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To: os2ann.DISCUSS@bloom-picayune.MIT.EDU Date: 15 Nov 1997 01:05:00 -0400 From: ralf.christen@ibm.net (Ralf Christen) Reply-To: ralf.christen@ibm.net (Ralf Christen) Reply-to: ralf.christen@ibm.net (Ralf Christen) [Followups directed to comp.os.os2.networking.tcp-ip] --------------------------------------------------------------------- The TCP/IP Portscanner V1.60 is available now! What this software does ----------------------- This software scans well known TCP/IP ports of one or more servers for active services. You can specify a single server name (e.g. www.myserver.com) or a range of IP-Addresses (e.g. from 192.85.184.12 to 192.85.184.66). You can also put a list of IP-Addresses into a simple ASCII file (one IP-Address per line) and process this list. Be aware that hostnames are not allowed in an IP-Address file. Active port numbers are being listed with the name of the service commonly used on this port. What you need ------------- You need Warp V3 or Warp V4 with TCP/IP or the IBM Internet Access Kit (IAK) installed to run this software. Scanned ports - Recognized services ----------------------------------- The TCP/IP Portscanner scans all ports listed in the SERVICES file stored in the ETC directory of your local workstation. While Warp V4 has a usable SERVICES file, Warp V3 still has a very old version without important services like HTTP (WWW) or POP. Thus, Warp V3 users MUST update their SERVICES file with a newer version from a Warp V4 machine or downloaded one from the Technical Support Page at http://www.dataline.ch/~rch/portscan If you try to scan a server which is not powered on, the TCP/IP portscanner stops scanning after 15 seconds. Missed services --------------- It is not necessary to run a server using the default port; it is also possible to have a server using different port numbers. This is usually done when running more than one server (of the same type) on the same machine (such as two HTTP- Servers on the same system). One of those two servers must switch from the default HTTP-Port 80 to a different number (let's say to 1234). Users can still access this server using an URL such as "http://www.myserver.com:1234". Since 1234 is not a standard port number, it is not listed in the SERVICES file and will not be detected. Even if you manually add port 1234 to the SERVICES file, we still can't detect the type of server. This could be a HTTP-Server (moved from port 80), a NNTP-Server (moved from port 119) or even a Time-Server (moved from port 37). Purpose ------- This is not a hacker tool! It is unfriendly (and maybe even unlawful) to scan other people's servers. This software tries to CONNECT to the target server using various TCP/IP port numbers. Be aware that your IP-Address is being logged on the target system. The purpose of this software is to scan your OWN systems to have an overview on what servers are running and therefore need surveillance or additional protection. This is very important if you aren't behind a firewall: One single (commonly unknown) TELNET- or REXEC-Server could grant access to your entire network, including services such as NETBIOS, using the authority of the workstation user the server is running on. What's new in this release -------------------------- - Ability to export data to an ASCII file - A full set of commandline parameters - Buttons are disabled while scan is running - Fix: The IP-filename overrode the name of the SERVICES file. Maybe you have to re-enter the name of your SERVICES file. Download this software ---------------------- You can get the latest release of this software at: http://www.horgen.net/rem/software/ If you have questions or suggestions, mail to: ralf.christen@ibm.net _____________________________________________________________________ | NOTE: Please send submissions by EMAIL os2_ann_req@bix.com | Correspondence to the COOA Moderator: lfirrantello@bix.com . | Please see: http://www.bix.com/pub/os2ann/pindex.htm for posting guidelines
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