search for: drop_connect

The patch below (against openssh 3.2.3p1) adds a CheckMaxStartups option, defaulting to yes, to determine whether sshd calls drop_connection(). The motivation behind this is twofold. In our environment, our timesharing machines get enough incoming connections that will trigger spuriously with the default value (10 forked unauthenticated connections) as well as some significantly higher values, and I'd rather disable this featu...

Hi, I am not sure to report this as a bug. so mailing to the list. I have sshd(openssh3.5p1) server running on my router and when i run tcpjunk to that port, sshd gets killed after some time 192.168.71.1 is my sshd server and 192.168.71.4 is my client from where i send my dos attack This is the tcpjunk command i gave to the ssh server #tcpjunk -s 192.168.71.1 -p 22 -c req -i 100 req session

Hi. >From my understanding the MaxStartups option can be set to limit the number of concurrent sessions the OpenSSH server opens. My concern is how OpenSSH handles the case where this number is reached. >From the code it looks like it simply closes the socket: sshd.c:1440 if (drop_connection(startups) == 1) { debug("drop connection #%d", startups); close(newsock); continue; } Why is there no disconnect message sent that explains to the client why the socket was closed? >From draft-ietf-secsh-transport-24.txt, chapter 11: ----------------------------------------...

Hi, We serve a fairly substantial number[1] of ssh connections across our fleet.? We have hit MaxStartups limits in the past and bumped it up a few times (currently at 300), but we have no warning before the limit is reached and connections start being dropped.? What I would love is some sort of instrumentation that could let us see the highest number of concurrent pre-auth connections the

...; > + > + /* must have changed from !OVERTEMP to OVERTEMP, so notify */ > + > + do_notify(ups, NOTIFY_OVERTEMP); > + setflag(&ups->status, ST_OVERTEMP); > +} > +//EW <<<<<< > + > /* cleanly close the connection to a given UPS */ > static void drop_connection(utype *ups) > @@ -1163,4 +1192,12 @@ > } > > +//EW >>>>>> > + /* UPSOVERTEMP <num> */ > + if (!strcmp(arg[0], "UPSOVERTEMP")) { > + upsovertemp = atof(arg[1]); > + return 1; > + } > +//EW <<<<<< > + >...