Bugtraq mailing list archives
Re: local telnetd DoS
From: hno () HEM PASSAGEN SE (Henrik Nordstrom)
Date: Sat, 11 Sep 1999 11:18:47 +0200
Zo0mer wrote:
Hi,i found local DoS that Crash telnetd (tested on Slackware 4.0, RH 5.2) type telnet localhost | telnet localhost | telnet localhost ...... about 50 times result will be 'Connection Refused' , telnetd crash.
Sounds very much like inetd service respawn rate limitation. The default rate limit is usually something like 40 accesses/minute. See your inetd documentation for exact value of the default limit and how it may be tuned. The purpose of this limit is to limit the DOS attack to only the service attacked and not bring down the whole machine by resource exhaustion (memory, processes, CPU). -- Henrik Nordstrom
Current thread:
- local telnetd DoS Zo0mer (Sep 07)
- Re: local telnetd DoS Chris Terry (Sep 10)
- Re: local telnetd DoS George (Sep 10)
- Re: local telnetd DoS Ray Barnes (Sep 11)
- Re: local telnetd DoS Signal 11 (Sep 10)
- Re: local telnetd DoS Henrik Nordstrom (Sep 11)
- <Possible follow-ups>
- Re: local telnetd DoS infernix (Sep 10)