I have 2 different networks: the first one is gateway machine (eth0), and the second is a private machine (eth1). So, I've configured the iptables and forwarding stuff and when I try to ping [URL]... on the gateway machine, it works, while it doesn't work on the private network.
View 7 RepliesI have 2 different networks: the first one is gateway machine (eth0), and the second is a private machine (eth1). So, I've configured the iptables and forwarding stuff and when I try to ping google.com on the gateway machine, it works, while it doesn't work on the private network. Note: I am using VmWare 7. I need your quick assistance about this issue.
View 2 Replies View Relatedmy problem is following: I'm running a bridged OpenVPN on my Debian. If the service is running, everything works fine: local and Internet, ftp, mailing from in and outside etc. But, when stopping OpenVPN, sending mails from inside (LAN) fails: I cannot reach smtp (postfix) listening on port 465. And even reaching mailboxes using IMAP gets horribly slow eg. in Thunderbird. Here is my firewall.sh script.
Quote:
#!/bin/sh
echo "
IPTABLES FIREWALL inicializalasa - szures"
# Enter the designation for the Internal Interface's
INTIF="eth0"
[Code].....
I setup squid with transparent proxy and its working, however, when I reboot the server, the proxy server doesnt work unless I run the following.
Code: # squid server IP
SQUID_SERVER="192.168.1.1"
# Interface connected to Internet
INTERNET="eth0"
# Interface connected to LAN
LAN_IN="eth1"
# Squid port
SQUID_PORT="3128"
[Code]...
I was testing my authorized_hosts setup, so deleted my local private key. I then successfully ssh'd into my remote server using RSA authentication. I was expecting to get a permission denied, seeing as there is no longer a private key to guarantee I'm me. Guessing I'm misunderstanding something fundamental. Anyone know what's going on? It doesn't look like ssh-add is holding my private key:jake@clyde:~$ sudo pkill -9 ssh-agent
View 2 Replies View RelatedI use iptables firewall (v1.4.1) installed on FC8. I'm trying to limit the inflow traffic for the port 1723 to certain MAC addresses. To experiment with the mac option, I've written the following iptables rule:
Quote:
iptables -A INPUT -m -mac --mac-source 10:08:08:08:08:10 -j ACCEPT
It didn't work. It gave me this error message:
Quote:
iptables v1.4.1: Couldn't load match `-mac':/usr/local/libexec/xtables/libipt_-mac.so: cannot open shared object file: No such file or directory
Try `iptables -h' or 'iptables --help' for more information. Does that mean the mac module wasn't installed/enabled?
I am new with IP tables stuff and i have a problem....
i have a pc Contain a fedora OS and i want to make a small network (4 PCs Contain XP OS) and using the pc of fedora OS as a firewall
i want to Prevent the ping (i think it called(ICMP)) in the privat network and prevent one of the PCs from Browsing Internet(prevent port 80 and 81 as i think)
and i still don't know how to make the Internet go Through the firewall to the private network...
note: WAN = eth0
LAN = eth1
I have users using Windows XP, Windows 7, Linux (Fedora) and Mac. They all are in a single private network and all access internet through a Linux (RHEL5) system in which Squid acts as gateway. The same is true with my branch offices too except that private network is different and gateway system uses Fedora 9 instead of RHEL5. All the branch offices are connected through point to point leased lines with the head office for file transfer.
My requirement is this: I have a web server located at head office. Presently I am able to access this server from my branch offices through internet. I would like to access this server from branch offices through leased lines. This too I am able to access if I do routing in users system. The file transfer is taking place through one to one system at two ends by creating static routing in those systems.
Suppose that I am in a private network of computers (say each having ip addresses 192.168.. ). Some of the machines( we have no information regarding their ip, name and no physical access to the servers) in the network are connected to internet and they run an http proxy at some port say 3128. Is there a program which can be run on Windows or Linux which will give me the list of machines(ip addresses and ports if possible) acting as proxy servers?
View 1 Replies View RelatedI'm working on a Soekris net4801 that is running an unknown distro of Linux. The kernel is 2.4.29, and iptables is v1.3.4.
I can't work out how to save the iptables. I searched the whole system for files/folders containing the name "iptables" and got 3 results:
/user/local/lib/iptables
/sbin/iptables
/lib/iptables
I've tried iptables save, iptables-save and iptables save active.
"iptables save" and "iptables save active" give me an invalid argument error. "iptables-save" isn't a valid command. "iptables --help" gives me a list of valid switches, none of which have to do with saving.
how I can save the iptables?
I have openSUSE 11.2 installed and i need to create a gateway server that allows virtual private network connections. I want to play with my friends some lan games, but we are in different networks, so i want to create this gateway server so we can connect with VPN clients to this server and play freely.
View 7 Replies View RelatedI recently installed a new Ubuntu PC that runs iptables and PSAD. I had the same script on another Ubuntu PC, but when I copied the script onto the new PC, I got this error. I don't remember where I found the tutorial for this, all I know is that this is the script (Edited for my usage):
Code:
#!/bin/bash
# Script to check important ports on remote webserver
# Copyright (c) 2009 blogama.org
# This script is licensed under GNU GPL version 2.0 or above
[code]....
Safe.txt contains:
Code:
127.0.0.1
192.168.1.8
192.168.1.1
98.200.58.73
192.168.0.1
And the error message generated is:
Code:
root@NETWORK-SERVER:/var/ddosprotect# ./ipblock.sh
' not found.4.4: host/network `127.0.0.1
Try `iptables -h' or 'iptables --help' for more information.
' not found.4.4: host/network `192.168.1.8
[code]....
i've installed it on my parents old computer, mostly for downloading. But wired internet did work all the time but then i had to reset our router because of some problems and now it doesn't work anymore! But the strange thing is, if i put the cable on my own laptop with windows on it, then it works as normal.
So i guess its some kind of DNS problem, but i'm very new with ubuntu and also not so good with computers. Our network is simple just an modem connected to an router: Sitecome WL-341.
I have two simultaneous active mobile connections through my two mobile phones and USB data cables. Yet I can only send/receive with one connection.Each of the phone modems have a node in /dev, namely ttyACM0 and ttyACM0. So the modems are detected correctly.After setting up two dial-up connections with the two modems I have two ip's. Ifconfig-a confirms this:
ppp0 Link encap:Point-to-Point Protocol
inet addr:10.10.219.60 P-t-P:10.6.6.6 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
[code]....
The main thing preventing me from going Linux although I have it installed in a multi-boot is the probelm I have with Reconnecting the Network (eth0)
If I reboot everything is fine and I am automatically connected to internet via my Ethernet_NAT_router/Homeplug_PowerLine/Cable_Router (using DHCP)
But if I manually disconnect the Network using the tray icon, or through the terminal, when I reconnect the Network Manager says I am reconnected but actually I am not connected to the internet. I can load my Cable Routers configuration page but pages beyond that in the outside world are accessible no longer...
To regain access I have to reboot.
The reason this is important for me is that I reckon if I could get this sorted then if I put the laptop to sleep it will will wake up and reconnect.
As it is using Linux sleep function is unworkable unless I don't mind losing internet.
I am determined to get this sorted eventually as I feel sure there must be a solution. My laptop isn't new but is a good workhorse.
Dell Inspiron 4100 / OpenSUSE Linux 11.2 Gnome
I'm trying to get my vsftp server to run. When ssl is disabled it works pretty fine, but after turning on I get the following error:
[Code]...
just downloaded Chromium, but the x button for closing a tab doesn't work. How can i fix it?
View 7 Replies View RelatedI installed Ubuntu10.04, It cannot driver Wired network and wireless. Later I installed linuxMint9, wireless is ok, but wired network doesn't work. I am sure the lan cable is ok. It works in Windows.
View 3 Replies View RelatedI have recently upgraded to 10.04 and subsequently to 10.10. I have a network printer Lexmark C530dn. Before the upgrade to 10.04 it work OK. After the upgrade i have this problem: When i print something it goes right to completed jobs, without an error and without printing. My user is allowed to print, I checked that.
this is from the access log:
localhost - - [08/Nov/2010:20:38:58 +0100] "POST / HTTP/1.1" 200 253 Create-Printer-Subscription successful-ok
localhost - - [08/Nov/2010:20:39:10 +0100] "POST /printers/Lexmark-C530 HTTP/1.1" 200 205765 Print-Job successful-ok
When i print the self-test page, it prints fine, so I assume the problem's in the system rather than the printer.
what is the command to restart the network services? ive forgotten i think it uses -hup switch though. about 1 in 20 boots on my desktop ubuntu system results in the system insisting its no longer on a network yet has a fully functioning network card. a reboot always fixes the issue but that doesnt seem like a long term solution to me. If I ping a neighbouring system I get nothing. (sent packet count increases in ifconfig) If I ping from a neighbouring system back to my desktop I get nothing (no change in packet count) I can bring down and back up the network interface with no results. A sniffer shows the system definitely isnt sending anything out Everything worked previous boot and will work again after a reboot.
View 2 Replies View Relatedi noticed that all files can be seen by another computer if the drive is accessed
can I stop this? can i set a private folder?
we have here a few openSUSE-machines (some 11.1 and 11.2) which mounts their /home from a NFS-Server and imports the users via NIS. I now wanted to use X-Forwarding via SSH, but that doesn't work with NIS-Users.On my machine I use Gnome and my XAUTHORITY-Variable points to /var/run/gdm/auth-for-bup_deg-E3TMSz/database
Why isn't the default ~/.Xauthority-File used for my cookies? What do I have to change to get X-Forwarding in my Setup running?
i have huawei usb stick modem, i'm connecting to internet with wvdial command, i have configured the file "wvdial.conf" to be able to connect, everything works fine i guess but the update applet still show me the message
Code:
Unable to check whether updates are available
connect to the internet and connection manager too .. it tell me i'm not connected, i think i must configure my connection in an other way .. but i don't know how ..
I got everything working except any localhost connections from within the server. I've tried to connect using localhost, 127.0.0.1, and dedicated IP from within the server and several CMS sites I have moved over to the server and all the local host connections fail.
View 9 Replies View RelatedI just got a new T400 and installed Ubuntu. Everything is fine and I'm really impressed by this OS. But seems my wireless network is very unstable. Sometimes it just can't connect.
The wireless interface is:
description: Wireless interface
product: PRO/Wireless 5100 AGN [Shiloh] Network Connection
vendor: Intel Corporation
I have been trying to install Xubuntu 9.10 in an old desktop computer (Mobile AMD Duron, 213 Mb RAM) but the mouse doesn't work! Neither the Network connexion... When I boot with an USB (same OS) everything works fine... I can also boot with Puppy Linux (working in other partition) without any problem.
View 4 Replies View RelatedI installed Ubuntu on a machine after erasing everything else and the wireless has never worked. It says that the wireless has already shut down even though it recognizes the wireless network and my other non-linux machines see the network and work fine.
View 1 Replies View RelatedMy desktop PC has 2 NICs. I have Ubuntu on it since several years, and I remember that both eth0 and eth1 used to work. However, I discovered recently that currently only eth0 works, and eth1 is dead, but I don't know why. It's been a while since I've tried eth1, so I have no idea when exactly it broke. I suspect the problem may be related to the fact that the MAC address is incorrect: it is set to 00:00:00:00:00:00, which seems wrong. But I have no idea how this happened...Any idea what might be wrong and how I can fix it? Here is some output which I think is useful:
Code:
peter@cheetah:~$ ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:18:f3:68:42:78
[code]....
I am setting up a publicly exposed ssh server.uld like to require both password and private key. Does anyone know how to configure this
View 4 Replies View RelatedI'm new to Fedora and have a problem with the network manager. Everytime I start Fedora, it does not automatically connect to the default WIFI Browsed Google and just found [URL]..
View 1 Replies View Related