Security Basics mailing list archives
RE: Windows Remote Desktop
From: "Shawn Jackson" <sjackson () horizonusa com>
Date: Fri, 16 Jan 2004 14:56:48 -0800
The RDP client with XP, at the link you mentioned, is an 'enhanced' version of the RDP client. No changes were made to the RDP5 protocol through, it just window-dressing. Now that said, I like the flexibility of the XP RDP client more then the W2K-TS client. Shawn Jackson Systems Administrator Horizon USA 1190 Trademark Dr #107 Reno NV 89521 www.horizonusa.com Email: sjackson () horizonusa com Phone: (775) 858-2338 (800) 325-1199 x338 -----Original Message----- From: Jamie Pratt [mailto:jamie () nucdc org] Sent: Friday, January 16, 2004 10:49 AM To: security-basics () securityfocus com Subject: Re: Windows Remote Desktop yes, that is indeed what it was... - once i removed the username (no password was stored, so it wasnt doing auto-login.) from the *.rdp file config, it sent nothing.. (perfect!).. PS - does anyone know if there is any significant difference (security or otherwise) between using the RDP client on the MS site located here: [http://www.microsoft.com/windowsxp/pro/downloads/rdclientdl.asp] versus using the TS client software created from the win2k terminal server console itself? (the setup interface is different, that much is noticeable, but beyond that?...) regards, jamie Shawn Jackson wrote:
Do you have it set to automatically login to the server upon connection? I've noticed that the RDP Client will transmit the last
used
username with the initial connection. Try logging in with another username then disconnect and see what username it transmits then. Shawn Jackson Systems Administrator Horizon USA 1190 Trademark Dr #107 Reno NV 89521 www.horizonusa.com Email: sjackson () horizonusa com Phone: (775) 858-2338 (800) 325-1199 x338 -----Original Message----- From: Jamie Pratt [mailto:jamie () nucdc org] Sent: Thursday, January 15, 2004 1:31 PM To: security-basics () securityfocus com Subject: Re: Windows Remote Desktop hmm... the 'main' traffic does appear encrypted, but this third
packet
sent on the initial RDP connection prior to login is somewhat odd:
(the
RDP session has 'Administrator' as the default account on the TS
login
screen, and I am running as Administrator myself - what's up with the username showing in the data section of the packet if it's all
encrypted
then?) - Well..at least I can't see the password going over the
wire!
--------------------------------------------------------------------- Frame 20 (94 bytes on wire, 94 bytes captured) Ethernet II, Src: 00:07:f4:ed:e4:af, Dst: 00:0f:43:71:2c:6e Internet Protocol, Src Addr: 192.168.X.X (192.168.X.X), Dst Addr: X.X.X.X (X.X.X.X) Transmission Control Protocol, Src Port: 1054 (1054), Dst Port: 3389 (3389), Seq: 1, Ack: 1, Len: 40 Source port: 1054 (1054) Destination port: 3389 (3389) Sequence number: 1 Next sequence number: 41 Acknowledgement number: 1 Header length: 20 bytes Flags: 0x0018 (PSH, ACK) Window size: 16560 Checksum: 0x25c9 (correct) Data (40 bytes) 0000 03 00 00 28 23 e0 00 00 00 00 00 43 6f 6f 6b 69 ...(#......Cooki 0010 65 3a 20 6d 73 74 73 68 61 73 68 3d 41 64 6d 69 e: mstshash=Admi 0020 6e 69 73 74 72 61 0d 0a nistra..
------------------------------------------------------------------------
regards, jamie Depp, Dennis M. wrote: > Two statements I don't agree with: > > 1) "Additionally no actual 'data' is transferred through the RDP > connection, it's just interface information (mouse movement,
button
> clicks, typing) and screen refreshes. Now if you were using the resource > mapping then data would traverse the RDP connection and would be subject > to its encryption." > Data is sent over the wire concerning keystrokes, mouse > movements and screen refresh data. Obviously this information, > particularly keystrokes can provide data to a hacker. However all > information set via RDP is encrypted the default is 56-bit with
the
> capacity to use 128-bit RC4. Even when using local resources, the data > is still encrypted with 128-bit security. > > 2) "All in all I think that PCAnywhere and Citrix have > more secure RDP/VNC like interfaces" > The default security setting in Citrix is basic (no encryption) > PCAnywhere maybe better, I'm not sure. Both Citrix and RDP are > vulnerable to MiM attacks. Citrix does have the capability to use SSL > but this is comprable to Microsoft's VPN solution. > > Denny > > -----Original Message----- > From: Shawn Jackson [mailto:sjackson () horizonusa com] > Sent: Wednesday, January 14, 2004 6:36 PM > To: jamesworld () intelligencia com > Cc: Michael Gale; security-basics () securityfocus com > Subject: RE: Windows Remote Desktop > <snip>
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Current thread:
- RE: Windows Remote Desktop, (continued)
- RE: Windows Remote Desktop Nero, Nick (Jan 15)
- Re: Windows Remote Desktop Jamie Pratt (Jan 15)
- A different question RE: Windows Remote Desktop David Gillett (Jan 16)
- Re: Windows Remote Desktop Jamie Pratt (Jan 15)
- RE: Windows Remote Desktop Depp, Dennis M. (Jan 15)
- RE: Windows Remote Desktop Shawn Jackson (Jan 15)
- RE: Windows Remote Desktop Depp, Dennis M. (Jan 16)
- RE: Windows Remote Desktop Shawn Jackson (Jan 16)
- RE: Windows Remote Desktop Shawn Jackson (Jan 16)
- Re: Windows Remote Desktop Jamie Pratt (Jan 16)
- RE: Windows Remote Desktop Shawn Jackson (Jan 16)
- RE: Windows Remote Desktop Shawn Jackson (Jan 19)
- RE: Windows Remote Desktop Depp, Dennis M. (Jan 19)
- RE: Windows Remote Desktop Shawn Jackson (Jan 19)
- Re: Windows Remote Desktop erisk (Jan 20)
- Terminal Services Hardening >> was >> Re: Windows Remote Desktop jamesworld (Jan 20)
- RE: Windows Remote Desktop P Cannon (Jan 20)
- Re: Windows Remote Desktop erisk (Jan 20)
- RE: Windows Remote Desktop Depp, Dennis M. (Jan 19)
- RE: Windows Remote Desktop Depp, Dennis M. (Jan 20)
- RE: Windows Remote Desktop Shawn Jackson (Jan 20)
- RE: Windows Remote Desktop Nero, Nick (Jan 15)