Setup - Kali Linux
Contents
Create Install Setup
Create a bootable USB from Kali linux
https://www.kali.org/docs/usb/kali-linux-live-usb-install/
Use default partition (single partition and swap around same as memory)
GUI install works fine. Default options
Account Setup
Create a local account that does not match in name the SOE LDAP. E.g: jrenau vs renau
Basic Setup
SSH Server (not for laptop, just desktop and servers)
apt-get install openssh-server systemctl enable ssh.service systemctl start ssh.service
Get the time in sync with NTP
systemctl enable ntp.service systemctl start ntp.service
If you have several ethernets (private network for server)
# /etc/network/interfaces iface eth1 inet static address 192.168.3.XXX # mada0 xxx =100 , mada1 xxx==101 netmask 255.255.255.0
Restart network if needed
systemctl restart networking
Firewall Setup
Setup the firewall:
apt-get install ufw ufw default deny ufw reject auth ufw limit ssh/tcp ufw logging off
The next line is only needed the first time you install the package.
ufw enable
Follow it by enabling ufw with systemctl.
systemctl enable ufw.service
Finally, query the rules being applied via the status command.
ufw status
Determinism for QEMU/ESESC/LiveHD/....
mmap problem for qemu, enable perf monitoring for everyone, no randomization (determinism)
echo "vm.mmap_min_addr = 4096" >>/etc/sysctl.d/10-masc.conf echo "fs.inotify.max_user_watches = 65535" >>/etc/sysctl.d/10-masc.conf echo "kernel.randomize_va_space = 0" >>/etc/sysctl.d/10-masc.conf echo "kernel.perf_event_paranoid = -1" >>/etc/sysctl.d/10-masc.conf
restart sysctl or wait for reboot
systemctl restart systemd-sysctl.service
Packages
Get Atom/Bazel repos
Get Atom package
curl -L https://packagecloud.io/AtomEditor/atom/gpgkey | apt-key add - echo "deb [arch=amd64] https://packagecloud.io/AtomEditor/atom/any/ any main" > /etc/apt/sources.list.d/atom.list apt update apt install atom
Get Bazel package
curl https://bazel.build/bazel-release.pub.gpg | sudo apt-key add - echo "deb [arch=amd64] https://storage.googleapis.com/bazel-apt stable jdk1.8" | sudo tee /etc/apt/sources.list.d/bazel.list apt update apt install bazel
Get Basic Packages
Go to a Kali Linux machine (mada4?), dump the packages installed
dpkg --get-selections | grep -v deinstall > installed_packages.txt
Go to your new machine, and install the missing packages
cut -f 1 installed_packages.txt | xargs apt-get install -y
NOTE: There may be some conflicts with the older kali machine. My suggestion is to upgrade to the latest version before. At the end, there may be also issues for packages like atom
- vi /etc/apt/sources.list.d/buster-backports.list
deb http://deb.debian.org/debian buster-backports main contrib deb-src http://deb.debian.org/debian buster-backports main contrib
LDAP
ldap directory access
Copy the cacerts from SOE (firedance in example)
scp -r renau@firedance:/etc/openldap/cacerts /etc/ldap/ scp -r renau@firedance:/etc/openldap/ldap.conf /etc/ldap/ldap.conf.soe sed -s/openldap/ldap/g /etc/ldap/ldap.conf.soe >/etc/ldap/ldap.conf
Now you should be able to execute the following command.
ldapsearch -x LLL
pam
Use default options of this two packages
apt install libnss-ldap apt-get install nss-updatedb
Edit /etc/nsswitch.conf to have ldap
passwd: files systemd ldap group: files systemd ldap shadow: files ldap
Update the pam_ldap.conf
cp /etc/ldap/ldap.conf /etc/pam_ldap.conf
Get the nss_ldap
scp mada0:/etc/*nss_ldap.conf /etc/libnss_ldap.conf
After this, you should have a getent
getent passwd | grep -i renau
security
Restrict access only to masc/vlsi/vama groups Add to /etc/security/access.conf
+ : root : ALL + : (masc) : ALL + : (vlsi) : ALL + : (vama) : ALL -:ALL :ALL
Server Disk
https://www.tecmint.com/create-raid-5-in-linux/
Get mdad
apt install mdadm
Make sure that the disks have GPT partition
parted /dev/XXX (parted) mklabel gpt (parted) quit
Create a single partition for full disk type RAID (29)
fdisk /dev/XXX
Sample sequence
fdisk /dev/disk/by-id/nvme-Micron_9300_MTFDHAL6T4TDR_1943249XXXX Command (m for help): p Disk /dev/disk/by-id/nvme-Micron_9300_MTFDHAL6T4TDR_194324955FD6: 5.84 TiB, 6401252745216 bytes, 12502446768 sectors Disk model: Micron_9300_MTFDHAL6T4TDR Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: gpt Disk identifier: A80D3A07-8B7A-47F6-96AC-D470B50E5BDE
Command (m for help): n
Partition number (1-128, default 1):
First sector (34-12502446734, default 2048):
Last sector, +/-sectors or +/-size{K,M,G,T,P} (2048-12502446734, default 12502446734):
Created a new partition 1 of type 'Linux filesystem' and of size 5.8 TiB.
Command (m for help): t Selected partition 1 Partition type (type L to list all types): 29 Changed type of partition 'Linux filesystem' to 'Linux RAID'.
Command (m for help): w The partition table has been altered. Calling ioctl() to re-read partition table. Syncing disks.
Create the /dev/md0
mdadm --create /dev/md0 --level=5 --raid-devices=7 /dev/disk/by-id/nvme-Micron_9300_MTFDHAL6T4TDR_1943249?????
Wait (or not) until the RAID is created
watch -n1 cat /proc/mdstat
Check the RAID status
mdadm --detail /dev/md0
Install BTRFS package
apt install btrfs-progs
Format disk
mkfs.btrfs /dev/md0
Create a module (full disk)
btrfs subvolume create /mnt/full
Create a snapshot
btrfs subvolume snapshot /mnt/full /mnt/snap-1
Delete a snapshot
btrfs subvolume delete /mnt/snap-1
List volumes/snapshots
btrfs subvolume list /mnt/
ZFS (server)
WARNING DO NOT INSTALL THIS. It has issues upgrading kernel. Kept for documentation reasons
This explains the ZFS setup for large filesystem server (not for desktop)
Get the latest kernel and headers
apt update apt install linux-headers-`uname -r`
Set backports for ZFS
# vi /etc/apt/preferences.d/90_zfs Package: libnvpair1linux libuutil1linux libzfs2linux libzpool2linux spl-dkms zfs-dkms zfs-test zfsutils-linux zfsutils-linux-dev zfs-zed Pin: release n=buster-backports Pin-Priority: 990
Install zfs packages
apt install zfsutils-linux zfs-dkms spl-dkms
