README.md

@@ -25,7 +25,6 @@ Basic features:
 - Transparent proxy (redsocks)
 - Transparent DNS proxy (hijack port 53 packets)
 - Detect NetworkManager and make sure it won't interfere (handle interface (un)managed status)
-- Detect firewalld and make sure it won't interfere our (by using `trusted` zone)
 - You can run many instances, to create many different networks. Has instances managing feature.
 
 **For many other features, see below [CLI usage](#cli-usage-and-other-features)**
@@ -67,7 +66,7 @@ Internet----(eth0/wlan0)-Linux-(virtual interface)-----VM/container
 
 1-file-script. Release on [Linux-router repo on Github](https://github.com/garywill/linux-router). Just download and run the bash script (meet the dependencies). In this case use without installation.
 
-I'm currently not packaging for any distro. If you do, open a PR and add the link (can be with a version badge) to list here
+> I'm currently not packaging for any distro. If you do, open a PR and add the link (can be with a version badge) to list here
 
 | Linux distro |                                                                                                            |
 | ------------ | ---------------------------------------------------------------------------------------------------------- |
@@ -82,9 +81,9 @@ I'm currently not packaging for any distro. If you do, open a PR and add the lin
 - iptables (or nftables with `iptables-nft` translation linked)
 - WiFi hotspot dependencies
   - hostapd
-  - iw (or iwconfig, when iw can not recognize adapter)
+  - iw
+  - iwconfig (you only need this if 'iw' can not recognize your adapter)
   - haveged (optional)
-  - crda and wireless-regdb (optional)
 
 
 
@@ -92,7 +91,7 @@ I'm currently not packaging for any distro. If you do, open a PR and add the lin
 
 ### Provide Internet to an interface
 
-```bash
+```
 sudo lnxrouter -i eth1
 ```
 
@@ -100,7 +99,7 @@ no matter which interface (other than `eth1`) you're getting Internet from.
 
 ### Create WiFi hotspot
 
-```bash
+```
 sudo lnxrouter --ap wlan0 MyAccessPoint -p MyPassPhrase
 ```
 
@@ -112,14 +111,16 @@ Clients access Internet through only `isp5`
 
 <details>
 
-```bash
+```
 sudo lnxrouter -i eth1 -o isp5  --no-dns  --dhcp-dns 1.1.1.1  -6 --dhcp-dns6 [2606:4700:4700::1111]
 ```
 
 > In this case of usage, it's recommended to:
 > 
 > 1. Stop serving local DNS
-> 2. Tell clients which DNS to use (ISP5's DNS. Or, a safe public DNS, like above example)
+> 2. Tell clients which DNS to use ISP5's DNS. (Or, a safe public DNS, like above example)
+
+> Also, read *Notice 1*
 
 </details>
 
@@ -127,14 +128,13 @@ sudo lnxrouter -i eth1 -o isp5  --no-dns  --dhcp-dns 1.1.1.1  -6 --dhcp-dns6 [26
 
 <details>
 
-```bash
-sudo lnxrouter -n -i eth1
 ```
-
+sudo lnxrouter -n -i eth1
-```bash
 sudo lnxrouter -n --ap wlan0 MyAccessPoint -p MyPassPhrase
 ```
 
+> Read _Notice 1_
+
 </details>
 
 ### Internet for LXC
@@ -143,7 +143,7 @@ sudo lnxrouter -n --ap wlan0 MyAccessPoint -p MyPassPhrase
 
 Create a bridge
 
-```bash
+```
 sudo brctl addbr lxcbr5
 ```
 
@@ -156,7 +156,7 @@ lxc.network.link = lxcbr5
 lxc.network.hwaddr = xx:xx:xx:xx:xx:xx
 ```
 
-```bash
+```
 sudo lnxrouter -i lxcbr5
 ```
 
@@ -168,7 +168,7 @@ All clients' Internet traffic go through, for example, Tor (notice this example
 
 <details>
 
-```bash
+```
 sudo lnxrouter -i eth1 --tp 9040 --dns 9053 -g 192.168.55.1 -6 --p6 fd00:5:6:7::
 ```
 
@@ -193,7 +193,7 @@ To not give our infomation to clients. Clients can still access Internet.
 
 <details>
 
-```bash
+```
 sudo lnxrouter -i eth1 \
     --tp 9040 --dns 9053 \
     --random-mac \
@@ -211,13 +211,13 @@ sudo lnxrouter -i eth1 \
 
 Create a bridge
 
-```bash
+```
 sudo brctl addbr lxdbr5
 ```
 
 Create and add a new LXD profile overriding container's `eth0`
 
-```bash
+```
 lxc profile create profile5
 lxc profile edit profile5
 
@@ -235,13 +235,13 @@ name: profile5
 lxc profile add <container> profile5
 ```
 
-```bash
+```
 sudo lnxrouter -i lxdbr5 --tp 9040 --dns 9053
 ```
 
 To remove that new profile from container
 
-```bash
+```
 lxc profile remove <container> profile5
 ```
 
@@ -249,13 +249,13 @@ lxc profile remove <container> profile5
 
 Add new `eth0` to container overriding default `eth0`
 
-```bash
+```
 lxc config device add <container> eth0 nic name=eth0 nictype=bridged parent=lxdbr5
 ```
 
 To remove the customized `eth0` to restore default `eth0`
 
-```bash
+```
 lxc config device remove <container> eth0
 ```
 
@@ -267,7 +267,7 @@ lxc config device remove <container> eth0
 
 In VirtualBox's global settings, create a host-only network `vboxnet5` with DHCP disabled.
 
-```bash
+```
 sudo lnxrouter -i vboxnet5 --tp 9040 --dns 9053
 ```
 
@@ -279,11 +279,11 @@ sudo lnxrouter -i vboxnet5 --tp 9040 --dns 9053
 
 Create a bridge
 
-```bash
+```
 sudo brctl addbr firejail5
 ```
 
-```bash
+```
 sudo lnxrouter -i firejail5 -g 192.168.55.1 --tp 9040 --dns 9053 
 firejail --net=firejail5 --dns=192.168.55.1 --blacklist=/var/run/nscd
 ```
@@ -309,16 +309,17 @@ Options:
                             and to provide Internet to
                             (To create WiFi hotspot use '--ap' instead)
     -o <interface>          Specify an inteface to provide Internet from.
+                            (See Notice 1)
                             (Note using this with default DNS option may leak
                             queries to other interfaces)
-    -n                      Do not provide Internet
+    -n                      Do not provide Internet (See Notice 1)
     --ban-priv              Disallow clients to access my private network
     
     -g <ip>                 This host's IPv4 address in subnet (mask is /24)
                             (example: '192.168.5.1' or '5' shortly)
     -6                      Enable IPv6 (NAT)
-    --no4                   Disable IPv4 Internet (not forwarding IPv4).
+    --no4                   Disable IPv4 Internet (not forwarding IPv4)
-                            Usually used with '-6'
+                            (See Notice 1). Usually used with '-6'
                             
     --p6 <prefix>           Set IPv6 LAN address prefix (length 64) 
                             (example: 'fd00:0:0:5::' or '5' shortly) 
@@ -327,7 +328,7 @@ Options:
     --dns <ip>|<port>|<ip:port>
                             DNS server's upstream DNS.
                             Use ',' to seperate multiple servers
-                            (default: use /etc/resolv.conf)
+                            (default: use /etc/resolve.conf)
                             (Note IPv6 addresses need '[]' around)
     --no-dns                Do not serve DNS
     --no-dnsmasq            Disable dnsmasq server (DHCP, DNS, RA)
@@ -414,11 +415,12 @@ Options:
     --stop <id>             Stop a running instance
         For <id> you can use PID or subnet interface name.
         You can get them with '--list-running'
-                
+
-Examples:
+    Notice 1:   This script assume your host's default policy won't forward
-    lnxrouter -i eth1
+                packets, so the script won't explictly ban forwarding in any
-    lnxrouter --ap wlan0 MyAccessPoint -p MyPassPhrase
+                mode. In some unexpected case (eg. mistaken configurations) may
-    lnxrouter -i eth1 --tp <transparent-proxy> --dns <dns-proxy>
+                cause unwanted packets leakage between 2 networks, which you
+                should be aware of if you want isolated network
 ```
 
 </details>
@@ -450,9 +452,30 @@ Visit [**my homepage** 🏡](https://garywill.github.io) to see **more tools and
 - 🍃 Also some [unfulfilled enhancements in the Issues](https://github.com/garywill/linux-router/issues?q=is%3Aissue+is%3Aopen+label%3Aenhancement)
 - 🙋‍♂️ Contributions are not limited to coding. There're [some posts and questions](https://github.com/garywill/linux-router/issues) that need more people to answer
 
+## Notice
+
+<details>
+
+```
+    Notice 1:   This script assume your host's default policy won't forward
+                packets, so the script won't explictly ban forwarding in any
+                mode. In some unexpected case (eg. mistaken configurations) may
+                cause unwanted packets leakage between 2 networks, which you
+                should be aware of if you want isolated network
+```
+
+</details>
+
 ## TODO
+
+Sooner is better:
+- Detect firewalld and make sure it won't interfere our interface
+
+Future:
 - WPA3
 - Global IPv6
+- Explictly ban forwarding if not needed
+- Bring bridging method back
 
 ## License