> From: Jason Johns - SAS(IT) [mailto:JJohnsat_private] > > Today we were using nmap to scan our network and when we scanned our > Tru64 machines, telnet and ftp froze and timed out. We could not make As another data point, I ran nmap against one of our systems and managed to kill rpc.lockd. Made for a bad situation as the box accesses its Oracle databases from a NetApp Filer. :) By and large, the OS appears to handle portscans rather badly. I've had many services (lockd mentioned above, telnet, ftp, snmp, ttdbserverd among others) either momentairly freeze or flat out die. Thus, I've made it a goal to secure the boxes as well as possible (tcpwrappers, etc..). > We are running Tru64 Unix 4.0D patch kit 3 on Alpha 4100's and 8400's. > The nmap command line that was used is: > nmap -T Polite -O -p 23,139 -oM /tmp/lst 'xxx.xxx.16-44.*' We have Tru64 5.1 & 5.1A running on 2100s, 4100s & DS20s. The box which had lockd freak out was a DS20. fwiw.. NEVER run nmap against a production Alpha box outside of your maintenance window.. at ANY nice level. No es bueno. SelfLART already administered. You can all laugh at my expense now, -r -- -Ross Roberts Unix/Network Administrator Alcatel Telecommunications Cable
This archive was generated by hypermail 2b30 : Wed Jan 30 2002 - 14:21:29 PST