Search Results

Search found 861 results on 35 pages for 'ipv4'.

Page 19/35 | < Previous Page | 15 16 17 18 19 20 21 22 23 24 25 26  | Next Page >

• Connecting via ShrewSoft VPN client means no LAN internet access (Windows 7 64 bit) - any advice please?

  - by iwishiknewmoreaboutnetworking

  I have a Windows 7 64 bit desktop machine which is connected to a LAN. I recently installed ShrewSoft VPN client v 2.1.7 on my machine so that I can connect to a license server hosted by my customer. They are running a Cisco VPN server and I originally tried (unsuccessfully!) to use the Cisco VPN client for Windows 64 bit but the default gateway wasn't being configured correctly after loading in my pcf file. Using ShrewSoft I am able to import the same pcf file, and successfully connect to the machine I need to using the VPN client software. The client machine I need to connect to has IP address 1.52.90.33. The problem is that when I am connected to the customer network using the VPN client application (and after a few minutes) I lose my LAN internet connection. I can only presume that this is because, by default the ShrewSoft VPN client application automatically tunnels all traffic through the VPN connection. I know there is an option to switch off the "Tunnel All" option on the Policy tab of the application and enter a Remote Network Resource (to "Include" or "Exclude") as "Address" and "Netmask" IP addresses however I am not sure what I need to enter here. Here is my ipconfig output before connecting to the VPN (with suffixes blanked out): Windows IP Configuration Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : ***.*** Link-local IPv6 Address . . . . . : fe80::8de3:9dbe:393a:33ba%11 IPv4 Address. . . . . . . . . . . : 150.237.13.17 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 150.237.13.1 Tunnel adapter 6TO4 Adapter: Connection-specific DNS Suffix . : ***.*** IPv6 Address. . . . . . . . . . . : 2002:96ed:d11::96ed:d11 Default Gateway . . . . . . . . . : 2002:c058:6301::c058:6301 Tunnel adapter Local Area Connection* 9: Connection-specific DNS Suffix . : IPv6 Address. . . . . . . . . . . : 2001:0:4137:9e76:2cf9:38c4:6912:f2ee Link-local IPv6 Address . . . . . : fe80::2cf9:38c4:6912:f2ee%12 Default Gateway . . . . . . . . . : Tunnel adapter isatap.***.***: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : ***.*** Here is my route print output before connecting to the VPN: =========================================================================== Interface List 11...20 cf 30 9d ec 2a ......Realtek RTL8168D/8111D Family PCI-E Gigabit Ethern et NIC (NDIS 6.20) 1...........................Software Loopback Interface 1 14...00 00 00 00 00 00 00 e0 Microsoft 6to4 Adapter 12...00 00 00 00 00 00 00 e0 Teredo Tunneling Pseudo-Interface 13...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #2 =========================================================================== IPv4 Route Table =========================================================================== Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 150.237.13.1 150.237.13.17 2 127.0.0.0 255.0.0.0 On-link 127.0.0.1 306 127.0.0.1 255.255.255.255 On-link 127.0.0.1 306 127.255.255.255 255.255.255.255 On-link 127.0.0.1 306 150.237.13.0 255.255.255.0 On-link 150.237.13.17 257 150.237.13.17 255.255.255.255 On-link 150.237.13.17 257 150.237.13.255 255.255.255.255 On-link 150.237.13.17 257 224.0.0.0 240.0.0.0 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 150.237.13.17 257 255.255.255.255 255.255.255.255 On-link 12

  Read the article

• Cannot redirect ip traffic with iptables to new ip on linux centOS

  - by Kiwi

  today I able to migrate some of the game servers to another server and needed some help to redirect the traffic from old ip to the new one. SERVER1 1.1.1.1 ----- (internet ) ----- SERVER 2.2.2.2 I asume to use iptables to perform this, for that used this rule on my centOS box in the server1. /etc/sysctl.conf: net.ipv4.ip_forward = 1 iptables -t nat -A PREROUTING -p udp --dest 1.1.1.1 --dport 27015 -j DNAT --to-destination 2.2.2.2:27015 iptables -t nat -A POSTROUTING -j MASQUERADE iptables -t nat -A POSTROUTING -d 2.2.2.2 -p udp --dport 27015 -j SNAT --to 1.1.1.1 But the client cannot connect to the server from the old ip, the redirection don't started.

  Read the article

• Wireless is connected but no internet when PC Turns on

  - by mhesabi

  I have a PC that is connected to ADSL Modem router (linksys WAG54g2) directly via Ethernet cable And a laptop and also other devices such as another laptops and smarth phones. However when I turn On the PC or turn it off, some strange problem happens. My wireless network seems connected on laptop but there is no internet activity and can't open a webpage until I turn router off and on again manually. (other devices including the PC itself can't use the internet either) My router configured this way: Encapsulation: RFC 2516 PPPoE Multiplexing: LLC DHCP Server: Enabled and network sharing center IPv4 configuration is obtain IP address automatically How Can I fix this issue?

  Read the article

• iptables - drop all HTTP(S) traffic but from CloudFlare

  - by Martin

  I would like to allow only HTTP(S) traffic coming from CloudFlare. In that way attackers cannot attack the server directly. I know CloudFlare is not mainly a DDoS mitigator, but I would like to try it either way. I'm currently only having access to iptables (ipv4 only), but will try to install ip6tables soon. I just need to have this fixed soon. (we're getting (D)DoSed atm.) I was thinking about something like this: iptables -I INPUT -s <CloudFlare IP> --dport 80 -j ACCEPT iptables -I INPUT -s <CloudFlare IP> --dport 443 -j ACCEPT iptables -I INPUT -p tcp --dport 80 -j DROP iptables -I INPUT -p tcp --dport 443 -j DROP I know that CloudFlare has multiple IPs, but just for an example. Would this be the right way?

  Read the article

• Using Hamachi VPN to connect to Linux VM at home

  - by Cameron Verotti

  I have a CentOS 5.10 Linux box at home running on VMWare, with Windows 2008 as the host. I have set up a Hamachi VPN so that I can connect to the Host server from work, I attempted to add a second VNIC to the VM and bridged it to the hamachi Network Interface. I spun up the VM and checked eth1 with ifconfig and its throwing me a ipv6 address not a ipv4. I want to hook this VM up so that I can run a ssh command from work to the VM. MY network at home is all on Local 198.168.. hence the need to make a VPN network like Hamachi. I cannot seem to find anything that tells me or helps me with tunneling my Linux VM via Hamachi. Any help would be fantastic!

  Read the article

• NFS compound failed for server foosrv: error 7 (RPC: Authentication error)

  - by automatthias

  I'm setting up an Ubuntu NFS server with a Solaris 10 client. The basic configuration looks okay to me, and it was also working for some time. I'm getting an "RPC: Authentication error" message on the client. server /etc/exports: /export/opencsw-future 192.168.3.0/24(rw,nohide,insecure,no_subtree_check,async) /export/opencsw-current 192.168.3.0/24(rw,nohide,insecure,no_subtree_check,async) $ ls -ld /export/opencsw-current drwxr-xr-x 7 maciej maciej 4096 2012-02-05 14:55 /export/opencsw-current client $ grep opencsw /etc/vfstab foosrv:/opencsw-current - /export/opencsw-current nfs - yes - $ sudo mount /export/opencsw-current NFS compound failed for server foosrv: error 7 (RPC: Authentication error) (...repeated...) nfs mount: mount: /export/opencsw-current: Permission denied My server host name resolves to both IPv4 and IPv6 addresses.

  Read the article

• Ping6 fail on linux

  - by michelemarcon

  I have 2 linux box configured with IPv4. I have tried adding IPv6 to them. I have issued this commands on box1: ip -6 addr add fd32:2d7f:f3c1::1/48 dev eth0 And I get this: inet6 addr: fd32:2d7f:f3c1::1/48 Scope:Global Then I have issued this command on box2: ip -6 addr add fd32:2d7f:f3c2::1/48 dev eth0 Back on box1 (command/response): ping6 fd32:2d7f:f3c1::1 is alive! ping6 fd32:2d7f:f3c2::1 ping6: sendto: Network is unreachable Why doesn't box1 ping box2 (of course, also box2 can't ping box1)?

  Read the article

• Deactivate SYN flooding mechanism

  - by mlaug

  I am running a server that is running a service on port 59380. There are more than 1000 machines out there connecting to that service. Once I need to restart the service all those machines are connecting at the same time. That made some trouble as I have seen that log entry in kern.log TCP: Possible SYN flooding on port 59380. *Sending cookies*. Check SNMP counters. So I changed sysctl net.ipv4.tcp_syncookies to 0 because the endpoints to not handle tcp syn cookies correctly. Finally I restarted my network to get the changes in production Next time I had to restart the service, the following message was logged TCP: Possible SYN flooding on port 59380. *Dropping request*. Check SNMP counters. How can I prevent the system for doing such actions? All necessary counter measures are done by iptables...

  Read the article

• Is there a Linux kernel boot parameter to configure an IPv6 address?

  - by aef

  I know there is a parameter named ip which lets you configure IPv4 addresses on the Linux kernel through the boot loader. That looks like the following: ip=192.0.2.1::192.0.2.62:255.255.255.192::eth0:none I'm looking for an equal parameter for IPv6 configuration. I couldn't find anything about this in the kernel documentations. Update: Because of a lot of you asked why I would need this: The idea to use a kernel configuration came up related to this problem. I suspect the regular boot-up interface configuration is not done, because the interfaces are already up. The reason for this could be that I'm using a pre-boot environment with a Dropbear SSH server to allow me to unlock my encrypted root partition. The IP addresses for this environment are configured through GRUB with the ip= parameter. There is no DHCP or Router Advertisement available on that Ethernet segment and as this is the uplink segment provided by a large hosting company, there is no way to change that fact.

  Read the article

• Windows can't communicate with the device or resource (primary DNS server)

  - by David

  I am using Windows 7 Home Premium and am connecting to the Internet through Homeplug. When I connect and enable the LAN the status shows that I'm connected (the IPv4 shows connected), but after like 20 seconds it changes to No Internet connection. Even when it says I'm connected I can't connect to the Internet. My browser (Firefox) shows Server Not Found. When I run the troubleshooter it says "Windows can't communicate with the device or resource (primary DNS server)." What could be the problem, and how do I fix it?

  Read the article

• Problem communicating with one machine in my domain

  - by pmaroun

  Context: 3 HyperV guest images (DC, SQL, MOSS) 1 internal network 1 domain (PJM.COM) DC: 192.168.0.192 SQL: 192.168.0.153 MOSS:192.168.0.160 I am having communication problems from/to the MOSS machine from the other two. I removed the MOSS machine from the domain and cannot rejoin. When I ping the MOSS machine from DC, I get the following response: Pinging MOSS [192.168.0.152] Reply from 192.168.0.192 Destination host unreachable (4 times) When I ping the MOSS machine from SQL, I get the following response: Pinging MOSS [192.168.0.152] Reply from 192.168.0.153 Destination host unreachable (4 times) From the MOSS machine, I can ping the server names, however I cannot ping the FQDN. When I ping from the DC and SQL machines, I get IPv4 addresses. When I ping from the MOSS machine, I get IPv6 addresses. I'm a developer and don't know what steps to take to resolve this issue. Please help!?

  Read the article

• Can't connect to the internet in Windows Vista

  - by Kola

  I have a Windows Vista computer which i have used for about 2 years without any issues. Recently, i started having problems connecting to the internet with this Vista computer. My other XP Computers are fine and can connect to the Internet. Regardless of wired or wireless connection, i am unable to get the Vista computer connected to the web. The Status remains "Limited" for IPv4 and IPv6. It also shows unidentified Public Network, and is able to connect to the router. However, there's a disconnection between the router and the internet. Any help will be greatly appreciated, i have been on this for 4 weeks now.

  Read the article

• Citrix Xen VM's lose networking

  - by Ash

  My client has a XenServer 6.0.2 installation with 2 Window Server 2008 R2 virtual machines. Whenever the virtual machines are rebooted they lose their IP settings (IP address, subnet, gateway). Each time after a reboot I need to login to each VM via XenCenter and re-apply the required static IP settings. This causes issues with connected iSCSI drives within each VM - drives need to be reconnected after each reboot. For example, a network adapter has the following settings pre-reboot: Description . . . . . . . . . . . : Citrix PV Ethernet Adapter #0 Physical Address. . . . . . . . . : C6-FB-A2-4F-2C-F3 IPv4 Address. . . . . . . . . . . : 10.101.0.101(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 10.101.0.10 DNS Servers . . . . . . . . . . . : 10.101.0.100 NetBIOS over Tcpip. . . . . . . . : Enabled Post-reboot: Description . . . . . . . . . . . : Citrix PV Ethernet Adapter #0 Physical Address. . . . . . . . . : C6-FB-A2-4F-2C-F3 Autoconfiguration IPv4 Address. . : 169.254.153.174(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.0.0 Default Gateway . . . . . . . . . : DNS Servers . . . . . . . . . . . : 10.101.0.100 NetBIOS over Tcpip. . . . . . . . : Enabled Under XenCenter -- Virtual Network Interfaces, each adapter is set to a static MAC address (i.e. "Use this MAC address"). I have tried the following commands within one VM but this had no effect: netsh winsock reset catalog netsh int ip reset Can someone please help?

  Read the article

• Linux router with diffent gateways for incomming and outgoing connections

  - by nkout

  I have the following topology: LAN Users:192.168.1.2 - 254 (192.168.1.0/24) gateway1: 192.168.2.2/24 used for all outgoing connections of LAN users (default gateway) gateway2: 192.168.3.2/24 used for incoming services (destination NAT, ports 80,443 are forwarded to 192.168.2.1) linux router-server R eth0 192.168.1.1/24: LAN eth1 192.168.2.1/24: WWAN1 eth2 192.168.3.1/24: WWAN2 I want to: route all outgoing traffic coming from LAN and R via 192.168.2.2 route the responses to incoming connections via 192.168.3.2 My config: ifconfig eth0 up 192.168.1.1 netmask 255.255.255.0 ifconfig eth1 up 192.168.2.1 netmask 255.255.255.0 ifconfig eth2 up 192.168.3.1 netmask 255.255.255.0 echo 0 >/proc/sys/net/ipv4/ip_forward route add default gw 192.168.2.2 iptables -t nat -A POSTROUTING -d !192.168.0.0/16 -j MASQUERADE I want to add iptables rule to mark incoming traffic from WWAN2 and send back the responses to WWAN2, while keeping default gateway on WWAN1

  Read the article

• Cisco 1760 T1 Setup

  - by Joseph

  My 1760 has a WIC1-T1 card in Slot 0 and the slot 0 "OK" light is lit. When the router boots it shows that it sees the T1 card. I would like to configure my T1. I received the following details from my ISP: * Removed IP's IP Version: IPv4 Router Interface: edge1.mia1 -- t1-2/1/0:2:13 -- Switch Port: Vlan: WAN Network: 4.59.?.?/30 Level3 Side: 4.59.?.? Customer Side: 4.59.?.? Cust. LAN IPs: 4.59.?.?/27 The problem is that it is not listed under interfaces. I am a noob with IOS, please let me know if you need more details. Thanks.

  Read the article

• WAN and LAN setup for IPv6

  - by neu242

  We just got a IPv6 /48 range (a gateway and an IP address) for our company, but I'm unsure about how to set it up. We use FreeBSD 8.4 (pfSense 2.1) as a router/firewall. Currently we have IPv4 setup with a WAN towards the internet, and a NAT-ed LAN behind it for office PCs. We want to keep the LAN network for security, and we want IPv6 addresses from the /48 for all office PCs (without NAT). The WAN is configured with the IPv6 gateway 1111:2222:3333::1/48 and interface address 1111:2222:3333::2/48. But when it's configured this way, I guess it's impossible to fit the LAN on a /64 within the /48? I believe I should configure the WAN subnet on 1111:2222:3333:1::/64 and the LAN on a subnet like 1111:2222:3333:2::/64. Is this something I can configure myself, or do I have to ask the ISP to configure that routing for me?

  Read the article

• solaris + match the network device name according to IP address

  - by yael

  how to find the device name as ( e1000g2 , e1000g3 , etc ) according to his IP address on Solaris machine for example ifconfig -a | grep 10.106.134.133 inet 10.106.134.133 netmask ffffff00 broadcast 10.106.134.255 ifconfig with grep command view only the line with the IP address , and the device name appears before the IP address so my target is to match the device name according to the IP address on Solaris machine , and then insert the device name in to parameter ( ksh ) please advice? full example: from ifconfig -a ( I get the IP and device name , what I need is to find the device name according to IP address , and insert the device name in to parameter ) e1000g2: flags=201000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4,CoS> mtu 1500 inet 10.106.134.133 netmask ffffff00 broadcast 10.106.134.255

  Read the article

• Network tries to reindentify itself now and then

  - by Don Young

  When the computer starts up it connects itself to the router (ZTE 4G router) automatically, but after I have surfed the web for a while, it tries to identify itself, meaning you get that little blue circle next to the little screen at the corner. When browsing it does not cause any problems, but if I'm streaming a video the video will then stop, I'll have to refresh the page to make the video start again. And if I'm playing a game, LoL for example, the game will freeze for about 2 seconds then continue again (due to lost connection to the internet). I have no virus on my computer, although I had before. I have reset my router, restarted my computer, updated my ethernet driver, checked so that the IPv4 is set on automatic and tried different router channels. I have had this router for a few months and the problem just started recently. Here is the ipconfig screen:

  Read the article

• Time Capsule + Ubee Router?

  - by Charlie

  I can't for the life of me figure this out. I recently had TWC installed in my house, and wanted to disable the NAT and router functions of it. I have a Time Capsule hooked up to it from LAN1 (on the Ubee) to the WAN port on the TC. The problems started occurring here. I figured the settings would be these: Ubee Configuration mode: Bridge DHCP: Off TC IPv4: 192.168.100.2 Subnet Mask: 255.255.255.0 Router Address: 192.168.100.1 DNS Servers: 8.8.8.8, 8.8.4.4 Router Mode: DHCP and NAT But using those settings, my TC says "Double NAT", so I have to change it all around to the default settings of the Ubee using NAT. This leads me to believe bridge mode doesn't actually turn off NAT...

  Read the article

• nat with iptables, re-connecting fail within about 3 minutes

  - by xpu

  i constructed a nat with iptables, as following: echo 1 > /proc/sys/net/ipv4/ip_forward iptables -t nat -I PREROUTING -p tcp --dport 9000 -j DNAT --to xx.xx.xx.xx iptables -t nat -I POSTROUTING -p tcp --dport 9000 -j MASQUERADE service iptables save service iptables restart the configuration worked fine, but there was a problem when i disconnected and tried to reconnect again, connection will be refused within about 2~3 minutes, after that, things go fine again. what was the problem? how do i make it to accept new connection after the old one break?

  Read the article

• IPv6 feature in Network Adaptor is Slowing Internet

  - by Teknophilia

  The past few days, my internet browsing has become very poor. It's not a matter of speed, as a speed test will give at least 15Mbps. It seems as if my laptop has a hard time actually connecting to the sites. I've found a possible culprit, but don't know why it would affect anything: Going to adapter settings and disabling ipv6, but leaving ipv4, my browsing is back to normal. Re-enabling ipv6 brings back the issue. This is strange though, because I have always had ipv6 enabled. Moreover, using sites to test ipv6 compatibility, I fail with ipv6 enabled on my adapter, and pass when it's disabled. Ideas about why this is happening, and how to fix it?

  Read the article

• How to connect another computer to the router

  - by Call Me Dummy

  I already have a Windows 7 PC connected to my NETGEAR WGR614v10 router and I am able to use internet in that computer. Now I need to connect one of my old computer to the router to share the internet. It's also running Windows 7. I already connected it to the router via a CAT-5 cable but I am not able to use internet. The first computer was set up by a technician. Its IP address is 192.168.1.3, and the default gateway is 192.168.1.1. On the second PC, I changed the IPv4 to 192.168.1.4 and default gateway and preferred DNS to 192.168.1.1, but it's not working. What can I do?

  Read the article

• Allow Internet Access with Default Gateway on Windows 7 VPN Server

  - by Hakoda

  I have a Windows 7 box at home (which I'll refer to as Home-VPN) that runs a simple PPTP VPN server. I have a range of 2 IP address (192.168.1.10-192.168.1.11) to give out, although the server is only able to give out one concurrent connection. Ports 1723 & 47 are correctly forwarded to the server. IPv6 is disabled on both Home-VPN and the client. I setup Home-VPN just like this Youtube video: http://www.youtube.com/watch?v=1s5JxMG06L4 I can connect to it just fine but I can't access the Internet when connected to Home-VPN, all outside web servers (eg. google.com, mozilla.org, apple.com) are unreachable. I know I can uncheck "Use Default Gateway on Remote Servers" on the client side under IPv4 settings but that will route all my traffic through my current connection, rather than through the VPN, defeating the purpose of said VPN. Any ideas on how I can fix this?

  Read the article

• UFW blocking webrick on port 3000

  - by t Book

  On a ubuntu 10.0.4 server runs redmine. starting webrick with: ./server webrick -e production -b lvps46-173-79-113.dedicated.hosteurope.de -d makes redmine available in browser. as soon as we enable ufw, webrick can´t be accessed anymore. of course we allowed Port 3000 from anywhere ufw allow 3000/tcp ufw allow 3000/udp also a grep for iptables doesn´t show a deny rule iptables -nL | grep 3000 find the whole iptables output here http://pastebin.com/k6WNqdPU checking lsof -ni tcp:2222 tells me ruby is listening on port 3000 ruby 3457 root 5u IPv4 864846667 0t0 TCP 46.173.79.113:3000 (LISTEN) What else can we check? what´s wrong with the ufw rules for port 3000?

  Read the article

• Automatic DNS population for routable IPV6 addresses

  - by Clint

  In ipv4 I can set my DHCP server to populate DNS with hostnames and IP addresses as clients are found. This works well and clients can resolve these DNS addresses to contact eachother over routed subnets. How can this be done in ipv6 without DHCP? Link Local Multicast Name Resolution can allow clients on the same subnet to discover eachothers hostnames and match them to link-local addresses, but so far I can't find a way for clients to advertise their global or unique local addresses and hostnames to a DNS server to be resolved across subnets.

  Read the article

< Previous Page | 15 16 17 18 19 20 21 22 23 24 25 26  | Next Page >