1: #!/bin/bash
2: #
3: # Tunnel ipip Automation
4: # Creator: Shiran Guez
5: #
6: TUN_ETH="eth0"
7: IP_DEST_EXT=""
8: TUNNEL_IP_SRC=""
9: TUNNEL_IP_DST=""
10: _CREATE_ () { 11: echo "Please enter the name of your local interface [eth0 is default]: "
12: echo "[ To Skip enter >>>skip<<< ]"
13: while :;
14: do
15: read COMM_ETH
16: if [ "$COMM_ETH" == "skip" ] ;then
17: break
18: elif [ "$COMM_ETH" == "eth0" ] ;then
19: break
20: else
21: ifconfig "$COMM_ETH" >/dev/null
22: if [ $? -eq 0 ] ;then
23: TUN_ETH="$COMM_ETH"
24: break
25: else
26: echo "You have entered a wrong ethernet interface"
27: echo "Please try again: "
28: fi
29: fi
30:
31: done
32: localip=$(ifconfig $TUN_ETH | grep Bcast | awk '{print $2}' | awk -F: '{print $2}') 33: echo "Please enter the destination IP for the tunnel: "
34: while :;
35: do
36: read IP_DEST_EXT
37: echo "Are you sure $IP_DEST_EXT is a valid IP [Y]:"
38: read ANS_ME
39: ANS_ME=$(echo $ANS_ME | tr a-z A-Z)
40: if [ "$ANS_ME" == "Y" ] ;then
41: break
42: else
43: echo "Please enter destination again:"
44: fi
45: done
46: echo "Please enter tunnel IP and Peer Address: "
47: while :;
48: do
49: echo "IP : "
50: read TUNNEL_IP_SRC
51: echo "Peer : "
52: read TUNNEL_IP_DST
53: echo "Peer subnet mask [ /16 , /24 ...]: "
54: read TUNNEL_IP_DST_MASK
55: echo "Tunnel IP will be $TUNNEL_IP_SRC and its peer address will be $TUNNEL_IP_DST using subnet mask $TUNNEL_IP_DST_MASK"
56: echo "Please confirm [Y]:"
57: read ANS_ME_NOW
58: ANS_ME_NOW=$(echo $ANS_ME_NOW | tr a-z A-Z)
59: if [ "$ANS_ME_NOW" == "Y" ] ;then
60: break
61: else
62: echo "Please enter again:"
63: fi
64:
65: done
66: ip tu ad ipiptun mode ipip local $localip remote $IP_DEST_EXT ttl 64 dev $TUN_ETH
67: ip ad ad dev ipiptun $TUNNEL_IP_SRC peer $TUNNEL_IP_DST/$TUNNEL_IP_DST_MASK
68: ifconfig ipiptun up
69: }
70:
71: _DESTROY_ () { 72: ip add | grep ipiptun > /dev/null
73: if [ $? -eq 0 ] ;then
74: ifconfig ipiptun down
75: echo "Tunnel was removed"
76: else
77: echo "No Tunnel to remove"
78: fi
79: }
80:
81: lsmod | grep ipip > /dev/null
82: if [ $? -eq 0 ] ;then
83: while :;
84: do
85: echo "Please enter 1 to create or 2 for removing a tunnel"
86: read SELECTION
87: if [ "$SELECTION" == "1" ] ; then
88: _CREATE_
89: break
90: elif [ "$SELECTION" == "2" ] ; then
91: _DESTROY_
92: break
93: fi
94:
95: done
96: else
97: echo "ipip module is not loaded try to first load the ipip module and then run the tool again, Thank you!"
98: fi
