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rs232-nullmodem-ppp-internetconnection

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+https://totalizator.wordpress.com/2012/10/03/connect-windows-95-to-the-internet-using-linux-box-and-rs-232-serial-port-null-modem-cable/
+
+How about connecting an old PC or laptop running Windows 95 to the Internet. No need for a NIC adapter or modem. All you need is a machine running Linux to share the connection, Point-to-Point Protocol daemon (PPPD) and a null modem serial cable.
+
+Configuring pppd:
+
+Edit your /etc/ppp/options to contain:
+
+```	
+nodetach
+debug
+dump
+noauth
+netmask 255.255.255.0
+proxyarp
+192.168.1.201:192.168.1.200
+ms-dns 192.168.1.1
+lock
+passive
+lcp-echo-interval 8
+lcp-echo-failure 6
+nologfd
+crtscts
+local
+connect 'chat TIMEOUT 20000 CLIENT CLIENTSERVER'
+115200
+/dev/ttyS0
+```	
+
+Select a proper ms-dns and /dev/ttySx values depending on your network and hardware configuration. All the options can be also passed in command line if you prefer.
+
+
+Enable ip_forwarding:
+1
+
+```		
+echo 1 > /proc/sys/net/ipv4/ip_forward
+```	
+
+Start pppd by simply invoking it. Keep in mind that it will terminate every time the client disconnects. You can use the following script to restart it automatically:
+
+```		
+#!/bin/sh
+until pppd; do
+    echo "Respawning.." >&2
+    sleep 1
+done
+```	
+
+You may need root permissions for all the above commands.
+
+Configuring Windows 95 is as simple as opening Direct Cable Connection, choosing the Guest mode and a COM port. Click Next and connection should be established immediately. You can even browse Samba shares right away. The solution should work in Windows 98 as well but I haven’t tested it. Happy browsing!