Ignore simple ping

[unixfox]

If a machine ping me during the program is launched, icmptunnel crashed with this error:

root@debian:~/icmptunnel# ./icmptunnel -s 10.0.1.1
[DEBUG] Allocatating tunnel
[DEBUG] Allocatating tunnel2[DEBUG] Created tunnel tun0
[DEBUG] Starting tunnel - Dest: 10.0.1.1, Server: 1
[DEBUG] Opening ICMP socket
[DEBUG] Binding ICMP socket
0+1 records in
0+1 records out
2 bytes (2 B) copied, 9.6663e-05 s, 20.7 kB/s
0+1 records in
0+1 records out
2 bytes (2 B) copied, 7.4032e-05 s, 27.0 kB/s
[DEBUG] Script ran successfully
[DEBUG] Received ICMP packet
[DEBUG] Read ICMP packet with src: 194.90.37.75, dest: 94.23.11.59, payload_size: 129, payload: E
[DEBUG] Writing to tunnel
[DEBUG] Src address being copied: 194.90.37.75
[DEBUG] Received ICMP packet
[DEBUG] Read ICMP packet with src: 188.235.15.178, dest: 94.23.11.59, payload_size: 129, payload: Ep
[DEBUG] Writing to tunnel
[DEBUG] Src address being copied: 188.235.15.178
[DEBUG] Received ICMP packet
[DEBUG] Read ICMP packet with src: 92.222.185.1, dest: 94.23.11.59, payload_size: 4, payload: ^�
;
[DEBUG] Writing to tunnel
Unable to write to tunnel
: Invalid argument

[DhavalKapil]

I was thinking of somehow making my ICMP packets unique. So that I could filter out my own packets.

[giuscri]

making my ICMP packets unique

What about starting the data wrapped in the ICMP packet with some magic bytes?

Say, b'ICMPTUN'?

[DhavalKapil]

Yeah that's what I will have to do in the end. I'll work further on this after a month. Need to take care of a lot of things which will require proper designing.

[yunfan]

@DhavalKapil please dont add unique feature, in that case it will also be identified by those firewall maker. i think just fix the wrong data problem might be okay

[fkerem]

I have the same issue, any updates?