ROBOT.LK

Troubleshooting a DDNS Systems
??????? ??????? ?????? ??.??. ??.??. ????? ??? ?? ????? ????????? ??? ???? ????? ?? ?????? ????? ????? , ??? ??????? ???? ??? DDNS ?????/ ????? ?????????? ??????????? ??? ???? ??????? ???? ISP ???? ????? ??? HSDPA Routers ????? ??? ????? ???? ???????? ??????? ?? ???? ??????? ?????????? .!

1. ?????? ?????? ???? HSDPA Routers ?? ADSL Router ????? Port Forwarding ?? ????? IP Address ??? ??? ?? ????? ????? ?? (?? ???????? ?? Static Public IP ???? ??????? ????)/ DDNS ???? .

2. ?? ????? ?? ?????? DDNS ????? Router ?????? ??????? ?? ??? ???????? ? ??? ?? ?????.

3. ADSL/HSDPA Router ????? Port Forwarding ????? ?? ???.?? . ??? ????? ???? ?? ???? ???? ????? ????? ????? ????? No-IP DDNS Client ??????? ?? ???????? ??? ?? ????? .

??? : openvpngil.no-ip.biz

????? ??? ?????? 3 ?? ?? ????? ?? ??? ?????.

???? ?? ??????? ????? ???? ???? ..!

On Source Server (Assuming server OS is 64Bit):

1. Download the Certain rpm file into the CentOS/RedHat/Fedora server.
Ex: sendip-2.5-2.el6.rf.x86_64.rpm

2. Just install it using,
yum install -y sendip-2.5-2.el6.rf.x86_64.rpm

3. Try to test any specific Port data transfering with following Command,

sendip -p ipv4 -is 192.168.20.20 -p udp -us 5070 -ud 5060 -d "Chanaka Lasantha Nanayakkara" -v openvpngil.no-ip.biz

4. Result is,

Added 26 options
Initializing module ipv4
Initializing module udp
Finalizing module udp
Finalizing module ipv4
Final packet data:
45 00 00 38 E..8
0A AE 00 00 ....
FF 11 64 AD ..d.
C0 A8 C8 E9 ....
C0 A8 02 1F ....
13 CE 13 C4 ....
00 24 6B 5B .$k[
43 68 61 6E Chan
61 6B 61 20 aka
4C 61 73 61 Lasa
6E 74 68 61 ntha
20 4E 61 6E Nan
61 79 61 6B ayak
6B 61 72 61 kara
Sent 56 bytes to openvpngil.no-ip.biz
Freeing module ipv4
Freeing module udp

On Destination Server:

??? ????? ????? ??-???.?? ???????? ????????? ??? ??? ??? ??? ???? Router ????? forward ?? Port Address ?? ??? 192.168.20.21 ???.?? ??? ???? ?? ????? ???? , ????? ???? ??? ???? ?????? ..!

1. Listning a Specific Port Traffic Data form the "openvpngil.no-ip.biz",

tcpdump -i eth0 "port 5060"

just use those are the two command if you need to save the result as a log file (OPTIONAL),

touch sendip.log
tcpdump -i eth0 "port 5060" >> sendip.log && tail -f sendip.log

2. Result is,

14:51:28.514240 IP openvpngil.no-ip.biz.vtsas > 192.168.20.21.sip: SIP, length: 28

~???? ???? ????? ??????~

I've accidently send your host a one udp data packet.
You may have recieved it by now.

I need my data packet back..... That data packet is mine



Just kidding , good article. Thanks for sharing your knoweldge.
So everybody could freely register some NDS record under no-ip.biz right?

SemiconductorCat wrote:I've accidently send your host a one udp data packet.
You may have recieved it by now.

I need my data packet back..... That data packet is mine



Just kidding , good article. Thanks for sharing your knoweldge.
So everybody could freely register some NDS record under no-ip.biz right?

ADSL ??????? ??????? DVR ??????????? ?????:

3G Router ????? ?????? ?? Ethernet LAN ?????? ????????? ????? ???????? ????? ???? ????? ??????? ?? ???? ??? ????? ????? ???? Linux Install ???? ???? ?? ?????? ???? ????? ..! ??????? ???????? ???? / Mini_computer ???? RedHat/Fedora/CentOS/Lubuntu/Ubuntu Server ??????? ????? ..!

?????? ??? no-ip Client ?? Install ?????.

?????? ??????? ????? Server ??? VPN Server ???? ??????? ?? ?????? ????? ???? , ???? DVR ????? ???????? ????? ??? 3G Router ????? ?????? ?? Ethernet LAN ?????? ????????? ????? ???????? ????? ???? ????? ??????? ?? ???? ??? ????? ????? ????? .!

????? ?????? VPN Client ????????? ??????? ?? ??? ???? ??????????? Connect ????. ??? ??? DVR ????? LAN IP Address ?? ???? ????????? ????? ????, ????? ??????? ..!

???????? ??????????? ?? ??? ????? ???????. ??? ?????? ???????? ????? ?? ??? ???? ???? ??????? ????? ???? ????. ??? ???? ????????? ??? ??????????. ???????? ???!

mehi sadhan lesa kriya kiremata HSDPA router ekata ekata labena ip eka public ip ekak wiya yuthudha

mohan wrote:mehi sadhan lesa kriya kiremata HSDPA router ekata ekata labena ip eka public ip ekak wiya yuthudha

???? ..!

?????? ??.??.??? ???????? ?????? ????? ?????? ???? ???? ???? ?? ???? ???.??. ??.??. ??????? ????? ..!