masscan: edit page (#12645)

pages/common/masscan.md

@@ -4,7 +4,7 @@
 > Best run with elevated privileges. Nmap compatibility run `masscan --nmap` to find out more.
 > More information: <https://github.com/robertdavidgraham/masscan>.
 
-- Scan an IP or network subnet for port 80:
+- Scan an IP or network subnet for [p]ort 80:
 
 `masscan {{ip_address|network_prefix}} --ports {{80}}`
 
@@ -16,10 +16,18 @@
 
 `masscan {{10.0.0.0/16}} --top-ports {{100}} --excludefile {{path/to/file}}`
 
-- Scan the Internet for port 443:
+- Scan the Internet for web servers running on port 80 and 443:
 
-`masscan {{0.0.0.0/0}} --ports {{443}} --rate {{10000000}}`
+`masscan {{0.0.0.0/0}} --ports {{80,443}} --rate {{10000000}}`
+
+- Scan the Internet for DNS servers running on UDP port 53:
+
+`masscan {{0.0.0.0/0}} --ports {{U:53}} --rate {{10000000}}`
 
 - Scan the Internet for a specific port range and export to a file:
 
-`masscan {{0.0.0.0/0}} --ports {{0-65535}} -output-format {{binary|grepable|json|list|xml}} --output-filename {{path/to/file}}`
+`masscan {{0.0.0.0/0}} --ports {{0-65535}} --output-format {{binary|grepable|json|list|xml}} --output-filename {{path/to/file}}`
+
+- Read binary scan results from a file and output to `stdout`:
+
+`masscan --readscan {{path/to/file}}`