similar to: count of active tcp sockets?

Hi there, I have some DDOS(?) attack on my router going where my apache HTTP server is flooded with short-timed connections from some host. This results in LOTS of sockets in TIME_WAIT/LAST_ACK/CLOSING states and eventually I'm out of mbufs, which, consequently means I can't even connect to the router from LAN. The kern.ipc.nmbclusters is 2560, (I guess high enough for router with

On Sat, 21 Feb 2015, Corinna Vinschen wrote: > Building on 64 bit Cygwin works out of the box. However, I have trouble > with the testsuite. As usual, I'm building outside the source tree: > > - Building the testsuite fails: > > Assembler messages: > Fatal error: can't create regress/unittests/bitmap/tests.o: No such file or directory > Makefile:152:

Hi, I have been using R for a few months and I have this working code. Don't seen any problem but this takes a long time. So if I have about 30000 rows it takes a few minutes. If I have 100000 it does not seem to complete. Original Data: Proto Recv-Q Send-Q Local-Address Foreign-Address State tcp 0 0 172.20.100.2:60255

Hi, I have a proxy/firewall, I want to dnat requests for 193.205.140.106 on port 443 towards 10.2.15.23 and requests for 193.205.140.106 on ports 4330 and 3389 towards 10.2.15.25, these rules must apply from internet, loc and fw (some client use a proxy on fw to reach these servers) I have tried with the following rules: DNAT net dmz:10.2.15.23 tcp 443 -

Hi, I get frequent logfile entries from Shorewall similar to the following: Nov 25 11:22:51 10.0.0.248 kernel: Shorewall:net2mill:DROP:IN=eth2 OUT=eth0 SRC=202.96.117.50 DST=10.0.0.10 LEN=56 TOS=0x00 PREC=0x00 TTL=241 ID=0 PROTO=ICMP TYPE=11 CODE=0 [SRC=10.0.0.10 DST=202.101.167.133 LEN=48 TOS=0x00 PREC=0x00 TTL=1 ID=13591 DF PROTO=TCP INCOMPLETE [8 bytes] ] Could someone explain what the

-----Original Message----- From: Allan Matias [mailto:amatias@amada.com] Sent: Wednesday, September 20, 2000 5:30 PM To: samba-admin@lists.samba.org Subject: Need to know more about Samba. In how to connect a Unix system to an Nt Server. Would a Unix machine be seen by the Nt when Samba software is loaded? Thank you for your attention. --Allan D. Matias Amada Software Support

Hi folks, is it possible to monitor and gather statistics in realtime (CPU, memory, HDD, network, ... - something like dstat) of guest systems with libvirt through console from host system (KVM based)? If yes, do those guests need to be created through libvirt? Thanks for your help and time.

Hi, I''m serving the puppetmaster application with its config.ru through unicorn - proxied by nginx. I''m using unix sockets, 4 workers, and 2048 backlog. The clients - after their typical "puppet run" - send back a report to the master in YAML. Some clients whose reports tend to be large (close to 2mb) get a 502 bad gateway error and error out. nginx log: 2010/10/22

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 Damien, On Feb 23 10:28, Corinna Vinschen wrote: > On Feb 22 07:59, Damien Miller wrote: > > On Sat, 21 Feb 2015, Corinna Vinschen wrote: > > > - The failing last loop in the "forwarding" script as reported back > > > during 6.7 testing is still failing for me more often than not. It's > > > always the same reason, the script tries to use

Hi, I'm having problems with ssh-agent when I am connecting to a large (several hundred) hosts at once. I'm using a kanif ( http://taktuk.gforge.inria.fr/kanif/) which is a very nice package that distributes ssh connections across the hosts you are connecting to (a fan-out sort of approach, so all connections are not coming from one host). However, all hosts have to authenticate, so all

I''m attempting to setup Squid as shown on: http://shorewall.sourceforge.net/Shorewall_Squid_Usage.html#DMZ The firewall is a Bering 1.0 firewall running Shorewall 1.3.11, Red Hat 7.2 on the server in the DMZ. I''m not seeing the requests come in to the server using tcpdump. The server is 192.168.2.1 connecting to eth2 on the firewall, the local traffic I''m trying to

Hi, I am trying to boot a server via PXE with following configured for its PXE. LABEL IMP MENU LABEL IMP LINUX memdisk INITRD linuxIso.iso APPEND iso I haven't been able to get this work, probably only because of network speed. PXE server is on RHEL 5.8 and syslinux 5.x While I was booting the server, I ran dstat on PXE server and saw the outgoing network speed was 400-500Bytes. So looks

I am using Xen 3.1.0 in centos 5.4 I have one VM consuming 100% cpu  and all other VM (linux) become very slow (no ssh and vnc access). I could access host via ssh but not VM. host cpu is about 95% idle using dstat. Pls advise how to avoid this. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users

I'm trying to do an fsck on an ext3 partition but I'm seeing abysmally slow disk throughput; monitoring with "dstat" (like vmstat) shows ~1200-1500KB/s throughput to the disks. Even with 24hrs of fsck-ing I only get ~3% (still in pass1). The filesystem is ext3 running "e2fsck -C0 /dev/sda3" and about 3.7TB on an x86_64-based system with 4GB RAM. e2fsprogs is 1.41.9.

I have the need to know how many connection the server has, i run this command but i don't know how to sum all the results and get a final number. any ideas? netstat -an | grep -E 'tcp|udp' | awk '{print $6}' | sort | uniq -c | sort -n ?? 1 CLOSE_WAIT ?? 1 FIN_WAIT_2 ?? 1 LAST_ACK ?? 1 TIME_WAIT ?? 4 SYN_SENT ? 15 ? 37 LISTEN ? 44 ESTABLISHED

I will try to explain this as best I can. I have two computers; one a Supermicro X10SAE running CentOS 6, the other a very old DOS box.[*] The DOS box runs a CCD camera, sending images via Ethernet to the X10SAE. Thus, the X10SAE runs a Python server on port 5700 (a socket which binds to 5700 and listens, and then accepts a connection from the DOS box; nothing fancy).[**] The DOS box connects to

Hey all, Been reading through all the old posts (and the docs) to familiarize myself but I still feel a bit lost. I''m on trunk and am having a bit of a hard time knowing where to start with the particular I''m trying to solve. So far, I''ve downloaded backgroundrb, done the basic rails setup, created my worker and started it using `script/backgroundrb start`.

Hola estoy tratando de configurar mi primera VPN, pero cuando me conecto al servidor VPN Netstat -nat me dice que la coneccion esta en estado TIME_WAIT, por otro lado revisando syslog encuentro lo siguiente: tincd 1.0.2 (Nov 8 2003 20:54:15) starting, debug level 0 Nov 22 08:42:15 woody tinc.vpn[5810]: /dev/net/tun is a Linux tun/tap device (tun mode) Nov 22 08:42:15 woody tinc.vpn[5810]:

I'm switching from a pop3 only dovecot install to a pop3/imap install and I'm wondering how many connections every 100 'normal' imap users might have/keep open? I'm wondering if I need to tweak any o/s related things, like time_wait, etc. Any pointers would be greatly appreciated. Thanks, Ken A.