diff options
Diffstat (limited to '.trash/3 resources/linux/networking')
-rw-r--r-- | .trash/3 resources/linux/networking/dhcp.md | 4 | ||||
-rw-r--r-- | .trash/3 resources/linux/networking/ip-masquerade-nat.md | 14 | ||||
-rw-r--r-- | .trash/3 resources/linux/networking/nbp.md | 3 | ||||
-rw-r--r-- | .trash/3 resources/linux/networking/pxe-boot.md | 15 | ||||
-rw-r--r-- | .trash/3 resources/linux/networking/udp.md | 0 |
5 files changed, 36 insertions, 0 deletions
diff --git a/.trash/3 resources/linux/networking/dhcp.md b/.trash/3 resources/linux/networking/dhcp.md new file mode 100644 index 0000000..e426d6f --- /dev/null +++ b/.trash/3 resources/linux/networking/dhcp.md @@ -0,0 +1,4 @@ +Dynamic Host Configuration Protocol +Allows hosts dynamically receive an IP address. + +[[TODO]] learn exactly how it works
\ No newline at end of file diff --git a/.trash/3 resources/linux/networking/ip-masquerade-nat.md b/.trash/3 resources/linux/networking/ip-masquerade-nat.md new file mode 100644 index 0000000..8b722f4 --- /dev/null +++ b/.trash/3 resources/linux/networking/ip-masquerade-nat.md @@ -0,0 +1,14 @@ +A function in the kernel that allows guests with internal/private IPs to access the internet by using the hosts' public IP similar to 1 to many NAT. + +Differences with Proxy, IP Masq, NAT: + +**Proxy** +Requires special configuration on internal client side. Can be used for caching. + +**IP Masq** +A form of NAT used primarily in Linux devices. Translates IP address and uses the connection tracking table and ports to map responses back to the internal connection. + +**NAT** +Has different types with different use-cases. +Static NAT: 1-1 mapping of pub/private IP. Dynamic NAT: pool of pub ips to dynamically map private IPs to based on availability. +PAT (Port): similar to IP Masq; 1-many using ports.
\ No newline at end of file diff --git a/.trash/3 resources/linux/networking/nbp.md b/.trash/3 resources/linux/networking/nbp.md new file mode 100644 index 0000000..19676ea --- /dev/null +++ b/.trash/3 resources/linux/networking/nbp.md @@ -0,0 +1,3 @@ +Network Bootstrap Program + +Is a bootloader that is obtained via the network typically via [[TFTP]]. It handles setting up an environment in which an OS can run or install. For example, it displays a boot menu and downloads the kernel images. It sets up hardware, for example the [[NIC]]s.
\ No newline at end of file diff --git a/.trash/3 resources/linux/networking/pxe-boot.md b/.trash/3 resources/linux/networking/pxe-boot.md new file mode 100644 index 0000000..d532ac3 --- /dev/null +++ b/.trash/3 resources/linux/networking/pxe-boot.md @@ -0,0 +1,15 @@ +PXE = Preboot Execution Environment. + +PXE boot process: +1. Modified [[DHCP]] request: request to include boot information (PXE boot request). +2. Process DHCP response which includes an IP address of [[TFTP]] server and filename of [[NBP]]. +3. Download NBP over TFTP. +4. NBP executes + 1. Loads additional stuff over network, like kernel images. + 2. Handles the boot menu +5. Kernel takes over boot process and potentially downloads additional files required to complete booting. + +Popular NBP's: +- PXELINUX +- iPXE +- GRUB2 diff --git a/.trash/3 resources/linux/networking/udp.md b/.trash/3 resources/linux/networking/udp.md new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/.trash/3 resources/linux/networking/udp.md |