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Martin Hope
stighy
Asked: 2014-03-06 11:06:32 +0800 CST
  • 1

I have a Linux script that allows me to route some traffic through a VPN interface, and other traffic (from different IP) through another interface. This is my script: 

echo "ip route del default via 192.168.120.10 dev ppp0;" >> /tmp/firewallscript.sh
echo "ip route add default via 192.168.1.254 dev eth0;" >> /tmp/firewallscript.sh
echo "ip route add table 55 default via 192.168.120.10 dev ppp0;" >> /tmp/firewallscript.sh
echo "iptables -t mangle -I PREROUTING 1 -s 192.168.1.40 -j MARK --set-mark 55;" >> /tmp/firewallscript.sh
echo "iptables -t mangle -I PREROUTING 1 -s 192.168.1.41 -j MARK --set-mark 55;" >> /tmp/firewallscript.sh
echo "iptables -t mangle -I PREROUTING 1 -s 192.168.1.42 -j MARK --set-mark 55;" >> /tmp/firewallscript.sh
echo "ip rule add fwmark 55 table 55;" >> /tmp/firewallscript.sh

Because my VPN's IP changes a lot, I would like to 'parametrize' it. So instead of write this line code:

echo "ip route del default via 192.168.120.10 dev ppp0;" >> /tmp/firewallscript.sh

I need to write something like: 

echo "ip route del default via @MyVariableIP dev ppp0;" >> /tmp/firewallscript.sh

In which @MyVariableIP is ppp0's IP address. So my questions are:

  1. How can I get interface IP address using bash, knowing that the interface is ppp0?
  2. How to modify the previous script?

Thanks

networking
Martin Hope
stighy
Asked: 2014-02-23 02:46:15 +0800 CST
  • 1

This is my home network configuration:

Devices/Pc/Smartphone ---> DD-WRT Router ---> Internet Router ---> Internet/World

  • DD WRT router ip: 192.168.1.1 (default gw is 192.168.1.254)

  • Internet Router ip: 192.168.1.254

  • Devices ip going from 192.168.1.2 to 192.168.1.253

I would like to configure the DD WRT flashed router with a PPTP VPN client running. The PPTP VPN virtual device is called ppp0.

then :

  • All ip ranging from 192.168.1.40 to 192.168.1.50 pass through Vpn (so, pass through ppp0 inteface and ppp0 gateway)
  • All others ip uses default lan gateway (so, not uses vpn)

When i start VPN client on DD WRT, my route table is

0.0.0.0 via 192.168.1.254 dev eth0 
default via 192.168.120.10 dev ppp0  scope link 
8.8.8.8 via 192.168.1.254 dev eth0 
62.101.93.101 via 192.168.1.254 dev eth0 
127.0.0.0/8 dev lo  scope link 
169.254.0.0/16 dev br0  proto kernel  scope link  src 169.254.255.1 
192.168.1.0/24 dev br0  proto kernel  scope link  src 192.168.1.1 
192.168.1.0/24 dev eth0  proto kernel  scope link  src 192.168.1.132 
192.168.1.254 via 192.168.1.254 dev eth0 
192.168.120.10 dev ppp0  scope link

Now, i think i've to replace

  • default via 192.168.120.10 dev ppp0

with

  • default via 192.168.1.254 dev eth0

so ALL ip go through standard internet gateway (no PPTP vpn)... then add a rule like

  • 192.168.1.40 via 192.168.120.10 dev ppp0

to allow ONLY ip 192.168.1.40 to exit using PPTP.

But..it isn't working!

So my final question is:

  • How to configure my router route all IP through default internet gateway (192.168.1.254) AND only One Ip (or a range of ip) to exit using pptp vpn connection ?

Thanks a lot!

routing
Martin Hope
stighy
Asked: 2013-05-17 01:45:26 +0800 CST
  • 1

i need to configure a new router with DD-WRT, in my network, configured as gateway VPN.

My main gateway router is configured with ip Address 192.168.1.254, Subnet 255.255.255.0. It act also as DHCP that release 192.168.1.x address class.

The 2nd router with DD-WRT is configured with ip address 192.168.1.10. Then i configure VPN as described like image 2. The Problem is both pc1 or pc2 if configured with gateway 192.168.1.10 can't go on internet.

What am i missing ?

enter image description here

enter image description here

networking
Martin Hope
stighy
Asked: 2012-12-01 03:09:06 +0800 CST
  • 3

For my company, I would like to create a single directory for each user in a server. Each directory must be personal, and I would like to create a desktop link to that directory. For example, in my server SERVER01 I need a simple structure like

users\johnsmith

users\robertgreen

users\johndoe

Each directory must have a limit of 5 gigabytes and must be accessible only to the single user and to the domain administrator. How to do in Active Directory? With a script?

windows-server-2008
Martin Hope
stighy
Asked: 2012-07-13 07:15:21 +0800 CST
  • 3

I need to create a VPN through 3 geographical remote offices. I can buy 3 enterprise router with vpn support, or maybe i can create a VPN tunneling using 3 virtual server with (for instance) openvpn installed, and all my company's pc client setted with default gateway to my virtual server (so i can recycle some router i've in house).

My questions are

  1. Can i do this using virtual server without buying apposite hardware ?

  2. If the first question is affermative, Is there some drawbacks using 'only' software vpn ?

Thanks

vpn
Martin Hope
stighy
Asked: 2012-05-29 04:44:22 +0800 CST
  • 2

i've 600gb of data's from Mac Users, saved in a disk formatted in HFS+. A lot of folder and file name contain 'final spaces'. I don't know how users inserted them , but the result is that via Samba, a folder named "Customer ABC " (with the final space) become for example "EHFJ~1". In addition, users used special charachters like • and others strange file name.

How to massive rename that files/folder removing final spaces ? Is it possible using a linux / mac os script ?

Thanks

linux mac bash hfs+
Martin Hope
stighy
Asked: 2012-01-05 11:04:02 +0800 CST
  • 3

i would like to allow my company employee, to connect from outside office to our server using the browser. Does exists some product that emulate a 'virtual web desktop' (like an RDP session, for example) which allow to lunch our company standard software (Office, our ERP ...), browse files and folder ... without the 'limitation' of a web... so again like an RDP ? Thanks in advance

vpn remote-desktop remote-access