[Snort-users] 回复: Need help with telnet

sepehr hashtroudilar sepehr.ha at ...11827...
Sun Dec 25 06:23:06 EST 2016

No i cant speak in Chinese.
Let me simplify :

In my situation:
i want to detect and drop telnet cmd (send from client) bofore execution on
telnet server.

I want snort:
1. to check the stream and match rules with that.
2.If any rule matched dont send the final packet to server (witch in telnet
is always enter \r or 0d)
3.drop connection.

I know that stream5 and ftp/telnet is made for these purpose.

I tried many configuration,  but all the time i get alert after a while.
And Connection drop after cmd executed.

On Dec 25, 2016 2:16 PM, "eagleliujin" <eagleliujin at ...7427...> wrote:

> i am sorry,i cant exactly understand you.i dont know your problem.could
> you please speak chinese?
> 在 sepehr hashtroudilar <sepehr.ha at ...11827...>,2016年12月25日 下午4:28写道:
> Hi,
> I have problem with telnet commands that user is typing.
> The server to client is ok,  and i successfully get the alert with
> incoming packets from server, witch i can drop.
> The problem starts with telnet behavior witch sends every character one by
> one.
> With stream5 i managed to get it work but i get the alert afther cmd
> executed.
> Witch I want is, to prevent cmd from execution (ips) and drop the packet
> before is is executed.
> For example: i want every time user try to execute "net user" cmd,  drop
> the connection before cmd executed on server.
> Is there any configuration for this purpose with stream5 or ftp/telnet
> processors.  or any other configuration/rule?
> I read entire docs, maybe i cant find!!?
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