Kernal Ip Logger
Linux Netfilter iptables -- Re: nf_ct_ftp: dropping packet
Marian Marinov wrote: > Hello, > I'm working for a fairly large shared hosting provider. Recently we decided to > upgrade the kernel of our servers to 2.6.33. However, during the testing phase > we started to see these messages in the logs: > > Mar 18 07:52:26 serv01 kernel: nf_ct_ftp: dropping packetIN= OUT=eth0 > SRC=212.212.212.12 DST=204.16.203.11 LEN=53 TOS=0x10 PREC=0x00 TTL=64 ID=21858 > DF PROTO=TCP SPT=21 DPT=47282 SEQ=1836474396 ACK=1448911219 WINDOW=23 RES=0x00 > ACK PSH FIN URGP=0 > > We don't have iptables LOG rules, this is generated directly from the kernel. > > 212.212... is not a real IP I have substituted it. > > Our kernel is 2.6.33 with GRsecurity patch. > > We don't have any problems with the ftp service, however the messages in the > log files are annoying. > > Can someone tell me what can cause those? The helper decided to drop a packet. This is usually cause by partial FTP command matches, which can't be handled. > > > My current thoughts are to remove the printk from the kernel. But is there a > better solution? > If you don't use logging, unload the ipt_LOG module. -- To unsubscribe from this list: send the line "unsubscribe netfilter" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.
Kernal Ip Logger - Bookshelf
Learning UNIX for Mac OS X Panther
... default to accept, logging disabled Sep 24 22:38:47 localhost kernel: IP firewall loaded When you're done, use Control-C to get a new command prompt. ...OpenSUSE 11.0 and SUSE Linux Enterprise Server Bible
Output of route -n bible:/usr/sbin # route -n Kernel IP routing table In this example, ... loggers Destination Gateway Genmask Flags Metric Ref Use Iface ...Advanced Linux networking
... interfaces="ipsec0=eth0 ipsecl=pppl" The kl i psdebug and pi utodebug options set the logging options for the Kernel IP Security (KLIPS) kernel features ...Hardening Linux
The previous tcp() source statements specify 192.168.0.1 as the IP address ... To add kernel logging to syslog-NG, adjust your source{} statement to include ...SUSE Linux10 Bible
Listing 6-1: Output of route -n bible:/usr/sbin # route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.131.0 ...Detect Articles Directory
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