********* (IoKe) 10:21:34
Discuss a technical issue
********* (IoKe) 10:22:03
SIP as a data transmitted by the coded code, isn't it afraid of being eavesdropped?
******* (You are smart and ask me) 10:10:28
What data do you mean?
********* (IoKe) 10:23:27
I think it's easy to eavesdrop, intercepting the SIP protocol on the Internet, it is easy to get the RTP port and route, and then easily make eavesdropping through a specific mode.
******* (Ivan) 10:11:54
You can add SDP encryption in RTP
********* (IoKe) 10:24:39
I can easily realize the protocols of all POP3 in our LAN, including passwords, can be intercepted.
******* (golgo) 10:06
Does MD5 do?
********* (Ioke) 10:25:05
Transmission encryption?
******* (golgo) 10:12:32
********* (Ioke) 10:25:23
MD5 is just useless in your downloaded file check is not changed
******* (golgo) 10:12:54
Only this role?
********* (IoKE) 10:25:43
Can't guarantee your transmission being listened
********* (Ioke) 10:25:53
seems like it
******* (golgo) 10:13:20
That's another MD6.
********* (Ioke) 10:26:52
Do you talk about how can I encrypt the SIP protocol? So can SIP GATEWAY know if the SIP protocol is added?
******** (Ioke) 10:27:10
Does SIP are transmitted by SSL?
********* (IoKe) 10:27:29
MD7 does not guarantee that your transmission is not listening.
********* (IoKE) 10:27:47
Why, why don't everyone are not interested?
******* (golgo) 10:15:44
Have
******* (golgo) 10:15:47
SSL
******* (Golgo) 10:15:53
OpenSSL
******* (You are smart and ask me) 10:15:57
Not interested, SIP has not played well.
********* (IoKE) 10:29:10
Not that I said that there is no provision for SSL transmission in the SIP protocol.
********* (IoKe) 10:29:27
Have you achieved SSL SIP transmission channels?
********* (IoKE) 10:32:28
Follow, discuss the topic, all speechless ~~
******* (Ivan) 10:20:52
Leoo, ask a question, RTP and SIP are not coupled together.
******* (Ivan) 10:21:07
Is the RTP get the other party's IP via SIP? ******* (You are smart and ask me) 10:21:20
Not
******* (You are smart and ask me) 10:21:38
IP and ports of RTP in SIP
********* (IoKe) 10:34:46
Is not coupled together
******* (You are smart and ask me) 10:22:16
Mainly indicated in SDP
******* (Ivan) 10:22:23
Is there a IP and port in the SIP? Use
XXXX @ xxxx method
********* (IoKE) 10:35:09
But the routing of the audio that can be taken by SIP
********* (IoKe) 10:35:35
Specified, if not specified, how to communicate
******* (Ivan) 10:22:53
Do you mean that IP and Port in SDP?
******* (You are smart and ask me) 10:22:54
Indicated SDP
********* (IoKe) 10:35:55
SDP encryption?
******* (You are smart and ask me) 10:23:21
Tell the opponent you open RTP port and address
********* (IoKe) 10:37:08
This way I can easily put the RTP package, restore the RTP package in the process of their transmission.
******* (You are smart and ask me) 10:24:53
of course
******* (golgo) 10:25:08
RTP, good complex problem
********* (IoKe) 10:38:07
Will RTP will encrypt the package?
******* (You are smart and ask me) 10:25:30
If the SIP package is sent, some people have destroyed in the agent it passed.
********* (IoKe) 10:38:50
I am not in the agent.
******* (You are smart and ask me) 10:26:02
Then we have to negotiate an encryption algorithm in both parties.
********* (IoKe) 10:39:07
I capture the transfer package in the network.
******* (You are smart and ask me) 10:26:47
How do you catch it?
********* (IoKE) 10:39:35
Then I can simulate the caller to initiate a call, or listen
********* (IoKe) 10:39:59
Simply speaking, talk about the implementation in the LAN
******* (golgo) 10:27:22
********* (Ioke) 10:40:29
I can set the NIC to a mixed mode, so my network card can receive all the packages transmitted in the local area.
********* (IoKe) 10:41:02
Now I analyze SDP in the SIP package, get RTP IP and port
******* (You are smart and ask me) 10:28:38
Local area network
********* (IoKe) 10:41:46
Then there is all RTP packs of this IP in the network, then restore voice
********* (IoKe) 10:41:52
Is it very ok?
********* (Ioke) 10:42:35
If it is a wide area network, it can also be implemented, but it is not easy as the LAN
******* (You are smart and ask me) 10:30:02
It seems that hub is copying each passing thereof and then sent it over again, so you can receive any packages in the local area.
********* (IoKe) 10:43:25
Haha, have you seen five types of lines listening calipers
********* (IoKe) 10:44:02
Put the caliper card on your network cable, do not destroy your transmission, all the data is easy to capture
******* (You are smart and ask me) 10:31:31
Is there such a Dongdong?
********* (IoKe) 10:44:33
In WAN can also be implemented by ARP
********* (Ioke) 10:44:39
Haven't seen it.
********* (IoKe) 10:45:08
What is the network cable transmission data? Carrier, do the carrier caught?
********* (Ioke) 10:45:19
I am afraid it is better
******* (golgo) 10:32:46
******* (You are smart and ask me) 10:32:49
Oh, it can catch all SIP signaling through this line.
********* (IoKe) 10:45:44
Sure enough, smart
