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  • How do I access the web server on my desktop from my laptop?

    - by Steven
    I'm running Apache on my stationary and I would like to access a website through my laptop. This is some of the Apache config: NameVirtualHost 127.0.0.1:80 <VirtualHost 127.0.0.1:80> ServerName mysite.com DocumentRoot I:/wamp/www/mysite/ </VirtualHost> ServerName localhost:80 <Directory /> Options FollowSymLinks AllowOverride all Order deny,allow Deny from all </Directory> On my laptop I've added the following to the HOSTS file: 10.0.0.3 mysite.com But accessing the page through mysite.com is not very successfull. If I enter the IP address directly, I only get a Forbidden message. What do I need to do in order to get this to work? Update I'm runing WAMPSERVER 2.1 (Apache 2.2.17) Apache is up and running I can ping 10.0.0.3 from laptop I'm not able to ping http://mysite.com from laptop IE gives me a 403 Forbidden - The website declined to show this webpage The only log that get's entries when trying to access the website from my laptop, is access.log. access.log 10.0.0.4 - - [13/Jun/2011:10:14:04 +0200] "GET / HTTP/1.1" 403 202 apache_error.log [Mon Jun 13 10:08:16 2011] [error] VirtualHost localhost:0 -- mixing * ports and non-* ports with a NameVirtualHost address is not supported, proceeding with undefined results UPDATE 2 My apache config has the following entry: AllowOverride all Order Deny,Allow Deny from all Allow from 127.0.0.1 Could it be that this Allow from is stopping other computers accessing the page?

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  • ESXI 5.1 - Unable to trunk to cisco switch

    - by Lance
    I have configured my esxi host vSwitch1 to use the secondary NIC on my VMware host. On vSwitch1 configuration I have set the VLAN to 4095 which specifies to allow all VLANs. If my cisco switch port configuration is set to an access port my server can ping the vlan interface on the switch. If my cisco switch port configuration is set to a trunk, whilst it stays UP UP and CDP information is available, I lose my ping from VMware VM server to the local vlan interface on the switch and I lose any server connectivity to my network. Switch NIC teaming policy to Route based on originating virtual port ID Configuration based on: http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1006628 interface GigabitEthernet0/42 description Host Port switchport trunk encapsulation dot1q switchport trunk allowed vlan 18,220 switchport mode trunk switchport nonegotiate spanning-tree portfast trunk end Output from ESXI CLI esxcfg-vswitch -l: ~ # esxcfg-vswitch -l Switch Name Num Ports Used Ports Configured Ports MTU Uplinks vSwitch0 128 5 128 1500 vmnic0 PortGroup Name VLAN ID Used Ports Uplinks VM Network 4095 1 vmnic0 Management Network 4095 1 vmnic0 Switch Name Num Ports Used Ports Configured Ports MTU Uplinks vSwitch1 128 4 128 1500 vmnic1 PortGroup Name VLAN ID Used Ports Uplinks VM Network 2 4095 1 vmnic1 Any tips welcome!!!

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  • Persistent static route stops working after VPN drops and reconnects

    - by user76157
    I've got a VPN between two networks, one home and one office (A and B). Their subnets are: (A) 192.168.1.0 and (B) 192.168.0.0 The two networks have identical ADSL routers. Unfortunately these can only do dial-out VPN. So I've got a Windows 2008 server on Network B acting as a VPN server (ServerB). Network A's router (RouterA) passes through Network B's router and connects via PPTP to ServerB. RouterA is assigned the static IP 192.168.0.40 on Network B. There's a persistent static route on ServerB telling it to use 0.40 for all requests to Network A's subnet, 192.168.1.0. (route -p add 192.168.1.0 mask 255.255.255.0 192.168.0.40). This enables ServerB to ping all machines on A (and those machines to ping ServerB). The VPN connection occasionally drops (I'm not sure why - it's set to remain always on and seems to drop randomly). This wouldn't be too much of a problem, as it reconnects automatically and quickly, except that when it does reconnect, the static route on ServerB no longer works. Route print (on ServerB) shows that the persistent static route still exists. However a tracert to a machine on Network A doesn't use the static route; it tries instead to use ServerB's default gateway (which is RouterB), and fails to find the machine. Deleting and re-adding the static route fixes the problem - a tracert uses the static route. At the moment, a batch file to delete and re-add the static route is scheduled to run every day. But this is clearly far from an ideal solution! I hope that's not too confusing. Any help would be very much appreciated.

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  • VRF Internet Gateway Multiple External IP's 1 Internal IP to AWS

    - by user223903
    Trying to setup VRF for the first time and its not working for me even though I keep reading everything online. IP's are different to real life. I have an Internet connection which I can ping to my router in the current setup below 195.45.73.22 I have a block of ip addresses 195.45.121.0/27 I want to setup multiple VPN's to AWS so need to have multiple external ip's thus the block of IP addresses. I have setup the 2nd and 3rd IP address but can not ping them from external. Any help would be grateful. Bryan ip source-route ! ip vrf Internet rd 1:1 route-target export 1:1 route-target import 1:1 ip vrf AWSSydney1 rd 2:2 route-target export 2:2 route-target import 2:2 route-target import 1:1 ip vrf AWSSydney2 rd 3:3 route-target export 3:3 route-target import 3:3 route-target import 1:1 ip cef no ip domain lookup no ipv6 cef multilink bundle-name authenticated interface FastEthernet0/0 description Vocus Internet no ip address speed 100 full-duplex interface FastEthernet0/0.1 encapsulation dot1Q 1 native ip address 195.45.73.22 255.255.255.252 interface FastEthernet0/0.2 encapsulation dot1Q 2 ip vrf forwarding AWSSydney1 ip address 195.45.121.1 255.255.255.224 interface FastEthernet0/0.3 encapsulation dot1Q 3 ip vrf forwarding AWSSydney2 ip address 195.45.121.2 255.255.255.224 interface FastEthernet0/1 description LAN_SIDE ip address 10.0.0.5 255.255.255.0 speed 100 full-duplex no mop enabled ip forward-protocol nd ip route 0.0.0.0 0.0.0.0 195.45.73.21 ip route vrf Internet 0.0.0.0 0.0.0.0 195.45.73.21

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  • How to force certain traffic through GRE tunnel?

    - by wew
    Here's what I do. Server (public internet is 222.x.x.x): echo 'net.ipv4.ip_forward=1' >> /etc/sysctl.conf sysctl -p iptunnel add gre1 mode gre local 222.x.x.x remote 115.x.x.x ttl 255 ip add add 192.168.168.1/30 dev gre1 ip link set gre1 up iptables -t nat -A POSTROUTING -s 192.168.168.0/30 -j SNAT --to-source 222.x.x.x iptables -t nat -A PREROUTING -d 222.x.x.x -j DNAT --to-destination 192.168.168.2 Client (public internet is 115.x.x.x): iptunnel add gre1 mode gre local 115.x.x.x remote 222.x.x.x ttl 255 ip add add 192.168.168.2/30 dev gre1 ip link set gre1 up echo '100 tunnel' >> /etc/iproute2/rt_tables ip rule add from 192.168.168.0/30 table tunnel ip route add default via 192.168.168.1 table tunnel Until here, all seems going right. But then 1st question, how to use GRE tunnel as a default route? Client computer is still using 115.x.x.x interface as default. 2nd question, how to force only ICMP traffic to go through tunnel, and everything else go default interface? I try doing this in client computer: ip rule add fwmark 200 table tunnel iptables -t mangle -A OUTPUT -p udp -j MARK --set-mark 200 But after doing this, my ping program will timeout (if I not doing 2 command above, and using ping -I gre1 ip instead, it will works). Later I want to do something else also, like only UDP port 53 through tunnel, etc. 3rd question, in client computer, I force one mysql program to listen on gre1 interface 192.168.168.2. In client computer, there's also one more public interface (IP 114.x.x.x)... How to forward traffic properly using iptables and route so mysql also respond a request coming from this 114.x.x.x public interface?

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  • KVM Guest with NAT + Bridged networking

    - by Daniel
    I currently have a few KVM Guests on a dedicated server with bridged networking (this works) and i can successfully ping the outside ips i assign via ifconfig (in the guest). However, due to the fact i only have 5 public ipv4 ip addresses, i would like to port forward services like so: hostip:port - kvm_guest:port UPDATE I found out KVM comes with a "default" NAT interface, so added the virtual NIC to the Guest virsh configuration then configured it in the Guest, it has the ip address: 192.168.122.112 I can successfully ping 192.168.122.112 and access all ports on 192.168.122.112 from the KVM Host, so i tried to port forward like so: iptables -t nat -I PREROUTING -p tcp --dport 5222 -j DNAT --to-destination 192.168.122.112:2521 iptables -I FORWARD -m state -d 192.168.122.0/24 --state NEW,RELATED,ESTABLISHED -j ACCEPT telnet KVM_HOST_IP 5222 just hangs on "trying" telnet 192.168.122.112 2521 works [root@node1 ~]# tcpdump port 5222 tcpdump: WARNING: eth0: no IPv4 address assigned tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes 23:43:47.216181 IP 1.152.245.247.51183 > null.xmpp-client: Flags [S], seq 1183303931, win 65535, options [mss 1400,nop,wscale 3,nop,nop,TS val 445777813 ecr 0,sackOK,eol], length 0 23:43:48.315747 IP 1.152.245.247.51183 > null.xmpp-client: Flags [S], seq 1183303931, win 65535, options [mss 1400,nop,wscale 3,nop,nop,TS val 445778912 ecr 0,sackOK,eol], length 0 23:43:49.415606 IP 1.152.245.247.51183 > null.xmpp-client: Flags [S], seq 1183303931, win 65535, options [mss 1400,nop,wscale 3,nop,nop,TS val 445780010 ecr 0,sackOK,eol], length 0 7 packets received by filter 0 packets dropped by kernel [root@node1 ~]# iptables -L Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination ACCEPT all -- anywhere 192.168.122.0/24 state NEW,RELATED,ESTABLISHED Chain OUTPUT (policy ACCEPT) target prot opt source destination All help is appreciated. Thanks.

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  • Windows Server 2003 DHCP not handing out IPs

    - by SnOrfus
    I'm trying to setup a home server (to tinker with) as a domain controller. I've setup the domain and I've installed DHCP and setup a scope without any exclusions (with the default range of 192.168.0.1-254). My client machine is a Windows 7 (RC) machine and it has a connection but can't get an IP address. Even if I try setting the IP to a static 192.168.0.2 and there is still no connectivity. I can ping it from the server, but pinging the server from the client just times out. The only thing between the server and the client is a 24 port switch (D-Link DES-1024D). edit Ok, it turned out that the interfaces were setup backwards in the NAT settings (the internal nic connection was set to public and the external nic connection was set to private). I changed this and all was OK.... sort-of. Problem is now: If I set a static ip on the client (where I am typing this from) all is fine. BUT; when I set it to get it from DHCP, I get a correct IP from the server (192.168.0.2) but there is no internet on the client; but I can still ping the server fine from the client (which makes sense cause I was able to get an IP from it). edit I ended up just removing the Routing and DHCP server roles and just going with ICS for the time being until I get my hands on some better learning tools.

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  • Unable to connect remotely to Vsftpd server set up on CentOS VirtualBox

    - by ryekayo
    I have set up a Vsftp server using the following instructions provided Here and even went as far as following the commentary at the bottom. But I am unable to connect remotely. When I attempt to use FileZilla or my Ubuntu terminal, I always get: ryan@ryan-Galago-UltraPro:~$ ftp 10.0.x.xx ftp: connect: Connection timed out ftp> I have checked and re-checked iptables conf file and made sure that Port 21 is being Accepted and it is. I have looked this up on the web and decided to try nmap to port scan it and this is what I get for a result: ryan@ryan-Galago-UltraPro:~$ nmap -PN 10.0.xx.xx Starting Nmap 6.40 ( http://nmap.org ) at 2014-08-19 15:01 EDT Nmap scan report for 10.0.xx.xx Host is up. All 1000 scanned ports on 10.0.xx.xx are filtered Nmap done: 1 IP address (1 host up) scanned in 201.38 seconds Is there anything else that I should do or check for? UPDATE: I have tried to ping from the virtual machine to my IP address on Ubuntu and have been successfully able to. I cannot ping to my virtual machine from Ubuntu. I have narrowed this down to possibly being a firewall related issue on Ubuntu's side, but why would I be unable to connect from FileZilla?

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  • Can't access server on LAN new Router

    - by RMDan
    Earlier this week my roommates decided to change the router we are using for our home network. On the old router I had no problems accessing a laptop running Mint Linux over the network(SSH, FTP, and Shared Folders). However I am now not able to connect. I have verified the IP address of my Linux machine has not changed and I have no problems connecting to our NAS(WDMYCLOUD). The new router is a D-Link DIR-868L. PuTTY is giving me a Timed Out error(was giving me a EHOSTUNREACH before). Running Windows 8.1 the connecting laptop, but tried connecting using my phone via SSH did not work either. More information: Can ping the Linux machine from the router but not my computer. Pinging 192.168.0.111 with 32 bytes of data: Reply from 192.168.0.102: Destination host unreachable. Reply from 192.168.0.102: Destination host unreachable. Reply from 192.168.0.102: Destination host unreachable. Reply from 192.168.0.102: Destination host unreachable. Ping statistics for 192.168.0.111: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

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  • Routing WIFI and LAN for specific traffic

    - by jakebird451
    I have two network devices aboard my macbook pro: WIFI (en1): Used for general traffic. Connects to an ip of 192.168.19.* via DHCP LAN (en0): Used for specific traffic. Connects to an ip of 192.168.2.10 as a static IP. Does not connect to a router, only a switch for direct routing connection. I have 4 IP addresses I need to access on the LAN: 192.168.2.1 192.168.2.21 192.168.2.20 192.168.2.30 The rest of the traffic needs to go to WIFI. I have tried setting up a routing table for the specific ip addresses, but I only managed to mess up my network. I do not venture out into the world of networking too often, but this was the latest command I have been trying: sudo route add -host 192.168.2.30 -interface en0 This command killed my ability to use ping. It told me that ping could not allocate memory (is that even possible)? It also killed my wifi access. Logging out and back in fixed the issue. I really do not mind to make this solution permanent, so I am fine with a temporary routing. EDIT: If I currently have been trying: sudo route flush sudo route add default 192.168.19.1 This gets everything to work for about a minute. But after such minute it "forgets" the routing to WiFi while retaining LAN's (en0) routing. If I unplug and replug my LAN (en0) cable, the process works for another minute.

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  • What is the correct iptables rule when NATing multiple private subnets?

    - by Jose Mendez
    I have a Centos minimal 6.5 acting as a router. eth0 is connected to a Cisco switch trunk port, allowing VLANs 200-213. I have several VLAN interfaces just as this link suggests: https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Deployment_Guide/s2-networkscripts-interfaces_802.1q-vlan-tagging.html And have IPv4 forwarding, so all my network devices from any of the networks 200-213 can communicate with each other using this linux box as their router. Problem is, I need them to access the Internet, so I added the following rule: iptables -t nat -A POSTROUTING -s 192.168.0.0/16 -j SNAT --to 1.1.1.56 1.1.1.56 is the "outside" address. This works fine, devices connected to the internal networks can ping Intertnet addresses BUT, they stop being able to talk to each other across subnets, so 192.168.211.55 can ping 8.8.8.8, but can't talk to 192.168.213.5. As soon as I do a service iptables restart to remove the rule, I can start talking across internal subnets again. What would be the correct way to set up NAT for multiple private subnets? Or maybe the correct way to set up forwarding?

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  • Windows Server 2003 DHCP not handing out IPs

    - by SnOrfus
    I'm trying to setup a home server (to tinker with) as a domain controller. I've setup the domain and I've installed DHCP and setup a scope without any exclusions (with the default range of 192.168.0.1-254). My client machine is a Windows 7 (RC) machine and it has a connection but can't get an IP address. Even if I try setting the IP to a static 192.168.0.2 and there is still no connectivity. I can ping it from the server, but pinging the server from the client just times out. The only thing between the server and the client is a 24 port switch (D-Link DES-1024D). edit Ok, it turned out that the interfaces were setup backwards in the NAT settings (the internal nic connection was set to public and the external nic connection was set to private). I changed this and all was OK.... sort-of. Problem is now: If I set a static ip on the client (where I am typing this from) all is fine. BUT; when I set it to get it from DHCP, I get a correct IP from the server (192.168.0.2) but there is no internet on the client; but I can still ping the server fine from the client (which makes sense cause I was able to get an IP from it). edit I ended up just removing the Routing and DHCP server roles and just going with ICS for the time being until I get my hands on some better learning tools.

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  • Domain authentication over OPEN wireless pre-logon (Windows 7 Pro) - No logon servers avail

    - by Shadow00Caster
    I have a plethora of laptops that are joined to an AD domain. I have an enterprise wireless system setup, the users of these laptops will be using an OPEN unsecured SSID which will ultimately have a captive portal that uses Radius-AD auth and firewall rules to allow access pre-captive portal auth to the proper ip's/ports of DC's etc for auth etc. I already have other laptops/users connecting to another SSID with 802.11x and SSO, all works perfectly pre-logon etc. My problem is with this open network, for some reason I cannot get the machines to auth to AD. The laptops connect to the wireless network, I confirm this on the controller and can ping the laptop at startup. I sharked the wires on the 2 DC's that these machines auth to, I can see a DNS SOA update from a laptop im testing with and can ping that test laptop from both DC's. When I try to logon, "There are currently no logon servers available to service the logon request." The shark shows no incoming connections to either DC even though the laptop is connected and pingable. Any help is greatly appreciated.

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  • Second ip address on same interface CentOS 6.3

    - by user16081
    I tried to add a second LAN addresses in CentOS 6.3 on a brand new install and it's not working. I installed a new copy of CentOS 5.7 and tried the same and it worked right away. Now I'm just trying to setup the alias on the same subnet and it's not working. what am i doing wrong, is this not possible on CentOS 6.3? second ip address on the same interface but on a different subnet CentOS 5.7 it works: DEVICE=eth0 BOOTPROTO=static BROADCAST=192.168.0.255 HWADDR=00:0C:29:01:6F:89 IPADDR=192.168.0.167 NETMASK=255.255.255.0 NETWORK=192.168.0.0 ONBOOT=yes DEVICE=eth0:0 BOOTPROTO=static BROADCAST=192.168.0.255 HWADDR=00:0C:29:01:6F:89 IPADDR=192.168.0.166 NETMASK=255.255.255.0 NETWORK=192.168.0.0 ONBOOT=yes On CentOS 6.3: does not work DEVICE=eth0 BOOTPROTO=static BROADCAST=192.168.0.255 HWADDR=00:0C:29:1E:DE:86 IPADDR=192.168.0.242 NETMASK=255.255.255.0 NETWORK=192.168.0.0 GATEWAY=192.168.0.1 ONBOOT=yes DNS1=205.134.232.138 DNS2=4.4.4.4 DEVICE=eth0:0 BOOTPROTO=static BROADCAST=192.168.0.255 HWADDR=00:0C:29:1E:DE:86 IPADDR=192.168.0.240 NETMASK=255.255.255.0 NETWORK=192.168.0.0 ONBOOT=yes # /etc/init.d/network restart Shutting down interface eth0: Device state: 3 (disconnected) [ OK ] Shutting down loopback interface: [ OK ] Bringing up loopback interface: [ OK Bringing up interface eth0: Active connection state: activated Active connection path: /org/freedesktop/NetworkManager/ActiveConnection/3 [ OK ] # ping 192.168.0.240 PING 192.168.0.240 (192.168.0.240) 56(84) bytes of data. From 192.168.0.242 icmp_seq=2 Destination Host Unreachable Appreciate any advice, thanks Update: Perhaps this is relevant? On CentOS 5.7: # dmesg |grep eth eth0: registered as PCnet/PCI II 79C970A eth0: link up eth0: link up On 6.3: # dmesg | grep eth e1000 0000:02:00.0: eth0: (PCI:66MHz:32-bit) 00:0c:29:1e:de:86 e1000 0000:02:00.0: eth0: Intel(R) PRO/1000 Network Connection e1000: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None 8021q: adding VLAN 0 to HW filter on device eth0 eth0: no IPv6 routers present

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  • Wireless router blocking some sites while using ethernet is fine

    - by Micke
    I'm using Windows 7 and my router is a wireless Apple Airport Express that is approximately two years old. Suddenly I can't access some sites (for example www.sthlm.friskissvettis.se, or www.vegetarian-shoes.co.uk, some streamed tv-shows on svtplay.se, and a number of other random sites) when connecting to internet with my router. It worked good until recently and I'm fairly sure this problem emerged when my ISP upgraded from 10/10mbit to 100/10mbit speed. Most other sites like facebook and google works fine. When using my network cable to connect to internet everything works fine and I can access these sites. Firmware is current and I've tried reseting the router to factory defaults. Tried different browsers, and I can't ping the "blocked" sites either. Tracert www.sthlm.friskissvettis.se starts with 10.0.0.1 and continues through a number of long addresses until it says timeout. The last working address before timeout was sth-tcy-ipcore01-ge-0-2-0.neq.dgcsystems.net [83.241.252.13], if it matters. Tracert www.vegetarian-shoes.co.uk also eventually gives me a timeout. When the network cable is plugged in, I still get timeout on tracert www.sthlm.friskissvettis.se even though I can access the site in Chrome. Weird. www.vegetarian-shoes.co.uk doesn't give me a tracert timeout when the cable is plugged in, and I can access the site as usual. I've tried changing DNS servers to use opendns servers instead, but to no use. I've tried pinging these two sites with a lower MTU packet size (with this method: http://www.richard-slater.co.uk/archives/2009/10/23/change-your-mtu-under-vista-or-windows-7/), but still can't access them through ping... I don't know what to do anymore.... any suggestions???

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  • Weird connectivity issue wtih USB Wifi stick.

    - by Carlos Nunez
    Hi, all! I'm not sure if this is the appropriate place to throw this question out there, but I'll give it a shot. I'm setting up two PCs, and I've been having massive troubles getting a USB wireless dongle working. I have two Sony VAIOs (Windows XP, SP2) that I found second-hand, and since they will be in a location too far to connect by Ethernet (no, can't do patch panels here :p), I need to connect them by wireless. Easiest and cheapest way to do that at the moment is by using two USB wireless sticks that I've had for a while, but never used. One of the computers is using a SMC-manufactured card, whereas the other is using a Belkin F5D7050. The box with the SMC card can see and authenticate with my router just fine, and has no problem obtaining a DHCP lease. The box with the Belkin, on the other hand, isn't so lucky. While it can see my router and associate with it, it will not obtain a DHCP-issued address. Worse, when I assign a static IP address to the NIC, it can ping the entire network and access the internet (meaning it can authenticate with the router), but no computer can ping to it UNLESS that computer pinged the computer that's pinging it first. Confused? Well, so am I. Has anyone had this issue before? Is this just a sign of a bad card? (For the moment, I have it connected by Ethernet, as I haven't moved it yet. However, this will be a problem when I set it up in its new home later.) Thanks! -Carlos Nunez

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  • Determine the time difference between two linux servers

    - by Paul
    I am troubleshooting a latency network issue on a network. It is probably a nic or cabling issue, but while I was going through the process of figuring it out, I was looking at the timings of a ping packet leaving a network card and arriving at another server. Both linux. So I have tcpdump running on both, and I issue a ping from one to the other, and back again, and looking at the timing differences might have shed light on where the latency is coming from. It is an academic exercise now, as I need to eliminate some more fundamental causes, but I was curious as to how this could be achieved. Given that ntpd is installed and running on two servers, how can I confirm the current time discrepency between the two servers, to whatever level of accuracy is possible - given that we are talking about latency on a local lan, which is ideally a millisecond or so. NTP itself is accurate to a couple of ms under good conditions, and as both servers are in the same environment, they should (presumably) achieve a similar level of accuracy, and so should have a time discrepency between them of a only few ms - but how can I check this?

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  • Cannot access host from a virtualbox guest using bridged adapter

    - by David Dai
    I have a windows 7 host with firewall turned off. And I have a windowsXP guest running on Virtualbox 4.2.4r81684. In my windowsXP guest I tried to connect to the FTP server on my host machine(which used to work well) but it didn't work. I tried to ping my host machine, but it didn't work either. Then I tried to ping my guest from host, it worked well. my guest ip is :192.168.1.95 my host ip is : 192.168.1.9 route table on guest machine is this: C:\Documents and Settings\wenlong>route PRINT =========================================================================== Interface List 0x1 ........................... MS TCP Loopback interface 0x2 ...08 00 27 66 54 6c ...... AMD PCNET Family PCI Ethernet Adapter #2 - Packe t Scheduler Miniport =========================================================================== =========================================================================== Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 192.168.1.1 192.168.1.95 20 127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1 192.168.1.0 255.255.255.0 192.168.1.95 192.168.1.95 20 192.168.1.95 255.255.255.255 127.0.0.1 127.0.0.1 20 192.168.1.255 255.255.255.255 192.168.1.95 192.168.1.95 20 224.0.0.0 240.0.0.0 192.168.1.95 192.168.1.95 20 255.255.255.255 255.255.255.255 192.168.1.95 192.168.1.95 1 Default Gateway: 192.168.1.1 =========================================================================== Persistent Routes: None arp cache is this: C:\Documents and Settings\wenlong>arp -a Interface: 192.168.1.95 --- 0x2 Internet Address Physical Address Type 192.168.1.1 00-26-f2-60-3c-04 dynamic 192.168.1.9 90-e6-ba-c2-90-2f dynamic It's strange because there was no problem days before and I didn't make any changes to the setting. could anybody help? PS. the guest can communicate with other machines in the LAN(for example 192.168.1.114) ok. it just cannot connect to the host machine.

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  • VMware ARP/Mac Networking

    - by Ross Wilson
    Hi Guys, I am very interested in how VMware networking works. I have scoured the VMware website and read their data sheets, this has given me some basic knowledge. I now have some questions. Lets assume that we have a physical server running the VMware hypervisor. The physical server is running a Virtual Machine. The physical box has one physical NIC. The NIC is connected to a switch, as so is a desktop client. Now, this is where my first question lies. The VM has an IP address: 192.168.1.1. How do desktop clients on the network communicate with this VM? So, the client pings 192.168.1.1. The ping packet is sent to the switch. The switch checks its MAC address table and sees that 192.168.1.1 is associated with the MAC address of the physical NIC. Correct? I then assume that the ping packet is sent to the server's physical NIC, where the hypervisor routes the packet to the VM thats using 192.168.1.1? Please could you give me a run down as to how VM networking works? Many thanks, Ross

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  • Configuring vlans on Cisco SG200 series switch with Ubuntu server

    - by nixnotwin
    I created a vlan on Ubuntu with vconfig tool with 21 as id and eth1 as the host port. I connected eth1 to one of the ports on the swtich (GE23) as all ports trunk by default. In the webgui I created a vlan named test with the id 21 and I made GE2 are port as an access port. In port to vlan mapping I selected vlan 21 and added it port GE2 by selecting untagged option. I have assigned 192.168.1.1/24 as the ip of eth1.21 on Ubuntu. If I connect another cleint pc to GE2 port with a ip of 192.168.1.2/24 I cannot ping the server ip (192.168.1.1/24). Ping from server to client also does not work. I inspected packets that are sent out eth1 on the server and I could see the vlan 21 tag. And I connect the other end of the cable to a different Linux pc and inspected the packets but no vlan tags can be seen. What could be preventing me from getting vlans working? Edit 1 screenshots:

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  • Remote Desktop access Windows 7 system from Windows 8

    - by Prabhat
    I have 2 systems; Windows 7 & Windows 8. Both are connected to WiFi router. They have been assigned address 192.168.2.8 & 192.168.2.9 respectively. I have added them to home group. I am able to ping and connect Windows 8 system from Windows 7. I am having trouble connecting Windows 7 system from Windows 8 system. I can't even ping Windows 7 system. Windows 7 system's user is administrator (default administrator account from secpol.msc). File sharing, Remote Access, network discovery are all enabled. Someone please help me connect. EDIT : I found that this is the issue of Kaspersky Internet Security 2012. If I disable firewall, it works. I tried opening port 3389 in Kaspersky. It is still blocking access.

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  • ssh connection slow when using @hostname.com but now when using @ipaddress

    - by Alex Recarey
    When connecting to a Debian server using ssh, if I use [email protected] (the IP address of hte server) the connection is instant. If however I use [email protected] (a DNS redirected to the IP address of the server) the ssh connection hangs for a 20 seconds before connecting successfully. The ssh logs show the following: [alex@alex home]$ ssh -v -v [email protected] OpenSSH_5.5p1, OpenSSL 1.0.0c-fips 2 Dec 2010 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug2: ssh_connect: needpriv 0 and here it hangs during 20 seconds before continuing. I think it might have something to do with reverse DNS or similar (the server does not really "know" it's name is hostname.com, it just has that DNS rediriected to its IP address). I have added the following options to /etc/ssh/sshd_config: UseDNS no GSSAPIAuthentication no to no effect. The server's DNS records in /etc/resolv.conf are configured correctly: ping hostname.com PING sub.domain.com (X.X.X.X) 56(84) bytes of data. 64 bytes from replicant (X.X.X.X): icmp_seq=1 ttl=64 time=0.029 ms 64 bytes from replicant (X.X.X.X): icmp_seq=2 ttl=64 time=0.050 ms?s Thanks for the help. Solution: It seems the DSL router my ISP saddled me with was causing the trouble. Changing my DNS server from 192.168.1.1 (router's IP) to google's (8.8.8.8, always good to know when you are in a hurry) instantly solved the connection delay problem. I am guessing that the 50€ router provided does not cache DNS entries, although I don't understand why pinging the DNS address had no delay, and 20 seconds is too long of a wait, even for uncached DNS. Tnanks again for the help!

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  • Basic multicast network performance problems

    - by davedavedave
    I've been using mpong from 29west's mtools package to get some basic idea of multicast latency across various Cisco switches: 1Gb 2960G, 10Gb 4900M and 10Gb Nexus N5548P. The 1Gb is just for comparison. I have the following results for ~400 runs of mpong on each switch (sending 65536 "ping"-like messages to a receiver which then sends back -- all over multicast). Numbers are latencies measured in microseconds. Switch Average StdDev Min Max 2960 (1Gb) 109.68463 0.092816 109.4328 109.9464 4900M (10Gb) 705.52359 1.607976 703.7693 722.1514 NX 5548(10Gb) 58.563774 0.328242 57.77603 59.32207 The result for 4900M is very surprising. I've tried unicast ping and I see the 4900 has ~10us higher latency than the N5548P (average 73us vs 64us). Iperf (with no attempt to tune it) shows both 10Gb switches give me 9.4Gbps line speed. The two machines are connected to the same switch and we're not doing any multicast routing. OS is RHEL 6. 10Gb NICs are HP 10GbE PCI-E G2 Dual-port NICs (I believe they are rebranded Mellanox cards). The 4900 switch is used in a project with tight access control so I'm waiting for approval before I can access it and check the config. The other two I have full access to configure. I've looked at the Cisco document[2] detailing differences between NX-OS and IOS w.r.t multicast so I've got some ideas to try out but this isn't an area where I have much expertise. Does anyone have any idea what I should be looking at once I get access to the switch? [1] http://docwiki.cisco.com/wiki/Cisco_NX-OS/IOS_Multicast_Comparison

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  • Cisco VPN endpoints disconnecting from a VLAN

    - by dunxd
    I have a number of Cisco ASA 5505 and PIX 506e around the world acting as VPN endpoints. They connect to a Cisco VPN Concentrator 3000 at HQ. I am using EZVPN to set up the VPN (i.e. most of the config is central on the VPN Concentrator) The majority of endpoints work absolutely fine. However, there are three that do not. 2 ASAs and 1 PIX get disconnected from one of the VLANs on our network. This is the VLAN that my monitoring server runs on - so those endpoints look as if they have gone down. However, I can still ping the endpoints from our user VLAN. If I then SSH onto the endpoint, and do a ping to my monitoring server, the connection comes back. Then after about 10 minutes it stops working again. I've looked at the configuration of my endpoints, and I can't see any significant differences. One common feature is that the affected endpoints are connecting to the internet via retail quality routers. However, I don't see how this could affect traffic within a VPN tunnel. Any ideas or suggestions? I've also got a thread on Cisco's forums at https://supportforums.cisco.com/thread/344638. One other person has reported the same problem.

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  • Cisco ASA5505 won't sync with NTP

    - by Martijn Heemels
    Today I noticed that the clock my Cisco ASA 5505 firewall was running about 15 minutes late, which surprised me since I've set up the NTP client. My two NTP servers 10.10.0.1 and 10.10.0.2 are virtualized Windows Server 2008 R2 domain controllers, and both have the correct time. As shown below, the ASA knows about the two servers, can ping them and seems to poll them periodically, so I suppose it can reach them both. The ASA claims its time source is NTP, however the clock is unsynchronized. Neither host is marked as synced. Result of the command: "ping 10.10.0.1" Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 10.10.0.1, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms Result of the command: "sh ntp ass" address ref clock st when poll reach delay offset disp ~10.10.0.1 .LOCL. 1 78 1024 377 0.5 643.69 17.0 ~10.10.0.2 10.10.0.1 2 190 1024 377 0.9 655.91 58.4 * master (synced), # master (unsynced), + selected, - candidate, ~ configured Result of the command: "sh ntp stat" Clock is unsynchronized, stratum 16, no reference clock nominal freq is 99.9984 Hz, actual freq is 99.9984 Hz, precision is 2**6 reference time is 00000000.00000000 (07:28:16.000 CEST Thu Feb 7 2036) clock offset is 0.0000 msec, root delay is 0.00 msec root dispersion is 0.00 msec, peer dispersion is 0.00 msec Result of the command: "sh clock detail" 10:33:23.769 CEDT Tue Jun 26 2012 Time source is NTP UTC time is: 08:33:23 UTC Tue Jun 26 2012 Summer time starts 02:00:00 CEST Sun Mar 25 2012 Summer time ends 03:00:00 CEDT Sun Oct 28 2012 I've tried the basic steps of manually setting the time and removing and adding the timeservers, to no avail. My ASA's ntp config is simply: ntp server 10.10.0.1 ntp server 10.10.0.2 Do I need to enable authentication to use a Windows NTP server? Any thoughts?

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