01-05-2016
You're saying that every once in a while you cannot access machines across your own LAN? But it works most of the time?
When you are trying to make a local connection what utility/command are you using? What network protocol? And when the connection fails, what error does it give?
I understand your point that remote inbound access still works whilst this problem is going on.
---------- Post updated at 09:08 PM ---------- Previous update was at 09:05 PM ----------
When local connections are failing are you using the nodename or the target ip address in the command?
---------- Post updated at 09:09 PM ---------- Previous update was at 09:08 PM ----------
Oh, and can you please tell us all what O/S's we are talking about here.
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LEARN ABOUT DEBIAN
proxychains
proxychains(1) proxychains(1)
NAME
ProxyChains - redirect connections through proxy servers
SYNTAX
proxychains <program>
DESCRIPTION
This program forces any tcp connection made by any given tcp client to follow through proxy (or proxy chain). It is a kind of proxifier.
It acts like sockscap / premeo / eborder driver (intercepts TCP calls).
This version (2.0) supports SOCKS4, SOCKS5 and HTTP CONNECT proxy servers. Auth-types: socks - "user/pass" , http - "basic".
When to use it ?
1) When the only way to get "outside" from your LAN is through proxy server.
2) When you are behind restrictive firewall which filters outgoing connections to some ports.
3) When you want to use two (or more) proxies in chain:
like: your_host <--> proxy1 <--> proxy2 <--> target_host
4) When you want to "proxify" some programs with no proxy support built-in (like telnet).
5) When you dont want to pay for eBorder / premeo socks driver :)
Some cool features:
* This program can mix different proxy types in the same chain
like: your_host <-->socks5 <--> http <--> socks4 <--> http <--> target_host
* Different chaining options supported like: take random proxy from the list. or : chain proxies in exact order or :
chain proxies in dynamic order (smart exclude dead proxies from chain)
*You can use it with any TCP client application, even network scanners. yes, yes - you can make portscan via proxy (or chained proxies) for
example with Nmap scanner by fyodor (www.insecure.org/nmap).
proxychains nmap -sT -PO -p 80 -iR (find some webservers through proxy)
NOTE: to run suid/sgid programs(like ssh) through proxychains you have to be root
FILES
proxychains looks for config file in following order:
./proxychains.conf
$(HOME)/.proxychains/proxychains.conf
/etc/proxychains.conf
see more in /etc/proxychains.conf
EXAMPLES
To run this program the standard way type:
proxychains telnet targethost.com
in this example it will run telnet through proxy(or chained proxies) specified by proxychains.conf
COPYING
proxychains is distributed under the GNU General Public License. (GPL 2.0 or greater).
AUTHORS
Net Creature, Proxy Labs
<http://proxychains.sourceforge.net>
<Net Creature> 2.0 proxychains(1)