diff --git a/ftp b/ftp
new file mode 100644
index 0000000..1bd2ece
--- /dev/null
+++ b/ftp
@@ -0,0 +1,20 @@
+#ftp client commands
+binary - set binary transfer type
+cd - change remote working directory
+lcd - change local working directory
+get - recieve file
+mget - get multiple files
+passive - enter passive transfer mode
+ls - list contents of remote directory
+
+#Traditional ports, though they can be dynmically assigned
+Port 21 - control commands
+Port 20 - data transfer
+
+#Active mode
+Client initiates control session on port 21 and leaves port 20 open for the server to send data, and the server initiates the connection for port 20.
+***If client is behind a firewall, or NAT, then the sever might not be able to connect to send data.
+
+#Passive mode
+Server gives teh client a port to initiate a connection to for data transfer.
+***Most commonly used by browsers, ect.
diff --git a/web-servers-vulnerability.txt b/web-servers-vulnerability.txt
new file mode 100644
index 0000000..3e13e23
--- /dev/null
+++ b/web-servers-vulnerability.txt
@@ -0,0 +1,14 @@
+#Sample Files
+Since web servers are hard to make from the ground up, sample files are often in the distributions, and the knowledge of these sample files can provide openings.
+
+#Source Code Disclosure
+Allowing the source code to be viewed can make holes an files accessible if they can can be found referenced in the code.
+
+#Canonicalization
+Errors usually occur when the web server fails to fully carry out the law (that the root word for any URL/filename would be the same if it is for the same resource), and thus the web server will fail to recognize that a URL is associated with a file it addresses.
+
+#Input Validation
+Classic hacking technique, but it can lead to buffer overflows, integer errors, and heap exploits.
+
+#Denial of Service
+Attempting to waste server time to get a denial. For example, one can identify many strings that hash to the same location in an environment with a naive programming language hash table implementation.
\ No newline at end of file
diff --git a/wireless-encryptions b/wireless-encryptions
new file mode 100644
index 0000000..8820c32
--- /dev/null
+++ b/wireless-encryptions
@@ -0,0 +1,17 @@
+#Wired Equivalent Privacy (WEP)
+RC4 stream cipher w/ CRC32 for integrity check
+-->Crack: 
+by sniffing an ARP packet, then replaying it to get many encrypted replies with different IVs
+-->Avoidance: 
+Use WPA2
+
+#Wifi Protected Access (WPA)
+Temporal Key Integrity Protocol (TKIP) Message Integrity Check
+-->Crack: 
+Uses a four way handshake, and if that handshake can be captured, then a dictionary attack ban be mounted to find the Pairwise Master Key for the Access Point and client Station
+-->Avoidance: 
+Use long-keys
+
+#WPA2
+Advanced Encryption Standard (AES)
+-->crack and avoidance the same was WPA
\ No newline at end of file