL,private_key
 bridge id          enabled   --certificate=db:Open_vSwitch,SSL,certificate
interfaces
docker0      8000.0242730dda4d  no
pnet0      --bootstrap-ca-cert=db:Open_vSwitch,SSL,ca_cert
  8000.566f4bf80108  no       eth0
pnet1   --no-chdir
     8000.000000000000  no
...
pnet_nat       --log-file=/var/log/openvswitch/ovsdb-server.log
8000.000000000000  no
vnet1_1      8000.5e89b0f3aaca  no       --pidfile=/var/run/openvswitch/ovsdb-server.pidvunl11_35
              --detach
root      ovs-vswitchd unix:/var/run/openvswitch/db.sock
              -vconsole:emer
      vunl12_35
vnet1_10     8000.be1960846bc5  no    -vsyslog:err
   vunl11_50
                       -vfile:info
                  --mlockall
vunl13_50
vnet1_11     8000.9e3475a9c50e  no       --no-chdir
vunl12_34
               --log-file=/var/log/openvswitch/ovs-vswitchd.log
              --pidfile=/var/run/openvswitch/ovs-vswitchd.pid
            vunl14_34
vnet1_12      --detach
root 8000.226a4f0e634b  no     /usr/bin/python3 /usr/share/unattended-upgrades/unattended-upgrade-shutdown --wait-for-signal
root vunl12_50
           /bin/bash /opt/unetlab/html/store/app/Console/Commands/harddisk_alert
root         \_ sleep 90
root      /usr/local/sbin/guacd -p /var/run/guacd.pid
root      /usr/bin/containerd
root      /usr/sbin/qemu-ga --daemonize -m virtio-serial -p /dev/virtio-ports/org.qemu.guest_agent.0
rootvunl14_50
vnet1_13     8000.125d89294c8e  no       vunl10_16
            /usr/bin/ovs-testcontroller
              --detach
              --pidfile=/var/run/openvswitch/ovs-testcontroller.pid pssl:
 vunl11_0
               --private-key=/etc/openvswitch-testcontroller/privkey.pem
                --certificate=/etc/openvswitch-testcontroller/cert.pem
          vunl1_16
    --ca-cert=/etc/openvswitch-testcontroller/cacert.pem
root      /sbin/agetty -o -p -- \u --noclear tty1 linux
tomcat8   /usr/lib/jvm/default-java/bin/java
              -Djava.util.logging.config.file=/var/lib/tomcat8/conf/logging.properties
       vunl2_16
       -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
              -Djava.awt.headless=true
              -XX:+UseConcMarkSweepGC
       vunl3_16
           -Djdk.tls.ephemeralDHKeySize=2048
                -Djava.protocol.handler.pkgs=org.apache.catalina.webresources
              -Dorg.apache.catalina.security.SecurityListener.UMASK=0027
vunl4_16
                     -Dignore.endorsed.dirs=
               -classpath /usr/share/tomcat8/bin/bootstrap.jar:/usr/share/tomcat8/bin/tomcat-juli.jar
       vunl5_16
            -Dcatalina.base=/var/lib/tomcat8
              -Dcatalina.home=/usr/share/tomcat8
              -Djava.io.tmpdir=/tmp/tomcat8-tomcat8-tmp org.apache.catalina.startup.Bootstrap start
uml-net   /usr/bin/uml_switch -unix /var/run/uml-utilities/uml_switch.ctl
root vunl6_16
...

Link Quality - tc

Image Added

코드 블럭

# brctl show
bridge name  bridge id        /usr/sbin/apache2 -k start
www-data   \_ /usr/sbin/apache2 -k start
www-data   \_ /usr/sbin/apache2 -k start
root STP enabled  interfaces
vnet1_1      8000.264711a044df  no          /bin/bash /opt/unetlab/html/store/app/Console/Commands/harddisk_limit
root vunl1_0
               \_ sleep 60
root      /bin/bash /opt/unetlab/html/store/app/Console/Commands/process_limit
root       \_ sleep 30
root      /lib/systemd/systemd --user
root     vunl2_0

# tc qdisc show
qdisc netem 8003: dev vunl1_0 root refcnt 2 limit 1000 delay 5.0ms  1.0ms loss 0.5% rate 10240Kbit
qdisc netem 8004: dev vunl2_0 root refcnt 2 limit 1000 delay 6.0ms  2.0ms loss 0.6% rate 20480Kbit

Process

Default Processes

코드 블럭

linenumbers	true

# ps auxf | grep -v '\[' | awk '{ print substr($0, 1, 9) substr($0, 65) }'
USER      COMMAND
root      /sbin/init
root      /lib/systemd/systemd-journald
root      /sbin/lvmetad -f
root      /lib/systemd/systemd-udevd
systemd+  /lib/systemd/systemd-timesyncd
systemd+  /lib/systemd/systemd-networkd
systemd+  /lib/systemd/systemd-resolved
root      /usr/sbin/irqbalance --foreground
root      /usr/lib/accountsservice/accounts-daemon
message+  /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation --syslog-only
root      /lib/systemd/systemd-logind
root      php /opt/unetlab/scripts/cpulimit_daemon.php > /opt/unetlab/data/Logs/cpulimit.log 2>&1
root      /usr/bin/python3 /usr/bin/networkd-dispatcher --run-startup-triggers
daemon    /usr/sbin/atd -f
root      /usr/bin/lxcfs /var/lib/lxcfs/
root      /usr/lib/policykit-1/polkitd --no-debug
root      ovsdb-server /etc/openvswitch/conf.db
              -vconsole:emer
              -vsyslog:err
              -vfile:info
 \_ (sd-pam)
unl1      /opt/unetlab/wrappers/iol_wrapper 
              -D 1 -S 1 -P 30001 -t R1 
              -F /opt/unetlab/tmp/1/1/i86bi_linux-adventerprisek9-ms.154-1.T_AntiGNS3.bin 
              -d 0 -e 1 -s 0 -- -n 1024 -q -m 1024 -c startup-config
unl1       \_ /opt/unetlab/wrappers/iol_wrapper ...
unl1           \_ sh -c LD_LIBRARY_PATH=/opt/unetlab/addons/iol/lib 
                      /opt/unetlab/tmp/1/1/i86bi_linux-adventerprisek9-ms.154-1.T_AntiGNS3.bin
                      -e 1 -s 0  -n 1024 -q -m 1024 -c startup-config 1
unl1               \_ /opt/unetlab/tmp/1/1/i86bi_linux-adventerprisek9-ms.154-1.T_AntiGNS3.bin ...
unl2      /opt/unetlab/wrappers/iol_wrapper 
              -D 2 -S 2 -P 30002 -t R2 
              -F /opt/unetlab/tmp/1/2/i86bi_linux-adventerprisek9-ms.154-1.T_AntiGNS3.bin 
              -d 0 -e 1 -s 0 -- -n 1024 -q -m 1024 -c startup-config
unl2       \_ /opt/unetlab/wrappers/iol_wrapper ...
unl2           \_ sh -c LD_LIBRARY_PATH=/opt/unetlab/addons/iol/lib 
  -remote=punix:/var/run/openvswitch/db.sock
                    /opt/unetlab/tmp/1/2/i86bi_linux-adventerprisek9-ms.154-1.T_AntiGNS3.binprivate-key=db:Open_vSwitch,SSL,private_key
                      -e 1 -s 0  -n 1024 -q -m 1024 -c startup-config 2
unl2  --certificate=db:Open_vSwitch,SSL,certificate
              --bootstrap-ca-cert=db:Open_vSwitch,SSL,ca_cert
             \_ /opt/unetlab/tmp/1/2/i86bi_linux-adventerprisek9-ms.154-1.T_AntiGNS3.bin ...
unl3no-chdir
              /opt/unetlab/wrappers/iol_wrapper --log-file=/var/log/openvswitch/ovsdb-server.log
              -D 3 -S 3 -P 30003 -t R3 
-pidfile=/var/run/openvswitch/ovsdb-server.pid
              --detach
root      ovs-Fvswitchd unix:/optvar/unetlabrun/tmp/1/3/i86bi_linux-adventerprisek9-ms.154-1.T_AntiGNS3.bin openvswitch/db.sock
              -dvconsole:emer
  0 -e 1 -s 0 -- -n 1024 -q -m 1024 -c startup-configvsyslog:err
unl3        \_ /opt/unetlab/wrappers/iol_wrapper ...
unl3    -vfile:info
       \_ sh -c LD_LIBRARY_PATH=/opt/unetlab/addons/iol/lib 
      --mlockall
                /opt/unetlab/tmp/1/3/i86bi_linux-adventerprisek9-ms.154-1.T_AntiGNS3.binno-chdir
                      -e 1 -s 0  -n 1024 -q -m 1024 -c startup-config 3
unl3--log-file=/var/log/openvswitch/ovs-vswitchd.log
              --pidfile=/var/run/openvswitch/ovs-vswitchd.pid
              --detach
root     \_ /optusr/unetlabbin/tmppython3 /1usr/3share/i86bi_linux-adventerprisek9-ms.154-1.T_AntiGNS3.bin ...
unl4unattended-upgrades/unattended-upgrade-shutdown --wait-for-signal
root      /bin/bash /opt/unetlab/wrappers/iol_wrapper 
/html/store/app/Console/Commands/harddisk_alert
root       \_ sleep 90
root     -D 4 /usr/local/sbin/guacd -S 4 -P 30004 -t R4 
p /var/run/guacd.pid
root      /usr/bin/containerd
root      /usr/sbin/qemu-ga --daemonize      -m virtio-serial -Fp /optdev/unetlab/tmp/1/4/i86bi_linux-adventerprisek9-ms.154-1.T_AntiGNS3.bin 
virtio-ports/org.qemu.guest_agent.0
root      /usr/bin/ovs-testcontroller
        -d 0 -e 1 -s 0 --detach
 -n 1024 -q -m 1024 -c startup-config
unl4       \_ /opt/unetlab/wrappers/iol_wrapper ...
unl4--pidfile=/var/run/openvswitch/ovs-testcontroller.pid pssl:
            \_ sh -c LD_LIBRARY_PATH-private-key=/optetc/unetlab/addons/iol/lib openvswitch-testcontroller/privkey.pem
                      /opt/unetlab/tmp/1/4/i86bi_linux-adventerprisek9-ms.154-1.T_AntiGNS3.bin--certificate=/etc/openvswitch-testcontroller/cert.pem
                      -e 1 -s 0  -n 1024 -q -m 1024 -c startup-config 4
unl4  --ca-cert=/etc/openvswitch-testcontroller/cacert.pem
root      /sbin/agetty -o -p -- \u --noclear tty1 linux
tomcat8   /usr/lib/jvm/default-java/bin/java
             \_ /opt/unetlab/tmp/1/4/i86bi_linux-adventerprisek9-ms.154-1.T_AntiGNS3.bin ...
root -Djava.util.logging.config.file=/var/lib/tomcat8/conf/logging.properties
       /opt/vpcsu/bin/vpcs -m 5 -N VPC -i 1 -p 30005 -e -d vunl5_0
rootDjava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
           \_ /opt/vpcsu/bin/vpcs -m 5 -N VPC -i 1 -p 30005 -e -d vunl5_0
root-Djava.awt.headless=true
             /opt/vpcsu/bin/vpcs -m 6 -N VPC1 -i 1 -p 30006 -e -d vunl6_0
root -XX:+UseConcMarkSweepGC
              -Djdk.tls.ephemeralDHKeySize=2048
  \_ /opt/vpcsu/bin/vpcs -m 6 -N VPC1 -i 1 -p 30006 -e -d vunl6_0
root            -Djava.protocol.handler.pkgs=org.apache.catalina.webresources
      /opt/vpcsu/bin/vpcs -m 7 -N VPC2 -i 1 -p 30007 -e -d vunl7_0
root -Dorg.apache.catalina.security.SecurityListener.UMASK=0027
       \_ /opt/vpcsu/bin/vpcs -m 7 -N VPC2 -i 1 -p 30007 -e -d vunl7_0
syslogDignore.endorsed.dirs=
        /usr/sbin/rsyslogd -n
root     -classpath /usr/sbin/cron -f
root       \_ /usr/sbin/CRON -f
rootshare/tomcat8/bin/bootstrap.jar:/usr/share/tomcat8/bin/tomcat-juli.jar
            \_ /bin/sh -c /usr/bin/php /opt/unetlab/html/store/artisan keepalive 2>&1
rootDcatalina.base=/var/lib/tomcat8
               \_ -Dcatalina.home=/usr/bin/php /opt/unetlab/html/store/artisan keepalive
mysqlshare/tomcat8
              /usr/sbin/mysqld --daemonize --pid-file=/run/mysqld/mysqld.pid-Djava.io.tmpdir=/tmp/tomcat8-tomcat8-tmp org.apache.catalina.startup.Bootstrap start
uml-net   /usr/bin/uml_switch -unix /var/run/uml-utilities/uml_switch.ctl
root      /usr/sbin/apache2 -k start
www-data   \_ /usr/sbin/apache2 -k start
www-data   \_ /usr/sbin/apache2 -k start
root      /bin/bash /opt/unetlab/html/store/app/Console/Commands/harddisk_limit
root       \_ sleep 60
root      /bin/bash /opt/unetlab/html/store/app/Console/Commands/process_limit
root       \_ sleep 30
root      /lib/systemd/systemd --user
root       \_ (sd-pam)
syslog    /usr/sbin/rsyslogd -n
root      /usr/sbin/cron -f
root       \_ /usr/sbin/CRON -f
root           \_ /bin/sh -c /usr/bin/php /opt/unetlab/html/store/artisan keepalive 2>&1
root               \_ /usr/bin/php /opt/unetlab/html/store/artisan keepalive
mysql     /usr/sbin/mysqld --daemonize --pid-file=/run/mysqld/mysqld.pid

Virtual Devices

Dynamips

코드 블럭

linenumbers	true

# ps auxf | grep -v '\[' | awk '{ print substr($0, 1, 9) substr($0, 65) }'
USER      COMMAND
unl1      /opt/unetlab/wrappers/iol_wrapper -D 1 -S 1 -P 30001 -t R1 
                  -F /opt/unetlab/tmp/1/1/i86bi_linux-adventerprisek9-ms.154-1.T_AntiGNS3.bin 
                  -d 0 -e 1 -s 0 -- -n 1024 -q -m 512 -c startup-config
unl1       \_ /opt/unetlab/wrappers/iol_wrapper ...
unl1           \_ sh -c LD_LIBRARY_PATH=/opt/unetlab/addons/iol/lib 
                          /opt/...GNS3.bin 
                          -e 1 -s 0 -n 1024 -q -m 512 -c startup-config 1
unl1               \_ /opt/...GNS3.bin ...

30001 은 Telnet 포트임. 웹 UI 에서 노드를 클릭하면, EVE-NG Client Pack이 로컬에서 다음 명령을 실행해 접속함

코드 블럭

linenumbers	true

telnet pnet.kreonet.net 30001

VPC

Virtual PC Simulator

코드 블럭

linenumbers	true

# ps auxf | grep -v '\[' | awk '{ print substr($0, 1, 9) substr($0, 65) }'
USER      COMMAND
root      /opt/vpcsu/bin/vpcs -m 15 -N VPC -i 1 -p 30015 -e -d vunl15_0
root       \_ /opt/vpcsu/bin/vpcs -m 15 -N VPC -i 1 -p 30015 -e -d vunl15_0

30015 는 Telnet 포트임

코드 블럭

linenumbers	true

# /opt/vpcsu/bin/vpcs -v
Welcome to Virtual PC Simulator, version 1.0 (0.8c)
Dedicated to Daling.
Build time: Dec 31 2016 01:22:17
Copyright (c) 2007-2015, Paul Meng (mirnshi@gmail.com)
All rights reserved.

Docker

코드 블럭

linenumbers	true

# docker ps -a
CONTAINER ID   IMAGE                          COMMAND            CREATED          STATUS          PORTS              NAMES
e671d651bc36   pnetlab/linux-desktop:latest   "/start.sh bash"   23 minutes ago   Up 23 minutes   80/tcp, 3389/tcp   docker16

root@pnetlab:~# ps auxf | grep -v '\[' | awk '{ print substr($0, 1, 9) substr($0, 65) }'
USER      COMMAND
root      /usr/bin/containerd-shim-runc-v2 -namespace moby -id e671d651bc36 -address /run/containerd/containerd.sock
root       \_ bash
root       |   \_ xrdp
root       |   \_ xrdp-sesman
root       \_ /bin/bash
root      sudo /opt/unetlab/wrappers/docker_wrapper -P 30016 -t Docker -p 16 -c /bin/bash
root       \_ ...
root           \_ ...
root               \_ sh -c ssh root@localhost -i /root/.ssh/id_rsa_dy -o StrictHostKeyChecking=no 
                              -tt 'export TERM=ansi&&docker -H=tcp://127.0.0.1:4243 exec -ti docker16 /bin/bash'
root                   \_ ...

docker_wrapper 는 웹 UI 에서 노드를 클릭하면 생성됨. docker의 interactive bash shell 을 telnet 30016 로 포워딩 함

QEMU

코드 블럭

linenumbers	true

# ps auxf | grep -v '\[' | awk '{ print substr($0, 1, 15) substr($0, 65) }'
USER       PID  COMMAND
root     12974  /opt/qemu-2.12.0/bin/qemu-system-x86_64
                        -device virtio-net-pci,netdev=net0,mac=50:4c:ef:00:11:00
                        -netdev tap,id=net0,ifname=vunl17_0,script=no
                        -vnc :24117
                        -chardev socket,id=monitor,path=/opt/unetlab/tmp/1/17/monitor.sock,server,nowait
                        -monitor chardev:monitor
                        -smp 2
                        -m 4096
                        -name Linux
                        -uuid 5b2e66a0-df69-43d0-b36f-c6a1362d289d
                        -drive file=virtioa.qcow2,if=virtio,bus=0,unit=0,cache=none
                        -machine type=pc,accel=kvm
                        -vga virtio
                        -usbdevice tablet
                        -boot order=cd

# netstat -anp | grep 12974
tcp    0    0 0.0.0.0:30017    0.0.0.0:*    LISTEN    12974/qemu-system-x

# ls -al /proc/12974/cwd
/proc/12974/cwd -> /opt/unetlab/tmp/1/17

# ls -al /opt/unetlab/tmp/1/17

30017는 VNC 포트임. QEMU 에뮬레이터에서 vnc 옵션이 :24117 인데, 이는 30017포트(5900+24117)로 해당 VM의 디스플레이를 VNC로 제공하겠다는 뜻임.

코드 블럭

linenumbers	true

# man qemu-system-x86_64
-vnc display
     host:d
        TCP connections will only be allowed from host on display d. 
        By convention the TCP port is 5900+ d. Optionally, host can be omitted 
        in which case the server will accept connections from any host.

Files

Dynamips 는 이미지의 링크를 tmp 폴더에 생성하여 부팅

QEMU 는 디스크의 복사본을 tmp 폴더에 생성하여 부팅

VPC, docker 는 tmp 폴더에 wrapper.txt 만 생성하고 부팅

코드 블럭

title	# tree /opt/unetlab/tmp
linenumbers	true

/opt/unetlab/tmp
└── 1
    ├── 1
    │   ├── iourc -> /opt/unetlab/addons/iol/bin/iourc
    │   ├── keepalive.pl -> /opt/unetlab/addons/iol/bin/keepalive.pl
    │   ├── L2-ADVENTERPRISEK9-M-15.2-IRON-20151103.bin -> /opt/unetlab/addons/iol/bin/L2-ADVENTERPRISEK9-M-15.2-IRON-20151103.bin
    │   ├── NETMAP
    │   ├── nvram_00001
    │   └── wrapper.txt
    ├── 21
    │   └── wrapper.txt
    ├── 31
    │   └── wrapper.txt
    └── 41
        ├── monitor.sock
        ├── virtioa.qcow2
        └── wrapper.txt

Code for launch emulators

코드 블럭

linenumbers	true

# ls -1 /opt/unetlab/wrappers/
docker_wrapper
dynamips_wrapper
iol_wrapper
iol_wrapper_telnet
nsenter
qemu_wrapper
qemu_wrapper_telnet
simple_forwarder
unl_profile
unl_wrapper

# cd /opt/unetlab/html/devices/
# grep -Hrn _wrapper *
docker/device_docker.php:339:  $cmd = 'sudo /opt/unetlab/wrappers/docker_wrapper -P ' ...
iol/device_iol.php:106:        $cmd = '/opt/unetlab/wrappers/iol_wrapper ';
qemu/device_qemu.php:597:      $cmd = '/opt/unetlab/wrappers/qemu_wrapper_telnet -P ' ...
qemu/device_qemu_wp.php:338:   $cmd = '/opt/unetlab/wrappers/qemu_wrapper -T ' ...

Code Protection

Encrypted by ionCube

코드 블럭

language	php
title	/opt/unetlab/html/api.php

<?php if(!extension_loaded('ionCube Loader'))... ?>
HR+cPwf3lkYwI0JFGrKgosEcR4IkYG9YmAJdBR+uMqvuG8fMuSMGbT47RAyjVFsriJV3hnBfI4Gs

코드 블럭
# grep -Hrn extension_loaded..ionCube /opt/unetlab/html \| wc -l 195

Unencrypted codes - https://github.com/pnetlab/pnetlab_main

DB

MySQL connection info

id: pnetlab
pw: pnetlab
db: pnetlab_db

https://github.com/pnetlab/pnetlab_main/blob/main/includes/functions.php

Important Tables

코드 블럭

linenumbers	true

# mysql -u pnetlab -p pnetlab_db
Enter password: pnetlab

Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 7019
Server version: 5.7.42-0ubuntu0.18.04.1 (Ubuntu)

mysql> select * from control;
+-------------------+---------------+
| control_name      | control_value |
+-------------------+---------------+
| ctrl_alive_key    | QjZxcn...     |
| ctrl_default_mode | online        |
| ctrl_offline_mode | 1             |
| ctrl_online_mode  | 1             |
| ctrl_version      | 4.2.10        |
+-------------------+---------------+

mysql> SELECT * FROM users;
+-----+-------------------------+---------+-------------+------------+----------+---------+----------+------+-------------------------------+-------------+-------+---------+-------------+------+---------+-------------+
| pod | username                | cookie  | email       | expiration | password | session | ip       | role | folder                        | lab_session | html5 | license | online_time | note | offline | user_status |
+-----+-------------------------+---------+-------------+------------+----------+---------+----------+------+-------------------------------+-------------+-------+---------+-------------+------+---------+-------------+
|   1 | John Doe_online_account | 89..... | john@ex.com |         -1 | ........ | ....... | 10.0.0.5 | 0    | /Your labs from PNETLab Store |        NULL |     1 | Um..... |  1723433643 | NULL |       0 |           1 |
|   2 | admin                   | NULL    | NULL        |         -1 | ........ |       N | NULL     | 0    | NULL                          |        NULL |  NULL | NULL    |  1723433636 | NULL |       1 |           1 |
+-----+-------------------------+---------+-------------+------------+----------+---------+----------+------+-------------------------------+-------------+-------+---------+-------------+------+---------+-------------+

Kernel Patch

장비를 연결하는 것을 리눅스 브릿지를 통해 구현함

리눅스 브릿지의 기본 동작을 에뮬레이션 상황에 맞게 변경

https://github.com/dainok/unetlab/blob/master/patch/linux-lts-utopic-3.16.0.patch

https://github.com/dainok/unetlab-kernel/blob/master/patches/transparent-bridge.patch

페이지 트리

버전 비교

이전 버전 1

새 버전 현재

키

Network

Default Network

Network example Labs on running

Link Quality - tc

Process

Default Processes

Virtual Devices

Dynamips

VPC

Docker

QEMU

Files

Code for launch emulators

Code Protection

DB

Kernel Patch