optman

import hmac
import hashlib
import base64

def create_token(msg, accessKey, secretKey):

	encodedMsg = base64.b64encode(bytearray(msg,"utf-8"))
	sign = hmac.new(bytearray(secretKey,"utf-8"), msg=encodedMsg,
			digestmod=hashlib.sha1).digest()
	encodedSign  =base64.b64encode(sign)

optman

package main

import (
	"errors"
	"net"
	"strconv"
	"syscall"
	"unsafe"
	"os"
)

optman

#include <stdio.h>
#include <sys/types.h>          /* See NOTES */
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <errno.h>
#include <string.h>
#include <arpa/inet.h>
int main(){

optman

//dig @8.8.8.8
11:08:48.254393 IP (tos 0x0, ttl 64, id 24379, offset 0, flags [none], proto UDP (17), length 71)
    192.168.199.3.49860 > 8.8.8.8.53: 50653+ [1au] A? www.google.com. (43)
11:08:48.413252 IP (tos 0x0, ttl 38, id 5516, offset 0, flags [none], proto UDP (17), length 87)
    8.8.8.8.53 > 192.168.199.3.49860: 50653 1/0/1 www.google.com. A 216.58.221.132 (59)

//dig  @192.168.199.1 (which's dns is point to 8.8.8.8)
11:09:17.174259 IP (tos 0x0, ttl 64, id 16284, offset 0, flags [none], proto UDP (17), length 71)
    192.168.199.3.44789 > 192.168.199.1.53: 53494+ [1au] A? www.google.com. (43)
11:09:17.175213 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 151)

optman

client(199.3) <-> router(199.1)<-> chinadns(199.3)

//client -> router
10:52:02.298528 IP 192.168.199.3.52133 > Hiwifi.lan.domain: 46227+ [1au] A? www.douban.com. (43)

//router -> chinadns
10:52:02.299806 IP Hiwifi.lan.44563 > 192.168.199.3.domain: 19371+ [1au] A? www.douban.com. (43)

//chinadns -> uper
10:52:02.299936 IP 192.168.199.3.34984 > public1.114dns.com.domain: 16780+ [1au] A? www.douban.com. (43)

optman

pi@pi2 ~ $ sudo traceroute -T 221.194.130.209
traceroute to 221.194.130.209 (221.194.130.209), 30 hops max, 60 byte packets
 1  localhost (192.168.1.1)  0.882 ms  0.682 ms  0.706 ms
 2  * * *
 3  61.148.163.205 (61.148.163.205)  15.087 ms  14.741 ms  14.398 ms
 4  124.65.56.157 (124.65.56.157)  20.646 ms  20.313 ms  19.971 ms
 5  124.65.194.13 (124.65.194.13)  19.619 ms  19.271 ms  18.926 ms
 6  * * *
 7  pppa174.sj.he.cn (202.99.160.174)  20.141 ms pppa214.sj.he.cn (202.99.160.214)  31.130 ms pppa218.sj.he.cn (202.99.160.218)  37.270 ms
 8  218.12.255.194 (218.12.255.194)  29.148 ms  24.036 ms  28.062 ms

optman

pi@pi2 ~ $ sudo cat /proc/net/ip_conntrack
tcp      6 47 TIME_WAIT src=10.10.10.234 dst=123.125.105.246 sport=63062 dport=80 src=123.125.105.246 dst=192.168.1.2 sport=80 dport=63062 [ASSURED] mark=0 use=2
udp      17 55 src=10.10.10.234 dst=10.10.10.1 sport=41984 dport=53 src=10.10.10.1 dst=10.10.10.234 sport=53 dport=41984 [ASSURED] mark=0 use=2
udp      17 73 src=10.10.10.234 dst=10.10.10.1 sport=32966 dport=53 src=10.10.10.1 dst=10.10.10.234 sport=53 dport=32966 [ASSURED] mark=0 use=2
tcp      6 431737 ESTABLISHED src=10.10.10.234 dst=111.206.200.2 sport=50459 dport=5222 src=111.206.200.2 dst=192.168.1.2 sport=5222 dport=50459 [ASSURED] mark=0 use=2
tcp      6 431658 ESTABLISHED src=10.10.10.234 dst=123.58.180.78 sport=38317 dport=6002 src=123.58.180.78 dst=192.168.1.2 sport=6002 dport=38317 [ASSURED] mark=0 use=2
udp      17 24 src=10.10.10.234 dst=8.8.4.4 sport=52636 dport=53 src=8.8.4.4 dst=10.0.6.5 sport=53 dport=52636 mark=0 use=2
udp      17 11 src=10.10.10.234 dst=114.114.114.114 sport=51715 dport=5

optman

pi@pi2 ~ $ sudo netstat -tunp
Active Internet connections (w/o servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 192.168.1.2:1723        111.206.27.194:40221    ESTABLISHED 14026/pptpd [111.20
tcp        0    232 192.168.1.2:22          111.206.27.194:62388    ESTABLISHED 13660/sshd: pi [pri
tcp        0      0 192.168.1.2:54861       106.185.54.176:1723     ESTABLISHED 13735/pptp

pi@pi2 ~ $ sudo netstat -tunlp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name

optman

Device eth0 [192.168.1.2] (1/4):
================================================================================
Incoming:





                                                       Curr: 2.11 MBit/s
                                                       Avg: 1.14 MBit/s

optman

optman@ubuntu:~$ iperf -c 10.10.10.1 -d
------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 85.3 KByte (default)
------------------------------------------------------------
------------------------------------------------------------
Client connecting to 10.10.10.1, TCP port 5001
TCP window size: 85.0 KByte (default)
------------------------------------------------------------
[  5] local 192.168.199.3 port 54435 connected with 10.10.10.1 port 5001