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• How to download large files when the download size is restricted ?

  - by Rahul

  ? In my office, the network admin has restricted the download limit to a size of 1.8MB for any file. This is for sub ordinates accounts only. But for my manager's PC, there are no restrictions. Is there any way to download files from my PC by using my managers' ip address. I just tried using his ip on my pc but, had the same problem. ? Earlier I was given access to our Linux server from my pc using putty. Then I used to download large files on to the server and then transfer from server to my machine using fire ftp. This transfer worked perfectly fine. But, now I don't have any access to the server. So can I be able to download large files using fire ftp from my own PC ? I'm using Windows XP machine. Please suggest a solution by any possible combination. Thanks.

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• Top ten security tips for non-technical users

  - by Justin

  I'm giving a presentation later this week to the staff at the company where I work. The goal of the presentation is to serve as a refresher/remidner of good practices that can help keep our network secure. The audience is made up of both programmers and non-technical staff, so the presentation is geared for non-technical users. I want part of this presentation to be a top list of "tips". The list needs to be short (to encourage memory) and be specific and relevant to the user. I have the following five items so far: Never open an attachment you didn't expect Only download software from a trusted source, like download.com Do not distribute passwords when requested via phone or email Be wary of social engineering Do not store sensitive data on an FTP server I have two questions: Do you suggest any additional items? Do you suggest any changes to existing items?

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• Cisco ASA site-to-site vpn not initiating phase 1 (not sending udp 500 packets)

  - by Sean Steadman

  I am hoping someone here can help me with my problem. I am trying to setup an IPSEC site-to-site VPN between two cisco ASA 5520's in GNS3 (both using 8.4.2). I have been unsuccesful in getting the tunnel up and it appears neither ASA is sending packets out,in regards to phase 1 and phase 2 (tested by using wireshark and seeing NO udp 500 packets). Doing show ipsec sa and such shows nothing. CALIFORNIA(config)# show ipsec sa There are no ipsec sas FLA-ASA# show ipsec sa There are no ipsec sas I will attach both configurations in two different pastebin files as to keep this post a bit cleaner. Essentially California side has 172.20.1.0/24 and Florida side has 10.10.10.0/24. California ASA config: http://pastebin.com/v0pngYzF Florida ASA config: http://pastebin.com/E2geybta Please let me know if there is any other vital information that could help. I have gotten IPSEC tunnels to work using openSwan (linux) and cisco routers but cannot for the life of me get ASA IPSEC tunnels to work. The ASDM is out of the question I only use cli. Thanks for any useful help!

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• Why is my ethernet interface in promiscuous mode

  - by nhed

  I read that seeing a flag of M in netstat -i is the way to tell which of your interfaces is in promiscuous mode I run it and I see that eth1 is in promiscuous mode $ netstat -i Kernel Interface table Iface MTU Met RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP TX-OVR Flg eth1 1500 0 1770161198 0 0 0 57446481 0 0 0 BMRU lo 16436 0 97501566 0 0 0 97501566 0 0 0 LRU This seems to be the case on all the machines I checked (All Centos6.0, both virtual and physical), any idea why ethernet devices would be in such a mode unless someone was running any pcap based app (sudo lsof | grep pcap shows nothing)? I did not see any mention of promiscuous in any of the config files (sudo grep -r promis /etc) Any ideas what puts the interface into that mode and why? p.s. most of the posts I see seem to be security related, this is not that

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• Is it possible to open server ports on TUN devices?

  - by JosephH

  If I make a VPN connection to a server (say myvpn.com; assume this server is not behind any router/firewall) via a TUN device and open a port (say 5555), will someone else be able to connect to me via myvpn.com:5555? If not, is there a tunneling software that does exactly this in a transparent manner? i.e. run any TCP/UDP-based server instance behind a router without NAT using another remote server.

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• Host ::1 resolves to remote IP

  - by thebuckst0p

  /etc/hosts files usually have this line, ::1 localhost. I thought ::1 was the equivalent of 127.0.0.1/localhost, and from my reading it seems to be the IPv6 version. So I was using it in Apache for firewalling, "Allow from ::1" and it only allowed local. Then suddenly that stopped working, so I pinged ::1 and got a remote IP address. I tracerouted it and it went through my ISP, through some Microsoft server, then another half dozen steps of asterisks... I'm not sure why this would be (the remote IP), but it doesn't seem good. I grep'd my hard drive for the remote IP and it doesn't appear anywhere. Is this some indicator that I'm being hacked, or normal behavior? Maybe my IPv6 settings are wrong? (This is a brand new MacBookPro with Snow Leopard.) Any ideas about this would be great - what is ::1 supposed to be, why would it be remote, should I be worried, how do I get it back to localhost? Thank you!

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• Asus PCE-N53 11n N600 PCI-E Adapter on 3.x kernel

  - by CITguy

  Problem ASUS PCE-N53 wireless NIC doesn't work for latest versions of the linux kernel. How do I get it working on my system? (Note: I'm posting the answer I've found for others to use.) Installing Driver for Linux 3.x Kernel ASUS provides Linux drivers from their website, but it mentions that the driver supports "Linux Kernel 2.6.x", so it won't work without a some modifications to the driver code. Fortunately, an archlinux forum mentions similar problems and one user was able to create a patch for kernel 3.8.x that seems to work with kernel 3.11.x. Here's how I got it working: Prerequisites Ubuntu: sudo apt-get install build-essential Arch: sudo pacman -S base-devel Steps: 1. Download the driver from the ASUS website The download can be found under "Support Drivers & Tools". 2. Unzip the contents of the downloaded file cd into the new directory 3. Patch The arch forum mentions a 3.8 patch file that needs to be downloaded. Download rt5592sta_fix_64bit_3.8.patch to the current directory. tar -xvf {driver_source.tar.gz} cd into the directory created in previous step patch -p1 < ../rt5592sta_fix_64bit_3.8.patch 4. Compile NOTE: You will need to use sudo for it to compile properly. sudo make sudo make install sudo modprobe rt5592sta 5. Enjoy If all is well, you should now have a working card.

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• Accesing internet with Host-Only network VirtualBox

  - by Bibo

  I have two VMs in my VirtualBox. Both are FreeBSD and should communicate between each other. I have created network with DHCP enabled and set like this: Server Address 10.10.10.1 Server Mask 255.255.255.0 Lower Address Bound 10.10.10.100 Upper Address Bound 10.10.10.200 My VMs are pinging each other and getting right ip adress. This is what I must have and can´t change. Now I want to access internet from one VM and I found that I must use two network cards but I don´t know how to set the second one. I am new with VirtualBox and this stuff so if you count with this in you answer I would appreciate that. And I have Windows 8 as host system if it´s matter.

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• Can't get IPv6 address using radvd on wireless interface on windows, wired works fine.

  - by AndrejaKo

  I set up my router to use OpenWRT and set it up to use IPv6 using a tunnel form SixXs. I'm having problems with stateless autoconfiguration using radvd. On my computer, wired connection can get its IPv6 address fine, but wireless can't. After spending some time on OpenWRT forums, I'm pretty much sure now that router is set up fine and that the problem is with my windows settings. Also, I do not have any problems getting IPv6 address on openSUSE 11.3. So what should I do to solve this and what information should I post? Here's radvdump output for wired interface: interface br-lan { AdvSendAdvert on; # Note: {Min,Max}RtrAdvInterval cannot be obtained with radvdump AdvManagedFlag on; AdvOtherConfigFlag on; AdvReachableTime 0; AdvRetransTimer 0; AdvCurHopLimit 64; AdvDefaultLifetime 1800; AdvHomeAgentFlag off; AdvDefaultPreference medium; AdvSourceLLAddress on; prefix 2001:15c0:67d0::/64 { AdvValidLifetime 86400; AdvPreferredLifetime 14400; AdvOnLink on; AdvAutonomous on; AdvRouterAddr off; }; # End of prefix definition }; # End of interface definition Here's radvdump output for wireless interface: # # radvd configuration generated by radvdump 1.6 # based on Router Advertisement from fe80::a0b7:deff:fef0:5b34 # received by interface br-lan # interface br-lan { AdvSendAdvert on; # Note: {Min,Max}RtrAdvInterval cannot be obtained with radvdump AdvManagedFlag on; AdvOtherConfigFlag on; AdvReachableTime 0; AdvRetransTimer 0; AdvCurHopLimit 64; AdvDefaultLifetime 1800; AdvHomeAgentFlag off; AdvDefaultPreference medium; AdvSourceLLAddress on; prefix 2001:15c0:67d0::/64 { AdvValidLifetime 86400; AdvPreferredLifetime 14400; AdvOnLink on; AdvAutonomous on; AdvRouterAddr off; }; # End of prefix definition }; # End of interface definition # # radvd configuration generated by radvdump 1.6 # based on Router Advertisement from fe80::a0b7:deff:fef0:5b34 # received by interface br-lan # interface br-lan { AdvSendAdvert on; # Note: {Min,Max}RtrAdvInterval cannot be obtained with radvdump AdvManagedFlag on; AdvOtherConfigFlag on; AdvReachableTime 0; AdvRetransTimer 0; AdvCurHopLimit 64; AdvDefaultLifetime 1800; AdvHomeAgentFlag off; AdvDefaultPreference medium; AdvSourceLLAddress on; prefix 2001:15c0:67d0::/64 { AdvValidLifetime 86400; AdvPreferredLifetime 14400; AdvOnLink on; AdvAutonomous on; AdvRouterAddr off; }; # End of prefix definition }; # End of interface definition

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• DNS not responding

  - by Born2win

  I have a Dlink DIR-615 router and I have it around six mounths. My internet connection is VPN (PPTP) based i.e. I have been give a username and password from my isp and my ip address is dynamic. But from few days I am experiencing a serious problem. My router connects normally (i can see yellow light) but my computer is giving "DNS not responding" error. I have tried everything (reset,reboot etc) but no sucess. Any help would be appreciated :)

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• Why is there an auto-connect delay to a hidden wireless network - Ubuntu 9.10

  - by Joe Casadonte

  I'm using Ubuntu 9.10 on a Lenovo T61 (in case that matters). Network Manager connects just fine to my hidden SSID, every time. Sometimes, though, it can take upwards of a minute or more to do it. When you're sitting there, staring at the screen, that can seem interminable. Any hints on how I can fix this or manually force a connection? Thanks!

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• Apple Airport Extreme Wireless Card M8881 Connectivity Issue

  - by Carlosfocker

  I bought a Apple Airport Extreme Wireless Card M8881 with the antenna for my old Power Mac G5 1.6 Ghz. The computer is running OS X 10.4. The card works and I can connect to my dlink 802.11g wireless router using WPA2/AES encryption. The problem is that the connection has intermittent connectivity issues. When the issue occurs the signal bars for the connection drop to one or two bars and the performance of the connection suffers greatly. The computer isn't far from the wireless router. I have a laptop at the desk where the mac is and it does not have any issues. I'm not sure what it might be? Updated drivers? Firmware? Let me know if I forgot any important information.

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• Can't find a wireless access point's IP address after changing router IP/LAN settings

  - by flagg19

  I have a modem/router, Netgear DG834, and a wireless access point (AP), Netgear WG602. The AP is directly connected to the router. My old working configuration was: Router IP address : 192.168.0.1 Access point IP address: 192.168.0.10 My new configuration is: Router IP address : 192.168.1.1 Access point IP address: ???.???.???.??? I changed my router's IP address/LAN settings to set up a VPN with another Netgear router that had the same LAN configuration. The wireless network is still up and perfectly working, but I can't find the AP's IP address. I've tried broadcast ping but the AP won't respond. I looked at the router "attached devices", but it's not there. I've played around with Nmap and arp request but the AP is totally invisible. I can fix it by resetting it to factory settings, but I'm very interested in learning more about this problem. I'm also interested in network security and this fact of having an invisible AP well, it's something I'd like to understand.

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• Limiting bandwith on an Windows 7 machine

  - by Mihai Damian

  I need to limit the bandwidth on my Windows 7 x64 machine. In the past (on XP) I've been able to use NetLimiter for similar tasks. However for some reason I can't get it to work anymore. For lower limits the bandwidth tests are able to exceed the limit by 10-50%; higher limits seem to be ignored completely and the bandwidth tests report download speeds of over 10 times the speed I set. I'm using speedtest.net and some similar service from my ISP for these tests. Anyway, I don't necessarily need a program as complex as NetLimiter since I only need to throttle my machine's bandwidth, not a specific program's. In case you are wondering why in the world I'd want to cripple my Internet speed, there is a funny story behind this. Long story short, my modem gets random disconnects. Tech support comes in, says my Internet speed is abnormally high and I must be using some tools to somehow make it go faster than it's supposed to and this messes up my modem. I check the connection with another computer and it seems that my PC is the only one in my network that gets abnormal speeds. I reinstall my OS, speed looks normal at first, after I install the batch of 50 or so updates, it goes back to abnormally high speeds and the disconnect problems are not solved. Now I don't have a clue if the explanation the tech team gave me was just a strategy to lay the blame on someone else, but I was trying to give them the benefit of the doubt and see what happens if I really reduce my speed to their specification. Any help appreciated.

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• Create account for service

  - by Andy

  I am configuring a new server. The server is running Hudson that is going to copy some files from this server to another. The other server is a virtual machine. Both running Windows Server 2012. Hudson is started on server A with log on as "Local System". When I come to the copy phase it says "Access denied". Changing the log on to "Administrator" works. However, I guess this is bad. I do not have much experience with user management. I tried to create a own hudson account on both servers A and B. I tried to log on as hudson account in the service-management but it doesn't start. How would you create an account for this particular service that has access to the shared folder on server B and can be used to start the service on server A? I guess I need two accounts with same username and password on server A and server B? The folder on Server B is shared with everyone and the guest account is enabled.

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• very slow internet with Linksys WRT54GL only in wireless mode (wired is OK)

  - by gojira

  I bought a new Cisco Linksys WRT54GL router to connect my laptop (running Windows 7) to the internet. I installed Tomato 1.28 firmware on the router. When I connect the laptop to the router via ethernet cable, everything is fine and I get extremely fast up- and download speeds. When I connect wirelesssly however, websites load extremely slow - it takes dozens of seconds to load a website! <-- This is my question, how can I fix the wireless speed issue? Gmail for example is unusable this way. I tried speedtest.net, but this always fails in the upload part of the test so I can't even test the bandwidth (could the fact that it fails in the upload part, not the download part, be an indication what the problem is?!). I have isolated the problem a bit, I am convinced it has to do either with the router itself, the router settings, or the settings of the wireless connection in Win 7. Because previously, I was using another router by Buffalo and I had no problems whatsoever. I have tried to reproduce the settings from the Bufallo router as closely as possible on the Linksys router (same channel, same encryption etc). The download speed problem only occurs with the Linksys router, and only in wireless mode! When I exchange the Linksys router with the Buffalo router I have here for testing, the wireless speed is up to normal again. Also, before I had installed the Tomato firmware I had exactly the same problem, so it has nothing to do with the firmware itself. Notes & things I already tried: Changing the channel: does not seem to affect anything, I am also on the same channel (10) which I was previously on when I had a Buffalo router. QoS is off. Ping to the router itself is OK, ~ 1 ms. Some current settings of the linksys router: WAN / Internet Type: DHCP Wirelesss Mode: Access Point B/G Mode: Mixed Broadcast: check Channel: 10 - 2.457 GHz Security: WPA2 Personal Encryption: AES

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• Should I limit end-user gigabit ports to avoid saturating uplink/trunk connections?

  - by Joel Coel

  We have a campus with 16 buildings and older 850nm 1Gbps fiber links between the buildings, that all come to a core switch for our servers that also uses 1Gbps ports. We're finally starting to replace our aging 10/100 end-user switches, and much of what we're looking at are 1 Gbps units. My question is, since the trunk/uplink lines are still 1Gbps, if I were to install 1 Gbps switches for end users, should I limit the ports to 100Mbps until I can also upgrade the trunks to avoid allowing a bad-behaving host to saturate a trunk line (since we're a college, we have plenty of mis-behaving hosts) and thereby create a DoS situation for a building, or will TCP congestion control typically take care of that for me? What if we have a lot of UDP traffic (games, video chats, even a small amount of bittorrent)?

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• How to troubleshoot slow powerconnect 62xx management interface

  - by Hannes

  Our Dell Powerconnect 62xx switches have a very high packetloss on the management interface. I presume this is caused by a new appliance which uses multicast for communication but I am not sure. Our network setup is following: servers a - Dell PC6248 | servers b - Dell PC6248 |- juniper core router servers c - Dell PC6248 | What we see is that the multicast traffic arrives at all servers (but only the servers b use the multicast) and I fear that this multicast traffic floods the switch management interface. The switches' management interfaces are reachable via vlan101, all other traffic is sent over other vlans. When I tcpdump on one of the 2 servers with a vlan 101 ip address, I only get a few arp requests but almost nothing. When I try to ping between these 2 servers, it works like a charm. I would like to know what a good way is to troubleshoot this problem and maybe help me understand what is going wrong on that subnet.

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• Automount of AFP shares on Lion clients from OS X Snow Leopard server - not working right

  - by Paul

  Recently upgraded Snow Leopard clients to Lion. AFP shares are set up as login items. The network shares on some of the machines now take a long time to come up (10 minutes). Several machines that were upgraded are acting normally, and three machines with clean installs of Lion (not upgraded) are also working normally. Is there a network file causing a conflict on some of these client machines? Thanks, Paul

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• Unable to ssh to a Linux VM after a day

  - by jogabonito

  I have a machine running 4 VMs on it. There is one Fedora VM which is causing me some trouble. The IPs of the VMs are something like 10.100.100.* I have a Windows PC which is in the same network. It has an IP 10.100.25.77. When I reboot the Fedora VM, I am able to ping it from my Windows PC as well as use putty to ssh to it. The next day, I cant ping it or ssh from my Windows PC. However I can ping and ssh to the other VMs on the machine. If I ssh to one of the other VMs, I can ping and ssh to the Fedora VM. Next if I restart it, things get back to normal and I can access it without any issues. The IP of the VM doesn't change after rebooting and it is statically assigned I would like to know what is causing this and how to get it fixed. As a last resort, I am thinking of running a cron job to restart the VM every night, it is not a critical server, but will be generally used occasionally in the day time.

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• Variable TTL inside a LAN

  - by user140783

  I recently discovered that ping my local router, returns different TTL values??. The ping 3 switch must pass through before reaching the router, there may be the problem? 192.168.1.99 is the IP of my router , a Cisco WRT120N Thank you! Respuesta desde 192.168.1.99: bytes=32 tiempo<1m TTL=190 Respuesta desde 192.168.1.99: bytes=32 tiempo=29ms TTL=3 Respuesta desde 192.168.1.99: bytes=32 tiempo<1m TTL=117 Respuesta desde 192.168.1.99: bytes=32 tiempo<1m TTL=131 Respuesta desde 192.168.1.99: bytes=32 tiempo<1m TTL=66 Respuesta desde 192.168.1.99: bytes=32 tiempo<1m TTL=66 Respuesta desde 192.168.1.99: bytes=32 tiempo<1m TTL=66 Respuesta desde 192.168.1.99: bytes=32 tiempo<1m TTL=111 Respuesta desde 192.168.1.99: bytes=32 tiempo<1m TTL=240 Respuesta desde 192.168.1.99: bytes=32 tiempo<1m TTL=66 Respuesta desde 192.168.1.99: bytes=32 tiempo<1m TTL=66 Respuesta desde 192.168.1.99: bytes=32 tiempo<1m TTL=66 Respuesta desde 192.168.1.99: bytes=32 tiempo<1m TTL=51 Respuesta desde 192.168.1.99: bytes=32 tiempo<1m TTL=190 Respuesta desde 192.168.1.99: bytes=32 tiempo<1m TTL=66 Traceroute G:\Documents and Settings\Administrador>tracert 192.168.1.99 Traza a la dirección maxi2011 [192.168.1.99] sobre un máximo de 30 saltos: 1 <1 ms <1 ms <1 ms maxi2011 [192.168.1.99] Traza completa. G:\Documents and Settings\Administradorping 192.168.1.99 Haciendo ping a 192.168.1.99 con 32 bytes de datos: Respuesta desde 192.168.1.99: bytes=32 tiempo<1m TTL=190 Respuesta desde 192.168.1.99: bytes=32 tiempo<1m TTL=190 Respuesta desde 192.168.1.99: bytes=32 tiempo<1m TTL=117 Respuesta desde 192.168.1.99: bytes=32 tiempo<1m TTL=117 Estadísticas de ping para 192.168.1.99: Paquetes: enviados = 4, recibidos = 4, perdidos = 0 (0% perdidos), Tiempos aproximados de ida y vuelta en milisegundos: Mínimo = 0ms, Máximo = 0ms, Media = 0ms G:\Documents and Settings\Administrador

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• how to use iptables to block the IP of device connected to openwrt router

  - by scola

  I have two routers(A,B).the A connect to internet with IP:192.168.1.1 The openwrt router B connect the lan of A by bridge with static IP:192.168.1.111. I am learning to use iptables to control the devices connected to B(wlan) . I use my phone to connect wifi of B,the phone's IP is IP:192.168.1.100.it can surf the internet normally. I want to block the phone's IP to make the phone can not connect to internet. refer to http://bredsaal.dk/some-small-iptables-on-openwrt-tips iptables -A input_wan -s 192.168.1.100 --jump REJECT iptables -A forwarding_rule -d 192.168.1.100 --jump REJECT but it do not work.the phone still connect to internet normally. and I tried other chain(INPUT,OUTPUT,FORWARD).so many chains confused me. iptables -I OUTPUT -o br-lan -s 192.168.1.100 -j DROP and it do not work again. I'm sure that the iptables have no problem. root@OpenWrt:/etc# iptables -L|grep Chain Chain INPUT (policy ACCEPT) Chain FORWARD (policy DROP) Chain OUTPUT (policy ACCEPT) Chain forward (1 references) Chain forwarding_lan (1 references) Chain forwarding_rule (1 references) Chain forwarding_wan (1 references) Chain input (1 references) Chain input_lan (1 references) Chain input_rule (1 references) Chain input_wan (1 references) Chain output (1 references) root@OpenWrt:/etc# ifconfig br-lan Link encap:Ethernet HWaddr 0C:82:68:97:57:BA inet addr:192.168.1.111 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::e82:68ff:fe97:57ba/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:14976 errors:0 dropped:0 overruns:0 frame:0 TX packets:7656 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:2851980 (2.7 MiB) TX bytes:1902785 (1.8 MiB) eth0 Link encap:Ethernet HWaddr 0C:82:68:97:57:BA UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:58201 errors:0 dropped:11 overruns:0 frame:0 TX packets:45012 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:54591348 (52.0 MiB) TX bytes:5711142 (5.4 MiB) Interrupt:4 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:312 errors:0 dropped:0 overruns:0 frame:0 TX packets:312 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:39961 (39.0 KiB) TX bytes:39961 (39.0 KiB) mon.wlan0 Link encap:UNSPEC HWaddr 0C-82-68-97-57-BA-00-48-00-00-00-00-00-00-00-00 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:4900 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:32 RX bytes:1223807 (1.1 MiB) TX bytes:0 (0.0 B) wlan0 Link encap:Ethernet HWaddr 0C:82:68:97:57:BA UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:37346 errors:0 dropped:0 overruns:0 frame:0 TX packets:49662 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:32 RX bytes:3808021 (3.6 MiB) TX bytes:54486310 (51.9 MiB) root@OpenWrt:/etc/config# cat network config 'interface' 'loopback' option 'ifname' 'lo' option 'proto' 'static' option 'ipaddr' '127.0.0.1' option 'netmask' '255.0.0.0' config 'interface' 'lan' option 'ifname' 'eth0' option 'type' 'bridge' option 'proto' 'static' option 'ipaddr' '192.168.1.111' option 'netmask' '255.255.255.0' option 'gateway' '192.168.1.1' option dns 192.168.1.1 and how to use iptables to control the network of wlan? Thanks in advance and sorry for poor English.

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• Why can't my networks reach each other?

  - by HOLOGRAPHICpizza

  We have two Buffalo WZR-HP-G300NH2 routers, with the default firmware, DD-WRT v24SP2-MULTI (10/31/11) std - build 17798. Each has a separate cable internet connection with a public static IP address. They are both in the 24.123.68.0/24 space. Both of them can contact pretty much the whole internet, and they can both be accessed out on the internet with no problem, but for some reason they can't talk to each other! When I try to ping one from the other I always get "Destination Host Unreachable". There are no strange routing or firewall rules in place. And they are both set to respond to pings, I can ping them from outside. Our main IT guy is going to call our ISP on Monday, but I'm impatient, so does anyone have any ideas?

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• How to create persistent static route on Mac OS X 10.6?

  - by kopobamypa

  I need to add static route on Mac OS. I found good description here Permanent Static Route Mac OS X 10.4.0 and followed the Roark Holz's (roarkh) solution. Now my problem: sometimes this solution works, sometimes does not. When it doesn't work I see these messages after boot in the Console Messages log: 06.05.10 9:34:13 com.apple.launchd[1] *** launchd[1] has started up. *** 06.05.10 9:34:46 com.apple.SystemStarter[30] Adding Static Route to 10.152 06.05.10 9:34:46 com.apple.SystemStarter[30] route: writing to routing socket: Network is unreachable 06.05.10 9:34:46 com.apple.SystemStarter[30] add net 10.152.0.0: gateway 192.168.1.234: Network is unreachable I want to know what is going on. How this kind of problem can be troubleshooted?

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• Alfa AWUSO36H 1W dysfunctional driver

  - by BrainStorm

  I recently purchased an Alfa AWUSO36H 1W wireless USB adapter for my notebook, in order to improve signal strength and quality. I'm currently using Linux Mint 11, and the it uses the RTL8187 driver for this adapter, I'm also using a 4dbi antenna, though I have others. The problem is that this adapter does exactly the opposite of what it should, actually my internal Broadcom BCM4313 adapter works way better than the alfa. Browsing is slow, some network applications don't even work, pings against Google.com on the internal adapter runs smooth, while in the alfa it gets like 25% packets lost or more! I'm less them 50 feet from my AP, the internal adapter gets 44/70 link quality, and the alfa gets around 60/70 (iwconfig output). Also the system always sets alfa power to 20dbm(100mw), then I have to do sudo iw set reg B0 to make it 30dbm(1000mw), but apparently no significant change. I've installed wireless-compat drivers, no change either. And worst of all, in Windows 7 it works way more smoothly for browsing, though I couldn't test it properly there. I hope its a driver problem, even if it's a pain to find/compile Linux drivers for a starter, I prefer it to a hardware problem where I would need to buy another adapter, since I have no money left (except for the cantenna pieces).

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