search for: ip_conntrack_max

Hi all. i'm trying to modify some parameters but when system reboots it doesn't load. For the sysctl if I run sysctl -p then it changes /etc/sysctl.conf net.ipv4.netfilter.ip_conntrack_max = 1048576 /etc/modprobe.conf options ip_conntrack hashsize=131072 after reboot results cat /proc/sys/net/ipv4/netfilter/ip_conntrack_max 65536 cat /sys/module/nf_conntrack/parameters/hashsize 16384 expected results cat /proc/sys/net/ipv4/netfilter/ip_conntrack_max 1048576 cat /sys/modul...

I have just completed the installation of a new firewall running Shorewall 1.4 on Mandrake 9.2 for our campus network. It appears to be running fairly well so far, but is generating significantly more log entries than our previous linux 2.0.x firewall... Our previous firewall enjoyed more than 6 years of 24/7 operation with no downtime before we finally decided it needed more horsepower, and

...atio ... in my case 65440 But how can I determine the best value ? My computer is P4 Hyper Threading 3.6 Ghz ... Might be I should put 131072 as CONNTRACK_MAX ? This server is a bridge that only do L7 QoS (filter + o - 70 Mbits for > 600 customers ). # cat /etc/sysctl.conf net.ipv4.netfilter.ip_conntrack_max = 131072 #cat /proc/sys/net/ipv4/netfilter/ip_conntrack_max 131072 # cat /proc/sys/net/ipv4/netfilter/ip_conntrack_buckets 8192 #cat /etc/modprobe.d/arch/i386 alias eth0 tg3 alias eth1 tg3 alias eth2 e1000 options ipt_conntrack hashsize=65440 Many thanks for you help Regards

...don't think that's had any effect. any thoughts? what additional info can I provide that would be helpful? I did find a script that clears out some of the stale connections using hping2, but I don't know if that's really a great solution to this problem. cat /proc/sys/net/ipv4/ip_conntrack_max # 34576 after cleaning out the ip_conntrack table using an hping2 script: cat /proc/net/ip_conntrack | wc -l # 3702 -- this number was around 34000 before I cleared it out because it was dropping packets. rebooting the machine, of course, clears it out. I've spent many hour...

...current firewall) has *not* undergone any changes aside from installing another 512Mb of RAM. Kernel is the same, and shorewall config is essentially the same. In searching for an answer, I came across this link which suggests that a dedicated firewall should have the ip_conntrack hashsize = ip_conntrack_max: http://www.wallfire.org/misc/netfilter_conntrack_perf.txt I know this isn''t strictly a shorewall issue, but I mention it here in case it is relevant. I plan to visit netfilter lists to investigate more. Now for a shorewall issue: it occurred to me that if I took a "shorewall st...

...s kind of error message : Feb 23 14:26:19 gestor1 kernel: printk: 38 messages suppressed. Feb 23 14:26:19 gestor1 kernel: ip_conntrack: table full, dropping packet. The server is celeron pentium 4 based 3Ghz + 512Mb ram Does anyone could suggest me what are the best value for net.ipv4.netfilter.ip_conntrack_max net.ipv4.netfilter.ip_conntrack_tcp_timeout_established Might be I can tune other kernel value ? Thanks for your help Regards ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net''s Techsay...

Hi to all. I have a shorewall ver 2.0.13 running in Fedora Core 3, the machine has dual cpu, 1gb of ram, and 40GB of hard disk space. The machine runs shorewall only and had tested it to openvpn but most of the time just shorewall. The problem, there were instances when internet traffic coming from the local network just halts, I needed to restart shorewall in order the traffic to flow again.

...rack: falling back to vmalloc. .... I''ve use this "math" to calculate it : (3072 - 256) x 1024^2 - 236 = 12511822,1027 The near "power of 2" seems to be 2^23 = 8388608 With this result I''ve change my "sysctl.conf" file net.ipv4.netfilter.ip_conntrack_max = 8388608 net.ipv4.netfilter.ip_conntrack_tcp_timeout_established= 28800 and I''ve to change the HASHSIZE to ip_conntrack_max / 4 ... What is wrong ! How can I solve the problem ... I''m waiting for a server with 8Gb (8192) of ram most of available to use with conntrack ! Reg...

It seems that the value of net.ipv4.ip_conntrack_max has no so much to do with the conntrack ''cause the when I measure current number of connections i.e.: wc -l /proc/net/ip_conntrack they show as ~20-30 000 connection, but I set sysctl -w net.ipv4.ip_conntrack_max=150000 and packets get dropped, I have to set it to value above 200 000...

...changed is that we have company so there is 1 or 2 extra boxes on at times. But I have 1 or 2 extra boxes connected frequently with no problems when I''m fixing machines. I''m on cable if that helps any. 2. What it the proper way to fix the problem? 3. What is a normal value for ip_conntrack_max? Thanks. Mark II -- Mark D. Montgomery II <techiem2@techiem2.net>

...er notable difference is that the conntrack tables are much larger than normal. `wc -l /proc/net/ip_conntrack` returns >19000 on the routers experiencing packet loss while virtually all of the other routers (not having this issue) have less than 5000 entries in ip_conntrack. I tried increasing ip_conntrack_max in /proc, setting it to 65536 - didn''t make a difference. Are there any other /proc settings I should change to improve performance? Any tips on analyzing the ip_conntrack data to find oddities? FYI I''m using kernel 2.4.25. I''d rather not upgrade to 2.6 since doing so...

xen-3.0.3-94.el5_4.2 2.6.18-164.6.1.el5xen RHEL5.4 x86_64 I''ve got a dom0 that does nothing but have a DomU created. The DomU gets plenty of load. Over time, the dom0''s ipconntrack table fills up but not the DomU. Once it gets full I can restart iptables and it''s fine. The strange thing is this only happens on hosts I have provided (hardware and hosting) from one

Hi all, I''m searching for a tutorial how to setup multiple network cards with xen network bridge setup in debian lenny. My problem is, bridges seams only to work if i put an ip adress in dom0 to them. Thanks, Alex _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users

https://bugzilla.netfilter.org/show_bug.cgi?id=830 Summary: ??iptables????????? Product: iptables Version: unspecified Platform: All OS/Version: RedHat Linux Status: NEW Severity: major Priority: P5 Component: iptables AssignedTo: netfilter-buglog at lists.netfilter.org ReportedBy: higkoohk

Hi; First, sorry if this question is mostly netfilter related, than lartc, but I think you guys may have a your opinion about this. I''m using Linux 2.4.x with netfilter packet filtering / NAT on our front-end firewalls (P500 with 1Gb RAM), which are filtering traffic going to our Public Web Sites. The traffic is growing very fast since several months.. The average traffic filtered by

...work-script network-multiple-bridge) dom0 has 2 interfaces, one internal and an external pings to the destination from domUs works after the Network is unreachable message appear. ip_conntrack table is not full at dom0: # cat /proc/net/ip_conntrack | wc -l 1744 # cat /proc/sys/net/ipv4/netfilter/ip_conntrack_max 65536 netperf checks looked ok, showing around 2G throughpout between domUs and between dom0 routes are ok in all the 4 nodes, pointing at dom0 "internal" address. The most annoying thing is that one domU does not show the problem and the other 3 do....anyone can point any method to c...

Hello, I have found the sysctl setting to net.ipv4.netfilter.ip_conntrack_max value reset everyday, may I know is there a way to set it permanently? I have set it to 150000, but it reset to 65535 in few hours. The running Centos is version 4 and kernel version is 2.6.9-55.0.12.ELsmp. Do I need to reboot to have it set permanently? It seems that I need to run sysctl -p to...

https://bugzilla.netfilter.org/cgi-bin/bugzilla/show_bug.cgi?id=105 ------- Additional Comments From laforge@netfilter.org 2003-06-24 20:00 ------- Did you try to enlarge your connection tracking table? (Pleae read the FAQ) Do the /proc/net/ip_conntrack entries look plausible, or are there lots of entries with unreasonably high timeout? ------- You are receiving this mail because: -------

https://bugzilla.netfilter.org/cgi-bin/bugzilla/show_bug.cgi?id=105 laforge@netfilter.org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution| |LATER ------- Additional Comments From

See, /proc/sys/net/ipv4/ip_conntrack_max try to change value from this file to a higher value. It may happen. If it doesn''t help go keep mailing me :). No i didn''t overcome my problem yet. But I''m close. I did what i sad in the first line of my mail and it help for some time. I think htb has some kind of defect...