From 079793078fb6880608f8893b5543cdf3521057a2 Mon Sep 17 00:00:00 2001
From: trimstray <trimstray@gmail.com>
Date: Fri, 11 Jan 2019 11:37:42 +0100
Subject: [PATCH] #53 - added nmap header to TOC; updated ssh examples -
 signed-off-by: trimstray <trimstray@gmail.com>

---
 README.md | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/README.md b/README.md
index 51263b7..8474bae 100644
--- a/README.md
+++ b/README.md
@@ -864,6 +864,7 @@ Linux Security Expert</b></a> - trainings, howtos, checklists, security tools an
   * [tcpick](#tool-tcpick)
   * [ngrep](#tool-ngrep)
   * [hping3](#tool-hping3)
+  * [nmap](#tool-nmap)
   * [netcat](#tool-netcat)
   * [socat](#tool-socat)
   * [lsof](#tool-lsof)
@@ -1774,6 +1775,42 @@ function _scg() {
 ssh -tt user@host bash
 ```
 
+###### SSH local port forwarding
+
+Example 1:
+
+```bash
+# Forwarding our local 2250 port to nmap.org:443 from localhost through localhost
+host1> ssh -L 2250:nmap.org:443 localhost
+
+# Connect to the service:
+host1> curl -Iks --location -X GET https://localhost:2250
+```
+
+Example 2:
+
+```bash
+# Forwarding our local 9051 port to db.d.x:5432 from localhost through node.d.y
+host1> ssh -nNT -L 9051:db.d.x:5432 node.d.y
+
+# Connect to the service:
+host1> psql -U db_user -d db_dev -p 9051 -h localhost
+```
+
+  * `-n` - redirects stdin from `/dev/null`
+  * `-N` - do not execute a remote command
+  * `-T` - disable pseudo-terminal allocation
+
+###### SSH remote port forwarding
+
+```bash
+# Forwarding our local 9051 port to db.d.x:5432 from host2 through node.d.y
+host1> ssh -nNT -R 9051:db.d.x:5432 node.d.y
+
+# Connect to the service:
+host2> psql -U postgres -d postgres -p 8000 -h localhost
+```
+
 ___
 
 ##### Tool: [linux-dev](https://www.tldp.org/LDP/abs/html/devref1.html)