Re: 回复： Need help with telnet

[Luke Ager <luke.ager () me com>]

Since telnet isn't exactly secure my advice would be to block it altogether if possible. 

Sent from my iPhone

> On 25 Dec 2016, at 11:23, sepehr hashtroudilar <sepehr.ha () gmail com> wrote:
>
> 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 () 163 com> wrote:
> > i am sorry,i cant exactly understand you.i dont know your problem.could you please speak chinese?
> >
> > 在 sepehr hashtroudilar <sepehr.ha () gmail com>，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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