Sponsored Content
Special Forums IP Networking Proxy Server IPtable rules for DNS/http/https traffic for specific hosts only, not working. Post 302899546 by phi0x on Tuesday 29th of April 2014 07:32:13 PM
Old 04-29-2014
yesterday the vps got taken down again due to too many conntrack connections they said again.

I am not sure what logs to look at but when I do netstat -ntulp it shows very few connections when they bring the vps back online. I've monitored all day checking a few times every hour to see how the netstat and the /proc/net/nf_conntrack log shows. Doesn't seem like a crazy amount of connections are being produced. I'd say no more than 1-50 connections, average around 10. Mostly opened connections from dns/proxy from a few of the ip's I have allowed in.

This is no where close to their 25-30k conntrack limit.

Today the server hasn't gone down, the iptable rules are automatically applied upon boot. Shall continue to monitor..
 

8 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

Encrypt traffic between Solaris 8 hosts

I have two Solaris 8 hosts that send data to one another throughout the day. It is a legacy system and the programs used are rdist, rcp and ftp. I have been asked to ensure that the data transferred is encrypted beween the two hosts. My first thought was to replace these commands with ssh.... (2 Replies)
Discussion started by: blp001
2 Replies

2. Shell Programming and Scripting

stripping http and https from a url using sed

I have to write a sed script which removes http and https from a URL. So if a URL is https://www.example.com or Example Web Page, script should return me Example Web Page i tried echo $url | sed 's|^http://||g'. It doesn't work. Please help (4 Replies)
Discussion started by: vickylife
4 Replies

3. Shell Programming and Scripting

http and https

Hi friends, I have a local host http://ss3/cgi-bin/page/page_list.cgi running on apache webserver perfectly well. But suddenly, it stopped working and gave an error "Internet explorer Explorer cannot display the webpage". But when i added https, as https://ss3/cgi-bin/page/page_list.cgi the... (2 Replies)
Discussion started by: nmattam
2 Replies

4. UNIX for Advanced & Expert Users

How iptables directs to localhost in this series of iptable rules

Hello, I have implimented a dansguardian system using dansguardian and privoxy. I borrowed a script from Ubuntu CE that makes it where a firewall program like firehol is not needed and it doesn't need a reconfigure of the proxy settings in browsers to be changed. I really like it that way. All... (7 Replies)
Discussion started by: Narnie
7 Replies

5. Web Development

redirect http to https in apache

i read thru a few article how to do it, but i could not get it to work the way i want it. vi ../httpd.conf Redirect permanent /dev https://servername/portal/ when i type servername, works fine. my goal is to type dev, and it takes me to https://servername/portal/ (4 Replies)
Discussion started by: lawsongeek
4 Replies

6. UNIX for Advanced & Expert Users

redirect http traffic

hi, i have freebsd gateway with ipfw as router. Recently i have setup squid-3.1.10 caching server for my lan. I want to redirect http,https traffic from gateway to linux squid box. below is my setup rl0--->xxx.xxx.xxx.xxx (connected to ISP) rl1 -->192.168.1.0/24 (my lan)... (1 Reply)
Discussion started by: goog
1 Replies

7. Web Development

Mod_rewrite http to https

Hi Team, I have a question on the apache mod_rewrite module. I have a requirement of rewriting only specific url's to https. Requirement below:- want to match a word (test) on the url and if matches then it should rewrite to https. example:- ... (1 Reply)
Discussion started by: arumon
1 Replies

8. UNIX for Advanced & Expert Users

Apache - tcpdump get HTTP and HTTPS Headers

Hello I googled for "tcpdump view HOST http headers" -- that fine However can we do same for HTTPS like after the HTTPS gets decrypted by Apache ? I think this is legitimate on the server where the site is hosted since at some point the Apache itself needs to get the HOST patrameter in... (1 Reply)
Discussion started by: coolatt
1 Replies
IPTABLES-APPLY(8)						  iptables 1.6.1						 IPTABLES-APPLY(8)

NAME
iptables-apply - a safer way to update iptables remotely SYNOPSIS
iptables-apply [-hV] [-t timeout] [-w savefile] {[rulesfile]|-c [runcmd]} DESCRIPTION
iptables-apply will try to apply a new rulesfile (as output by iptables-save, read by iptables-restore) or run a command to configure iptables and then prompt the user whether the changes are okay. If the new iptables rules cut the existing connection, the user will not be able to answer affirmatively. In this case, the script rolls back to the previous working iptables rules after the timeout expires. Successfully applied rules can also be written to savefile and later used to roll back to this state. This can be used to implement a store last good configuration mechanism when experimenting with an iptables setup script: iptables-apply -w /etc/network/iptables.up.rules -c /etc/network/iptables.up.run When called as ip6tables-apply, the script will use ip6tables-save/-restore and IPv6 default values instead. Default value for rulesfile is '/etc/network/iptables.up.rules'. OPTIONS
-t seconds, --timeout seconds Sets the timeout in seconds after which the script will roll back to the previous ruleset (default: 10). -w savefile, --write savefile Specify the savefile where successfully applied rules will be written to (default if empty string is given: /etc/network/iptables.up.rules). -c runcmd, --command runcmd Run command runcmd to configure iptables instead of applying a rulesfile (default: /etc/network/iptables.up.run). -h, --help Display usage information. -V, --version Display version information. SEE ALSO
iptables-restore(8), iptables-save(8), iptables(8). LEGALESE
Original iptables-apply - Copyright 2006 Martin F. Krafft <madduck@madduck.net>. Version 1.1 - Copyright 2010 GW <gw.2010@tnode.com or http://gw.tnode.com/>. This manual page was written by Martin F. Krafft <madduck@madduck.net> and extended by GW <gw.2010@tnode.com or http://gw.tnode.com/>. Permission is granted to copy, distribute and/or modify this document under the terms of the Artistic License 2.0. iptables 1.6.1 IPTABLES-APPLY(8)
All times are GMT -4. The time now is 07:56 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy