07-21-2011
Getting Iptables New not syn log message more time
Hi guys,
I having Iptables log message. It's coming more time. It's can't handle to linux squid.
Firewall -> 192.168.102.2 <iptables>
squid -> 192.168.102.2 <transparent proxy (port 3128)>
error ->
Jul 21 23:58:16 mig [559289.955344] New not syn:IN= OUT=eth0 SRC=192.168.102.2 DST=192.168.102.96 LEN=1500 TOS=0x00 PREC=0x00 TTL=64 ID=53063 DF PROTO=TCP SPT=3128 DPT=1638 WINDOW=11680 RES=0x00 ACK URGP=0
<This message getting all 192.168.102.0/32 network ip's>
getting above message more and move time. can't handle. full network getting slow .squid bandwidth not utilize. but internet slow.
9 More Discussions You Might Find Interesting
1. Programming
Hi,
I'm trying to create a RAW TCP SYN packet and send it from one Linux machine to another. I know the packet I have created is well formed and is received by the peer.
Now what I want is to get an ACK for my SYN. I want the peer's Network protocol stack to send me an ACK for that. I know... (17 Replies)
Discussion started by: zampya
17 Replies
2. Linux
Hi all,
A security scanner has been done on a linux server and have found that
The remote host does not discard RCP SYN packets which have the FIN flag set.
It tells that I need to request a patch which I haven't found yet.
I have Red Hat Linux release 7.0 (Guinness)
Kernel 2.2.16-22... (2 Replies)
Discussion started by: bert.n
2 Replies
3. Shell Programming and Scripting
suppose I have data in a log file in the below format
date|time|name|email|address|SSN
date|time|name|email|address|SSN
date|time|name|email|address|SSN
is it possible to create a search engine which takes input as three filters out of which two filters should be optional?
say i give... (4 Replies)
Discussion started by: wannalearn
4 Replies
4. UNIX for Advanced & Expert Users
Please tell me details about terms FIN, ACK, SYN, RST; used in TCP based communication. Also tell me any RFC or other document which tell me details about these terms. (1 Reply)
Discussion started by: mansoorulhaq
1 Replies
5. Shell Programming and Scripting
Friends
I have to redirect STDERR messages both to screen and also capture the same in a file.
2 > &1 | tee file works but it also displays the non error messages to file, while i only need error messages.
Can anyone help?? (10 Replies)
Discussion started by: vikashtulsiyan
10 Replies
6. UNIX for Dummies Questions & Answers
Hi guys,
I have a script that call another, the other displays de message and I can print directly to the flat file, but in one command I am searchig that this message can be displayed in the screen and in the flat file in one command.
I am doing something like this:
var=$(./Example.sh)... (2 Replies)
Discussion started by: pipoca
2 Replies
7. UNIX for Dummies Questions & Answers
I am using vim version 7.1.314.It don't have syn on.Is there any plug in available for syn on or I have to update the version. (2 Replies)
Discussion started by: karthigayan
2 Replies
8. Solaris
Can anybody please tell me how I can figure out on a solaris server how long it would take a TCP SYN request to timeout before it gets a SYN_ACK back?
Thanks, (3 Replies)
Discussion started by: Pouchie1
3 Replies
9. Shell Programming and Scripting
How can view log messages between two time frame from /var/log/message or any type of log files.
when logfiles are very big and especially many messages with in few minutes, I would like to display log messages between 5 minute interval.
Could you pls give me the command? (1 Reply)
Discussion started by: johnveslin
1 Replies
LEARN ABOUT DEBIAN
cisco_ios2dlf
CISCO_IOS2DLF.IN(1) LogReport's Lire Documentation CISCO_IOS2DLF.IN(1)
NAME
cisco_ios2dlf - convert cisco logs to dlf format
SYNOPSIS
cisco_ios2dlf
DESCRIPTION
This script expects syslog-type logs from a CISCO IOS router on stdin. These look like e.g.
Jul 3 00:00:39 router 40108: 4d09h: %SEC-6-IPACCESSLOGP:
list FR_VA_in permitted udp 192.168.19.1(137) (Serial0/0.2 DLCI 120)
-> 192.168.19.255(137), 2 packets
Jul 3 00:02:39 router 40109: 4d09h: %SEC-6-IPACCESSLOGP: list FR_VA_in
permitted udp 192.168.80.42(138) (Serial0/0.2 DLCI 120) ->
192.60.60.148(138), 1 packet
Jul 3 00:02:39 router 40110: 4d09h: %SEC-6-IPACCESSLOGDP: list FR_VA_in
permitted icmp 192.168.80.82 (Serial0/0.2 DLCI 120) -> 149.1.1.1 (8/0),
1 packet
or
Aug 19 04:02:34 gateway.foo.bar 218963: Aug 19 04:02:32.977:
%LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:1, changed state
to down
Aug 19 04:02:34 gateway.foo.bar 218964: Aug 19 04:02:33.262:
%ISDN-6-DISCONNECT: Interface BRI0:1 disconnected from 172605440 acme,
call lasted 42 seconds
Aug 19 04:02:35 gateway.foo.bar 218965: Aug 19 04:02:33.266:
%LINK-3-UPDOWN: Interface BRI0:1, changed state to down
Aug 19 04:02:38 gateway.foo.bar 218966: Aug 19 04:02:36.103:
%SEC-6-IPACCESSLOGP: list 102 denied tcp 100.198.139.148(4652) ->
100.193.176.49(80), 1 packet
Aug 19 04:02:45 gateway.foo.bar 218967: Aug 19 04:02:43.543:
%ISDN-6-LAYER2DOWN: Layer 2 for Interface BR0, TEI 86 changed to down
Aug 19 04:02:53 gateway.foo.bar 218968: Aug 19 04:02:51.471:
%SEC-6-IPACCESSLOGP: list 102 denied tcp 100.74.103.1(2162) ->
100.193.176.98(80), 1 packet
The outputted dlf files look like:
994118619 permitted icmp 192.168.80.9 - Serial0/0.2 DLCI_120
192.168.19.1 - 1
994118619 permitted udp 192.168.19.1 138 Serial0/0.2 DLCI_120
192.168.19.255 138 1
EXAMPLES
To process a log as produced by Cisco IOS:
$ cisco_ios2dlf < cisco.log
cisco_ios2dlf will be rarely used on its own, but is more likely called by lr_log2report:
$ lr_log2report cisco_ios < /var/log/cisco.log
AUTHORS
Francis J. Lacoste based on initial code by Joost Bekkers <joost@jodocus.org>
VERSION
$Id: cisco_ios2dlf.in,v 1.8 2006/07/23 13:16:35 vanbaal Exp $
COPYRIGHT
Copyright (C) 2001 Joost Bekkers <joost@jodocus.org> Copyright (C) 2002 Stichting LogReport Foundation <logreport@logreport.org>
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program (see COPYING); if not, check with
http://www.gnu.org/copyleft/gpl.html.
Lire 2.1.1 2006-07-23 CISCO_IOS2DLF.IN(1)