When we last heard from you, the following words rang out across the 'Net: >The Sygate gateway server is the computer that connects >to the Internet and is running the Sygate software. >Sygate runs on Win95/98 and Windows NT 4.0 ( Service >Pack 3 and higher). On NT Server 4.0 it installs and >runs as an NT Service. >Sybergen does NOT document this utility. Cute. >This "Remote Administration Engine" (RAE) is SUPPOSEDLY >ACCESSIBLE ONLY FROM THE INTERNAL NETWORK, by >initiating a Telnet session to port 7323 on the Sygate >gateway. For security reasons, access to this utility >from the Internet is SUPPOSED to be blocked. >However, I have been able to access the Sygate Remote >Administration Engine from outside the Sygate gateway. >I have been able to initiate a Telnet session to port >7323 of a Sygate 3.11 gateway from machines on the >Internet that were supposed to NOT be able to establish >this kind of connection. >I have been able to duplicate this security hole on a >number of machines running Windows NT Server 4.0 with >Service Pack 4 and Sygate 3.11 builds 556 and 560. I >have not tested this on Win95/98. Also, all these NT >servers did NOT have the Sygate "Enhanced Security" >feature enabled, nor were these NT servers running >Secure Desktop (SyShield), a Sybergen firewall product. Verified with NT Workstation and Sygate as well. >HOWEVER, this access via Telnet over the Internet is >possible only ONCE per NT Server reboot. I do not know >why this is so but after ending the initial Internet >connection to port 7323 of the Sygate server, another >Telnet session cannot connect to that port until the NT >server is rebooted. Verified as well. Odd but handy. I suppose another interim fix is to make sure you telnet from external as soon as your machine has booted :) B. -- Brian P. Hampson ASL Analytical Service Laboratories Ltd System Administrator, Vancouver, BC (604)253-4188 ----------------- http://www.ASL.CA/ ---------------------------- Speaking for myself, not ASL
This archive was generated by hypermail 2b30 : Fri Apr 13 2001 - 15:32:36 PDT