Well friends: I will try to explain the steps that I made (incorporating the three ideas that arose, those of Michael Appeldorn, Mark Dalley and Boris Lorenz). There is not any file in the clients called ADVERT.DLL. I have proven using a client ftp free called CoffeCup (I believe that is your name, I don't remember well), with the same problem, Linux freezes; it doesn't care if I use passive or active mode. During the night it disables the firewall, and just leaves the masquerading options (using iptables and the example that it is in the header of the file firewall.rc.config); regrettably I obtained the same result, Linux continues freezing with petitions ftp. I admit that the option of using the kernel 2.2.20, disable pppoe/pppox and to install Roaring Penguin pppoe didn't prove it, since alone I can make it during the weekend; this company prefers to make it during the hours of less work (Saturdays and Sundays they also work). Now then, the boys of systems made two things while it was me out, they installed a memory monitor of the KDE and they entered to the system like a normal user, all the previous tests were made as root. And these two things happened: 1) the freezing percentages lowered until almost anything, with the exception of the ftp, that continues generating problems, 2) when linux freezes -for example, using a petition ftp - the memory monitor of the KDE goes diminishing the free memory until leaving it in 0 (zero), then linux freezes completely. Every time I am more confused, it should surely have several problems, I don't unite alone. And now I believe that the kernel 2.4.4 under certain conditions are unstable. I believe that it should no longer have a 'pacific solution' for this problem. I expect their help, and also understanding. Ernesto
-----Mensaje original----- De: Grupo Dignitas [mailto:gdignitas@gamma.com.ar] Enviado el: lunes 18 de febrero de 2002 9:11 Para: Suse Security Asunto: [suse-security] Ftp & more problems
Friends: The days 5 and 7 of this month, I sent them two mail requesting suggestions about problems that I had (I have) using ftp. Up to now nobody has answered me except for Marc Heuse in private mail. I appeal you since the answer of Marc again (to change the kernel, use at the moment the 2.4.4) he has still left me more doubts. It should have a 'pacific solution' for this problem, that is to say that doesn't commit the costs and working hours of the company. I trust them in that alone precise an orientation, for where to begin to solve the problem, I don't specify magic solutions, these don't exist. The scenario is this: a server Linux with one ADSL 128/256 kb lines in a router Cisco 777, in eth0 it is the net of the company with 45 users using Internet and electronic mail; in eth1 the router mentioned up. The server has the SuSEfirewall2-2.1 and SuSE 7.2, allowing the members of the net to consent to the mentioned services. The company has hired a server ftp (ftp.thecompany.com.ar) with the phone company of our area (Telecom). In the area of systems, two people specify to make ftp to that server and to send for the same way information to the branches that are in other towns; the software that they use in you scheme them client it is the Windows Commander and CuteFTPpro. Now then, either that they use the passive or active mode to make ftp, the server Linux freezes, totally frozen; and it is necessary to restart the server. It doesn't always happen, and it is not known which are the conditions of the server in the moment of the freezing. I cannot have solved the problem for 2 months, I have proven almost everything, from different configurations of the SuSEfirewall2-2.1 until the update of the iptables (1.2.1 at 1.2.2), but anything works. In the inetd.conf has active the Proftpd, although I am not very sure that it is relevant. Now, from D.O.S. in a machine client I use ftp and works well, very well; and Linux doesn't freeze. During the hours of more work, that is to say, all the clients using Internet and mail, it is when more 'hang'; up to four times during the morning. But in the afternoon it diminishes a lot the frequency of the freezing, until any 'hang' in hours of the night. But or less this is what happens, I wait to have explained the problem well. Some help or orientation?.
Thanks folks (folks, no list)
Ernesto
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