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arp reply is not processedview story

http://serverfault.com – My eth0 interface does not process a legitimate arp reply. When I try to ping a host, I see arp request and reply with tcpdump from the host I try to ping from, but ip neigh says that there is a failure. This has to do something with my bridge configuration, set up by quantum. I experience this when I have the following in /etc/network/interfaces: auto eth0 iface eth0 inet dhcp I do get an IP i (HowTos)

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ConfigServer Firewall 6.01 Is Available for Downloadview story

http://news.softpedia.com – ConfigServer Firewall, an SPI iptables firewall that is straightforward, easy and flexible to configure and secure, with extra checks to ensure smooth operation, is now at version 6.01. Highlights of ConfigServer Firewall 6.01: • Ensure all binaries are called with their full paths for the scheduled Server Security Check reports; • csf -u/-uf/--update and -c/--check are now allowed whe (IT news)

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Can not connect to the SSH no matter whatview story

http://forums.fedoraforum.org – I have server behind router and i have forwarded all ports onto server. I have done the following so far: 1)SSH is running 2)I can connect to it from the server itself 3)I can connect (using putty) from coputer, that is behind same router using both internal AND external ip 4)selinux is disabled 5)iptables service is disabled 6)router firewall disabled 7)fedoras firewall is configured (HowTos)

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Webmin setup on CentOS 6.3view story

http://unix.stackexchange.com – I installed Webmin (based on Installing the RPM) for CentOS 6.3 running on virtual box. The package was installed successfully but when I open home.centos:10000 it doesn't open up. My internet is fine. I have opened ports of iptables but not working. Also tried as given on Webmin website and did iptables file entries for firewall but still not opening up via my web browser. (HowTos)

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can't find a way to forward in iptables for specific mac addressview story

http://serverfault.com – I use a linux Centos 6.3 as an Internet gateway with NAT. I want to allow a specific host to have access to Internet, but not with IP address, because IP may change due to dhcp, and use a rule for a specific mac address. I used the following but it does not work iptables -t nat -A POSTROUTING -o $INTERNETDEVICE -j MASQUERADE iptables -A INPUT -i $INTERNETDEVICE -m state --state ESTABLISHED,RELA (HowTos)

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Cannot connect after iptable -Fview story

http://serverfault.com – I want to add whitelist in my system using iptables. So I searched the web and find this: iptables -I INPUT -s 10.0.0.0/8 -j ACCEPT iptables -I INPUT -s 127.0.0.1/8 -j ACCEPT iptables -I INPUT -s 192.168.0.0/16 -j ACCEPT iptables -P INPUT DROP and it really works. So I fire iptable -F to delete all rules, then I cannot connect to this server anymore. (HowTos)

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Could not open port for activeMQ broker on CentOSview story

http://serverfault.com – here is problem: We have virtual machine on VMware ESXi with CentOS 6.3 system (devserver). To access ports on virtual machine we do port forwarding. We deploy application in tomcat on devserver (Tomcat7,JDK7) iptables dispabled. After deployment, ActiveMQ start to listen on 60001 port. (HowTos)

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Host to VM networking and VM to Host networkingview story

http://forums.fedoraforum.org – I'm running a Fedora 17 desktop system that I've decided to put an OEL 6 virtual machine on. I built the VM first with virtual network NAT the default but discovered that only the host could communicate with it. After reading the available documentation (which I probably should have done first) I found that I needed to use a bridged network on the host so the VM would be available on my LAN. (HowTos)

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Problems with multicasts in "iptables"view story

http://serverfault.com – My question is related to multicasts and iptables. I want to allow ICMP and IGMP multicasts from the local VLAN 192.168.1.0/24 as well as from 0.0.0.0 on my CentOS machine, so I added the following rules to my inbound chain: # ACCEPT - Multicast 224.0.0.1 from current VLAN as well as 0.0.0.0 # -- ICMP iptables -A IP-INPUT -s 192.168.1.0/24 -d 224.0.0.1 -m pkttype --pkt-type multicast --protocol (HowTos)

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Iptables NAT forwarding - how to block all but one IPview story

http://serverfault.com – I've got a small network, two interfaces, eth1(local, internal range 192.168.150.0/24) and eth0 external, static ip. I wish to set up nat forwarding for the internal network but allow them to only connect to an external server 209.60.x.x and reject connections to all other external ips. How do i only allow forwarding/nat to ip 209.60.x.x ? (HowTos)