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  • Cisco Catalyst 3550 + Alteon 184 Load-Balancing Issues...

    - by upkels
    I have just deployed a couple Cisco Catalyst 3550 switches, and a couple Alteon 184 Web Switches for load-balancing. I can ping all RIPs and VIPs to/from the Alteon. Topology Before: (server) <- (Alteon) <- (Internet) Topology Now: (server) <- (3550) <- Alteon <- (Internet) Cisco Port Configuration (Alteon Uplink Port): description LB_1_PORT_9_PRIMARY switchport access vlan 10 switchport mode access switchport nonegotiate speed 100 duplex full Alteon Port 9 Configuration (VLAN 10 WAN): >> Main# /c/port 9/cur Current Port 9 configuration: enabled pref fast, backup gig, PVID 10, BW Contract 1024 name UPLINK >> Main# /c/port 9/fast/cur Current Port 9 Fast link configuration: speed 100, mode full duplex, fctl none, auto off Cisco Configuration (Load-Balanced Servers Port): description LB_1_PORT_1_PRIMARY switchport access vlan 30 switchport mode access switchport nonegotiate speed 100 duplex full Alteon Port 1 Configuration (VLAN 30 LOAD-BALANCED LAN): >> Main# /c/port 1/cur Current Port 1 configuration: enabled pref fast, backup gig, PVID 30, BW Contract 1024 name LB_PORT_1 >> Main# /c/port 1/fast/cur Current Port 1 Fast link configuration: speed 100, mode full duplex, fctl both, auto on Each of my servers are on vlan 10 and 30, properly communicating. I have tried to turn on VLAN tagging on the Alteon, however it seems to cause all communications to stop working. When I tcpdump -i vlan30 on any of the webservers, I see normal ARP communications, and some STP communications, which may or may not be part of the problem: ... 15:00:51.035882 STP 802.1d, Config, Flags [none], bridge-id 801e.00:11:5c:62:fe:80.8041, length 42 15:00:51.493154 IP 10.1.1.254.33923 > 10.1.1.1.http: Flags [S], seq 707324510, win 8760, options [mss 1460], length 0 15:00:51.493336 IP 10.1.1.1.http > 10.1.1.254.33923: Flags [S.], seq 3981707623, ack 707324511, win 65535, options [mss 1460], len gth 0 15:00:51.493778 ARP, Request who-has 10.1.3.1 tell 10.1.3.254, length 46 etc... I'm not sure if I've provided enough information, so please let me know if any more is necessary. Thank you!

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  • Change authentication wifi WPA to WEP on Windows 8

    - by Kites
    I use netsh wlan set hostednetwork mode=allow ssid=Kites key=phambaoViet netsh wlan start hostednetwork To share WiFi from LAN network on laptop (Windows 8) to my other device. When I show information netsh wlan show hostednetwork the supported authentication is WPA. My device support authentication WEP only. How can I change the authentication to WEP? Infomation: Interface name: Wi-Fi Driver : Qualcomm Atheros AR9002WB-1NG Wireless Network A dapter Vendor : Qualcomm Atheros Communications Inc. Provider : Microsoft Date : 03/07/2012 Version : 3.0.0.130 INF file : C:\Windows\INF\netathrx.inf Files : 2 total C:\Windows\system32\DRIVERS\athrx.sys C:\Windows\system32\drivers\vwifibus.sys Type : Native Wi-Fi Driver Radio types supported : 802.11b 802.11g 802.11n FIPS 140-2 mode supported : Yes 802.11w Management Frame Protection supported : Yes Hosted network supported : Yes Authentication and cipher supported in infrastructure mode: Open None Open WEP-40bit Open WEP-104bit Open WEP WPA-Enterprise TKIP WPA-Personal TKIP WPA2-Enterprise TKIP WPA2-Personal TKIP Vendor defined TKIP WPA2-Enterprise Vendor defined Vendor defined Vendor defined WPA-Enterprise CCMP WPA-Personal CCMP WPA2-Enterprise CCMP Vendor defined CCMP WPA2-Enterprise Vendor defined Vendor defined Vendor defined WPA2-Personal CCMP Vendor defined Vendor defined Authentication and cipher supported in ad-hoc mode: Open None Open WEP-40bit Open WEP-104bit Open WEP WPA2-Personal CCMP Vendor defined Vendor defined

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  • Internal/External Moodle - DNS

    - by Chief17
    Network diagram: I have a moodle (a VLE) setup that I want to be internally and externally accessible. The green route on the diagram below is the route I would like the traffic to take when the user is inside the LAN, and the red route is seemingly what it does take. The website has a domain name (like most websites do). From the User PC, if I ping the domain name, I get the internal IP of the webserver (because of a hosts file entry), if I nslookup the domain name I also get the internal IP of the webserver (because of an A record on my DNS server). Running the same two commands on the webserver gives me the webservers external IP. (going well so far) If I use PHPs gethostbyname() on the moodle website and use domain name as a parameter (getting php/apache to resolve the hostname) it returns the exernal IP of the webserver (good news, DNS seems to be doing what I want it to). All things so far seem to be going well. The only thing that is confusing me and preventing the moodle single sign on from working is the fact that if I get moodle to show my IP address, it says that it is an external one (outside my NATting firewall) when it should show an internal IP. This is the issue, any ideas on how to go about resolving this? Any ideas on tests I can perform (I have also tried a tracert and the request goes directly to the webserver), anything? Thanks all!

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  • internet-based sync software that will keep running after Windows Live Sync stops doing PC-to-PC-syncs?

    - by Warren P
    According to the wikipedia page, Microsoft Live Sync will shortly stop offering the PC-to-PC sync service. There are lots of apps to sync two PCs on the same LAN, but I want to sync two PCs that are in different cities, across the internet, traversing two different NATs, and that requires some kind of service running in the internet that both connect into. There is already a few questions about syncing folders and files, but this is not a duplicate because none of them answer this basic question: Microsoft Live Sync works better than RSYNC, or any of the linked SYNC solutions in any of the "not really duplicates" because it works even when the two PCs have NAT and firewalls between them that forbid direct connectivity, because Windows Live Sync has a free always-on internet server that all the client PCs connect into. I'm looking for a FREE (no-fees) Microsoft Live Sync work-alike PC-to-PC sync solution that works between PCs and Macs, at least, as well as between PCs, and works behind NAT and firewalls at least as well as Microsoft's solution. (Note that Microsoft's solution makes only outbound socket calls to a microsoft server, so this solution must necessarily include a server-hub component that is hosted publically on a free site and which does not require that I set up and manage and pay for my own public internet hosting site) Hint: None of the answers in the linked duplicate are equivalent (PureSync,FreeFileSync,BestSync 2010,SyncButler,Comodo BackUp,QuickShadow,Gbridge) in that none of them work for the PC to Mac situation, where firewalls and nats prevent direct connection, or else they require money to be paid. When Microsoft Live Sync / Live Mesh finally kills direct PC-to-PC mode, the limitation will be that you will have to pay for more than 25 GB of cloud service, and you can then only sync PC #1 to PC #2 if you first sync to the cloud, then down to other clients. I can currently sync 100 gb of data from one computer to another, only temporarily "moving the data" through Microsoft's data servers without using up my Skydrive storage quota.

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  • Natting trafic from a tunnel to internet

    - by mezgani
    I'm trying to set up a GRE tunnel between a linux box and a router (LAN), and I'm having a few problems which seem to depend to my iptables configuration. Watching with tcpdump on linux box, I can see packets coming with flags GREv0, all i need right know is forwarding this data to internet, found here some trace : iptables -F iptables -X iptables -P INPUT ACCEPT iptables -P FORWARD ACCEPT iptables -P OUTPUT ACCEPT iptables -t nat -F iptables -t nat -X iptables -t nat -P PREROUTING ACCEPT iptables -t nat -P POSTROUTING ACCEPT iptables -t nat -P OUTPUT ACCEPT iptables -t mangle -F iptables -t mangle -X iptables -t mangle -P PREROUTING ACCEPT iptables -t mangle -P OUTPUT ACCEPT iptables -A INPUT -p 47 -j ACCEPT iptables -A FORWARD -i ppp0 -o cloud -j ACCEPT iptables -A FORWARD -i cloud -o ppp0 -j ACCEPT iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT iptables -t nat -A POSTROUTING -o ppp0 -j MASQUERADE echo "1" /proc/sys/net/ipv4/ip_forward cloud Link encap:UNSPEC HWaddr C4-CE-7A-2E-F2-BF-DD-C0-00-00-00-00-00-00-00-00 inet adr:10.3.3.3 P-t-P:10.3.3.3 Masque:255.255.255.255 UP POINTOPOINT RUNNING NOARP MTU:1476 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:124 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:0 RX bytes:0 (0.0 B) TX bytes:10416 (10.1 KiB) Table de routage IP du noyau Destination Passerelle Genmask Indic MSS Fenêtre irtt Iface 196.206.120.1 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0 192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 10.3.3.0 0.0.0.0 255.255.255.0 U 0 0 0 cloud 0.0.0.0 196.206.120.1 0.0.0.0 UG 0 0 0 ppp0 root@aldebaran:~# ip route 196.206.120.1 dev ppp0 proto kernel scope link src 196.206.122.46 192.168.0.0/24 dev eth0 proto kernel scope link src 192.168.0.18 10.3.3.0/24 dev cloud scope link default via 196.206.120.1 dev ppp0

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  • ServerName wildcards in Apache name-based virtual hosts?

    - by Martijn Heemels
    On our LAN I've set up several 'fake' TLDs in the DNS server, with the intention of using them for Apache name-based virtual hosting. I'd like to combine this with mass-virtual-hosting (i.e. VirtualDocumentRoot) on an Ubuntu 10.04 LAMP server. However, I can't get it to select the right vhost! Here is a summary of the Apache config: NameVirtualHost 10.10.0.205 <VirtualHost 10.10.0.205> ServerName *.test VirtualDocumentRoot /var/www/%-3.0.%-2/test/%1/ CustomLog /var/log/apache2/access.log vhost_combined </VirtualHost> <VirtualHost 10.10.0.205> ServerName *.dev VirtualDocumentRoot /var/www/%-3.0.%-2/dev/%1/ CustomLog /var/log/apache2/access.log vhost_combined </VirtualHost> A hostname such as www.domain.com.dev, correctly resolves to 10.10.0.205, but always selects the top vhost, instead of the bottom one, which matches more closely. I was under the impression that Apache would first try to match the ServerName before defaulting to the top vhost for a given IP. What am I doing wrong? Or is this not possible and must I use another IP for each TLD? apachectl -S outputs (trimmed): 10.10.0.205:* is a NameVirtualHost default server *.test port * namevhost *.test port * namevhost *.dev

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  • Cannot browse remote networks even with WINS configured

    - by paradroid
    As the NetBIOS protocol acts on Layer 2 and so is not routable, In order to enable network browsing of remote networks, WINS has been installed and configured on two domain controllers, both of which are on different networks. The WINS servers seem to be replicating with eachother, and each has 127.0.0.1 set as the Primary WINS Server in each of their LAN interface properties, with nothing entered for Secondary WINS Server. The DC which holds the PDC Emulator FSMO role has the Computer Browser service running and set to Auto start, and it has the WINS/NBT node type network setting at 0x8 (H-node - Hybrid node). Remote network browsing does not work. Is the WINS/NBT node type correct for this scenario? The reason why I think it may not be the right one is because I set the DHCP Server's 046 WINS/NBT node type option to 0x8 as well, after which the DHCP clients started to disappear from the Network folders. When that option is not set, does it default to B-node (Broadcast node)? Or could it be a problem with the WINS servers setup?

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  • VirtualBox communication from Linux to/from Windows 7

    - by J. Otto Tennant
    VirtualBox is running in Windows 7 as the host. VirtualBox has the two modifications (one is called Guest Additions; don't remember the other). The Virtual machine has "bridged" networking selected. I have SAMBA set up (now, the problem may be here; it has been three or four years since I last did this) on the Linux guest machine. Neither guest nor host sees the other. From the Windows 7 command prompt, the IP address of the Linux guest pings. The IP address of another computer (a separate Windows 7 on the wireless network) pings from the Linux guest. (I have no idea what IP address the Windows 7 host itself has. The output of "netstat" does not seem to be useful.) So, it seem to me that something should be working. The only workgroup on the LAN is inventively named WORKGROUP. SMB4K should be seeing something. There must be a simple setup step that I am missing. (FWIW, there are two processes running smbd, and no process is running nmbd. YaST says that nmbd is set to run. I am not sure what this means.)

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  • Vista laptop 1 connects to network but Vista laptop 2 doesn't

    - by Jaips
    (Sorry if this is a dulipcate. I did a hunt but couldn't find matching question) We recently got a new router for our network (thomson TG585v8). It was already pre-configured by the ISP and was easy to setup. Both Vista laptops in this home network connected without trouble as well a iPod touch, all via wifi. In the last two days one of the laptops has been unable to connect cleanly to the network (connects as unidentified network). The other laptop, and iPod have not had any issues. I can't think of anything that has changed to make this happen now. I have rebooted the laptop and the router. I have updated the laptop wireless driver I have checked the laptop is set to automatically get IP I have logged into the router which correctly identifies all three wireless devices. The problem laptop connects via LAN without issue. Some things that may or may not matter: The problem laptop also sometimes uses a 3G dongle Both laptops use Windows Live Mesh to sync folders Laptop is usually set to go to sleep NB: it seems this is an intermittent issue, after an hour (since i noticed it) it seems to have fixed itself. Would love ideas though to solve this problem for good.

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  • OpenVPN with MacOS X Client and same subnets in local and remote net.

    - by Daniel
    I have a homenetwork 192.168.1.0/24 with gteway 192.168.1.1 and a remote network with the same parameters. Now I want to create a OpenVPN tunnel between those networks. I have no problems with Windows, because Windows routes everything to 192.168.1.0/24 except 192.168.1.1 throught the tunnel. On MacOS X however I see the folling line in the Details window: 2010-05-10 09:13:01 WARNING: potential route subnet conflict between local LAN [192.168.1.0/255.255.255.0] and remote VPN [192.168.1.0/255.255.255.0] When I list the routes I get the following: Internet: Destination Gateway Flags Refs Use Netif Expire default 192.168.1.1 UGSc 13 3 en1 127 localhost UCS 0 0 lo0 localhost localhost UH 12 3589 lo0 169.254 link#5 UCS 0 0 en1 192.168.1 link#5 UCS 1 0 en1 192.168.1.1 0:1e:e5:f4:ec:7f UHLW 13 17 en1 1103 192.168.1.101 localhost UHS 0 0 lo0 192.168.6 192.168.6.5 UGSc 0 0 tun0 192.168.6.5 192.168.6.6 UH 1 0 tun0 My Interfaces are en1 - My local Wifi network tun0 - The tunnel interface As can be seen from the routes above there is no entry for 192.168.1.0/24 that routes the traffic through the tunnel interface. When I manually route a single IP like 192.168.1.16 over the tunnel gateway 192.168.6.6, this works. Q: How do I set up my routes in MacOS X for the same behaviour as on windows, to route everything except 192.168.1.1 through the tunnel, but leave the default gateway to be my local 192.168.1.1 ?

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  • Inconsistent SMTP Access

    - by Mike Hanson
    I have a mail server setup on Windows Server 2008. All was working fine, until I wanted to map a drive on the server so that I can access files on another machine. Windows prompted me to configure Network Discovery, which I did with the "Home/Office" option rather than "Public". After that, several access points that worked before stopped working, like VNC, SMTP, etc. After reinstalling those packages, things appeared to be working again. Unfortunately, problems have returned with my SMTP server. I can use an web-based SMTP tester, and it connects in 62msec (as expected). However, if I telnet from my machine on the same LAN, it takes more than 20 seconds to connect! When I try to send messages from Outlook, it times out entirely with the message: Sending' reported error (0x80042109) : 'Outlook cannot connect to your outgoing (SMTP) e-mail server. If you continue to receive this message, contact your server administrator or Internet service provider (ISP).' I've checked the firewall settings, I've tried configuring it to use port 587 instead of 25, but nothing gets around this problem. Does any have any useful insights? Thanks in advance!

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  • open source solution to a gateway for a network of a housing cooperative of 150 people

    - by SirDinosaur
    i just inherited a barely functioning network for a student housing cooperative of about 150 people. in it's current state, as i understand it from the previous person in charge of the network, we have working wireless access points and working ethernet cords going to working gigabit switches going to a barely functioning gateway (right now a simple home router) to one of three possible outbound connections. it is possible to connect to the network through the wireless or ethernet, but especially during peak hours, packets / connections are likely dropped or otherwise get no response. my intuition tells me to replace the gateway with something that can handle multiple outbound connections (WAN) and one inbound connection (LAN), while the rest of the network seems suitable for now. i'm somewhat knowledgable in Linux (been using Debian after first Arch Linux) and i want to use as much open source as possible, but i'm confused whether or not a simple server that i could easily understand will work for this situation. do i need specialized hardware to handle the switching more effectively? if so, what are my options? (i found this, thoughts?) or if a Debian server would work, anything else i should about the specs required for this type of server? also links to any useful information on using open source to maintain this type of network would be most appreciated. <3 P.S. crossposted http://redd.it/yybp2.

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  • Barcodes and Bugs

    - by Tim Dexter
    A great mail from Mike at Browning last week. He has been through the ringer getting his BIP barcoding sorted out but he's now out of the woods. Here's the final result. By way of explanation, an excerpt from Mike's email:   This is an example of the GS1_128 carton shipping labels we are now producing with BIP in our web application for our vendors who drop ship products to our dealers. It produces 4 labels per printed page, in PDF format, on peel & stick label paper. Each label has a unique carton number, and a unique carton serial number in the SSCC-18 barcode. This example is for Cabelas (each customer has slightly different GS1-128 label format requirements – custom template for each - a pain!). I am using custom java encoders I wrote for the UPC and SSCC-18 barcodes, and a standard encoder (code128b) for the ShipTo zip barcode. Is there any way yet to get around that SUPER ANNOYING bug when opening the rtf template in MS Word, and it replaces my xsl code text in the barcode fields with gibberish??? Every time I open it I have to re-enter all the xsl code. Not only to be able to read & edit it, but also to get it to work in BIP (BIP doesn’t like the gibberish if I upload the template that has it). Mike's last point, regarding the annoying bug in the template builder, is one that I have experienced occasionally. The development team have looked at it and found it to be an issue with MSWord and not a plugin problem. That's all well and good but how can you get around it? Well, you can take advantage of the font mapping that BIP offers to get the barcodes into the PDF output. As many of you know, getting a barcode font to appear in the PDF output, you need employ the use of the xdo.cfg file in the template builder config directory.You would normally have an entry such as this:         <font family="Code 128" style="normal" weight="normal">        <truetype path="C:\windows\fonts\128R00.TTF" />       </font>to map a barcode font to get it to render in the PDF output when testing from the template builder plugin.   Mike's issue is only present when the formfield is highlighted with a barcode font. The other fields in the template are OK. What you can do to get around the issue is to bend the config entry to get around having to use the barcode font in the template at all. Changing the entry to something like:         <font family="Calibri" style="normal" weight="normal">        <truetype path="C:\windows\fonts\128R00.TTF" />       </font>   Note that we are mapping the Calibri; a humanly readable and non 'erroring' font in the template, to the code 128 barcode font. Where you used to highlight the field with the barcode in MSWord, you now use the Calibri font instead. At run time, BIP will go look for the Calibri font mapping and will drop in the Code128 font. Of course, Calibri is an example; you need to pick a font that you are not going to use any where else in the layout.

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  • LDAP, Active Directory and bears, oh my!

    - by Tim Post
    What I have: Workstations running Ubuntu Jaunty mounting /home on a remote NFS server. User accounts are still created locally on each individual workstation. Workstations running Windows XP / Vista NFS server (as noted above) Windows 2008 server All machines share a single private network (LAN). What I need to accomplish: A single, intuitive (GUI driven) place for an office administrator to create user accounts. This should let anyone login to their (linux or windows) workstation, then fire up remote desktop and use the same login to the Windows 2008 server, from any machine on the network. I have read so much on samba, LDAP vs AD, etc and now I'm even more confused than I was before I began researching the problem. Ideally, Linux and Windows users should be able to get to their local files once logged into the Win2008 server. I am a programmer, not an interoperability guru and I'm completely lost on where to even start trying to accomplish this, plus I've run out of things to Google. How would you do this? Is it even possible?

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  • Windows server 2008R2 routing with single NIC

    - by Fabian
    I'm trying to duplicate a Linux server configuration to a windows server 2008R2 box. Basicaly this linux server acts as a router, but it is doing its job with only 1 interface (1 NIC). Here is the network configuration in place (I cannot change it) : INTERNET <== Router (local ip = 194.168.0.3) <== linux Server (ip : 194.168.0.2). The router is configured with a DMZ to 194.168.0.2, and only allow this IP to connect to internet (Cannot change this router configuration). The linux server is configured with a default gateway to 194.168.0.3, with the option : "Act as router". All other computer on the lan have this configuration (given by DHCP) : IP range : 194.168.0.X MASK : 255.255.255.0 Default gateway : 194.168.0.2 And everything is working perfectly. I'm trying to reproduce this way of routing with only one NIC from a windows server 2008R2, but it seems that you cannnot do it with only one NIC (all exemples I see are refering to 2 NIC with 2 different network). Does someone have an idea how to achieved this in Windows server 2008R2 ? Tx you for your help ! Fabian.

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  • Ubuntu 10.04 and fedora 14 grub conflict

    - by sawren
    I tried to triple boot Windows xp, Fedora 14 and Ubuntu 10.04. I first installed Windows xp, then fedora followed by Ubuntu. The problem is that i don't get option to boot Ubuntu while Xp boots fine. It seems Ubuntu was unable to replace Fedora's grub with its own at MBR. Looking at their grub conf file, Fedora and Ubuntu identifies same harddisk as two different devices and i do have another 80 GB harddisk which doesn't have any OS. Below is the details on my partitions and partial information from grub files of both OS. Device Boot Start End Blocks Id System /dev/sda1 * 63 40965749 20482843+ 7 HPFS/NTFS /dev/sda2 102414436 312576704 105081134+ f W95 Ext'd (LBA) /dev/sda3 40965750 102414374 30724312+ 83 Linux - /Home (for fedora) /dev/sda5 102414438 204812684 51199123+ 7 HPFS/NTFS /dev/sda6 204812748 253634219 24410736 83 Linux -- ubuntu /dev/sda7 253634283 302455754 24410736 83 Linux -- fedora /dev/sda8 302455818 312576704 5060443+ 82 Linux swap / Solaris grub.cfg from ubuntu ### BEGIN /etc/grub.d/10_linux ### menuentry 'Ubuntu, with Linux 2.6.32-21-generic' --class ubuntu --class gnu-linux --class gnu --class os { recordfail insmod ext2 set root='(hd1,7)' search --no-floppy --fs-uuid --set cd55e078-a2c1-4d8a-9e87-ae838b6f4a05 linux /boot/vmlinuz-2.6.32-21-generic root=UUID=cd55e078-a2c1-4d8a-9e87-ae838b6f4a05 ro quiet splash initrd /boot/initrd.img-2.6.32-21-generic } menuentry 'Ubuntu, with Linux 2.6.32-21-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os { recordfail insmod ext2 set root='(hd1,7)' search --no-floppy --fs-uuid --set cd55e078-a2c1-4d8a-9e87-ae838b6f4a05 echo 'Loading Linux 2.6.32-21-generic ...' linux /boot/vmlinuz-2.6.32-21-generic root=UUID=cd55e078-a2c1-4d8a-9e87-ae838b6f4a05 ro single echo 'Loading initial ramdisk ...' initrd /boot/initrd.img-2.6.32-21-generic } ### END /etc/grub.d/10_linux ### ### BEGIN /etc/grub.d/20_memtest86+ ### menuentry "Memory test (memtest86+)" { insmod ext2 set root='(hd1,7)' search --no-floppy --fs-uuid --set cd55e078-a2c1-4d8a-9e87-ae838b6f4a05 linux16 /boot/memtest86+.bin } menuentry "Memory test (memtest86+, serial console 115200)" { insmod ext2 set root='(hd1,7)' search --no-floppy --fs-uuid --set cd55e078-a2c1-4d8a-9e87-ae838b6f4a05 linux16 /boot/memtest86+.bin console=ttyS0,115200n8 } ### END /etc/grub.d/20_memtest86+ ### ### BEGIN /etc/grub.d/30_os-prober ### menuentry "Microsoft Windows XP Professional (on /dev/sdb1)" { insmod ntfs set root='(hd1,1)' search --no-floppy --fs-uuid --set cad48cc6d48cb5eb drivemap -s (hd0) ${root} chainloader +1 } menuentry "Fedora (2.6.35.14-96.fc14.i686) (on /dev/sdb6)" { insmod ext2 set root='(hd1,6)' search --no-floppy --fs-uuid --set 6aee34cf-f77a-489a-9361-85d07194b84b linux /boot/vmlinuz-2.6.35.14-96.fc14.i686 ro root=UUID=6aee34cf-f77a-489a-9361-85d07194b84b rd_NO_LUKS rd_NO_LVM rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us rhgb quiet initrd /boot/initramfs-2.6.35.14-96.fc14.i686.img } menuentry "Fedora (2.6.35.6-45.fc14.i686) (on /dev/sdb6)" { insmod ext2 set root='(hd1,6)' search --no-floppy --fs-uuid --set 6aee34cf-f77a-489a-9361-85d07194b84b linux /boot/vmlinuz-2.6.35.6-45.fc14.i686 ro root=UUID=6aee34cf-f77a-489a-9361-85d07194b84b rd_NO_LUKS rd_NO_LVM rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us rhgb quiet initrd /boot/initramfs-2.6.35.6-45.fc14.i686.img } ### END /etc/grub.d/30_os-prober ### grub.conf from fedora default=0 timeout=5 splashimage=(hd0,5)/boot/grub/splash.xpm.gz hiddenmenu title Fedora (2.6.35.14-96.fc14.i686) root (hd0,5) kernel /boot/vmlinuz-2.6.35.14-96.fc14.i686 ro root=UUID=6aee34cf-f77a-489a-9361-85d07194b84b rd_NO_LUKS rd_NO_LVM rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us rhgb quiet initrd /boot/initramfs-2.6.35.14-96.fc14.i686.img title Fedora (2.6.35.6-45.fc14.i686) root (hd0,5) kernel /boot/vmlinuz-2.6.35.6-45.fc14.i686 ro root=UUID=6aee34cf-f77a-489a-9361-85d07194b84b rd_NO_LUKS rd_NO_LVM rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us rhgb quiet initrd /boot/initramfs-2.6.35.6-45.fc14.i686.img title Other rootnoverify (hd0,0) chainloader +1

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  • how i can identify which process is making UDP traffic on linux?

    - by boos
    my machine is continously making udp dns traffic request. what i need to know is the PID of the process generating this traffic. The normal way in TCP connection is to use netstat/lsof and get the process associated at the pid. Is UDP the connection is stateles, so, when i call netastat/lsof i can see it only if the UDP socket is opened and it's sending traffic. I have tried with lsof -i UDP and with nestat -anpue but i cant be able to find wich process is doing that request because i need to call lsof/netstat exactly when the udp traffic is sended, if i call lsof/netstat before/after the udp datagram is sended is impossible to view the opened UDP socket. call netstat/lsof exactly when 3/4 udp packet is sended is IMPOSSIBLE. how i can identify the infamous process ? I have already inspected the traffic to try to identify the sended PID from the content of the packet, but is not possible to identify it from the contect of the traffic. anyone can help me ? I'm root on this machine FEDORA 12 Linux noise.company.lan 2.6.32.16-141.fc12.x86_64 #1 SMP Wed Jul 7 04:49:59 UTC 2010 x86_64 x86_64 x86_64 GNU/Linux

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  • Simple Linux program that takes any HTTP/HTTPS request and returns a single page?

    - by ultrasawblade
    I have a Linux box operating as router. There's a NIC that's connected to the internet (WAN), a NIC connected to an 8-port GbE switch (LAN), and a NIC connected to a Linksys wireless N-router (WLAN). Routing between everything is working perfectly. I have security completely disabled on the wireless router, but the WLAN NIC is firewalled such that it will only accept DNS queries and PPTP VPN connections. Currently HTTP/HTTPS traffic and everything else is blocked. I would like to run something that listens on port 80/443 of the WLAN NIC, and, for non VPN'ed connections, given any HTTP/HTTPS request it will return a single webpage saying "Unauthenticated" and explain how to sign into the VPN. A transparent proxy seems to be what I need, but my searches all seem to direct me to Squid, which is already running on my server and seems overkill for this simple task. Is there a simpler, lightweight program out there that does just this or should I just suck it up and run two instances of Squid (or figure out how to configure it)? Or, is this entire VPN thing I'm doing complete nonsense and I should just enable encryption on the wireless router?

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  • Enable grub boot menu on new system

    - by Remus Rigo
    I have installed Ubuntu 11.04 and I would like to see the boot menu when the system starts (by default it is hidden or the timeout=0) # # DO NOT EDIT THIS FILE # # It is automatically generated by grub-mkconfig using templates # from /etc/grub.d and settings from /etc/default/grub # ### BEGIN /etc/grub.d/00_header ### if [ -s $prefix/grubenv ]; then set have_grubenv=true load_env fi set default="0" if [ "${prev_saved_entry}" ]; then set saved_entry="${prev_saved_entry}" save_env saved_entry set prev_saved_entry= save_env prev_saved_entry set boot_once=true fi function savedefault { if [ -z "${boot_once}" ]; then saved_entry="${chosen}" save_env saved_entry fi } function recordfail { set recordfail=1 if [ -n "${have_grubenv}" ]; then if [ -z "${boot_once}" ]; then save_env recordfail; fi; fi } function load_video { insmod vbe insmod vga insmod video_bochs insmod video_cirrus } insmod part_msdos insmod ext2 set root='(hd0,msdos1)' search --no-floppy --fs-uuid --set=root 44f311b4-0b40-4d10-b004-78108539fc39 if loadfont /usr/share/grub/unicode.pf2 ; then set gfxmode=auto load_video insmod gfxterm fi terminal_output gfxterm insmod part_msdos insmod ext2 set root='(hd0,msdos1)' search --no-floppy --fs-uuid --set=root 44f311b4-0b40-4d10-b004-78108539fc39 set locale_dir=($root)/boot/grub/locale set lang=en_US insmod gettext if [ "${recordfail}" = 1 ]; then set timeout=-1 else set timeout=10 fi ### END /etc/grub.d/00_header ### ### BEGIN /etc/grub.d/05_debian_theme ### insmod part_msdos insmod ext2 set root='(hd0,msdos1)' search --no-floppy --fs-uuid --set=root 44f311b4-0b40-4d10-b004-78108539fc39 insmod jpeg if background_image /boot/grub/boot.jpg; then true else set menu_color_normal=white/black set menu_color_highlight=black/light-gray fi ### END /etc/grub.d/05_debian_theme ### ### BEGIN /etc/grub.d/10_linux ### if [ ${recordfail} != 1 ]; then if [ -e ${prefix}/gfxblacklist.txt ]; then if hwmatch ${prefix}/gfxblacklist.txt 3; then if [ ${match} = 0 ]; then set linux_gfx_mode=keep else set linux_gfx_mode=text fi else set linux_gfx_mode=text fi else set linux_gfx_mode=keep fi else set linux_gfx_mode=text fi export linux_gfx_mode if [ "$linux_gfx_mode" != "text" ]; then load_video; fi menuentry 'Ubuntu, with Linux 2.6.38-8-generic' --class ubuntu --class gnu-linux --class gnu --class os { recordfail set gfxpayload=$linux_gfx_mode insmod part_msdos insmod ext2 set root='(hd0,msdos1)' search --no-floppy --fs-uuid --set=root 44f311b4-0b40-4d10-b004-78108539fc39 linux /boot/vmlinuz-2.6.38-8-generic root=UUID=44f311b4-0b40-4d10-b004-78108539fc39 ro quiet splash vt.handoff=7 initrd /boot/initrd.img-2.6.38-8-generic } menuentry 'Ubuntu, with Linux 2.6.38-8-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os { recordfail set gfxpayload=$linux_gfx_mode insmod part_msdos insmod ext2 set root='(hd0,msdos1)' search --no-floppy --fs-uuid --set=root 44f311b4-0b40-4d10-b004-78108539fc39 echo 'Loading Linux 2.6.38-8-generic ...' linux /boot/vmlinuz-2.6.38-8-generic root=UUID=44f311b4-0b40-4d10-b004-78108539fc39 ro single echo 'Loading initial ramdisk ...' initrd /boot/initrd.img-2.6.38-8-generic } ### END /etc/grub.d/10_linux ### ### BEGIN /etc/grub.d/20_linux_xen ### ### END /etc/grub.d/20_linux_xen ### ### BEGIN /etc/grub.d/20_memtest86+ ### menuentry "Memory test (memtest86+)" { insmod part_msdos insmod ext2 set root='(hd0,msdos1)' search --no-floppy --fs-uuid --set=root 44f311b4-0b40-4d10-b004-78108539fc39 linux16 /boot/memtest86+.bin } menuentry "Memory test (memtest86+, serial console 115200)" { insmod part_msdos insmod ext2 set root='(hd0,msdos1)' search --no-floppy --fs-uuid --set=root 44f311b4-0b40-4d10-b004-78108539fc39 linux16 /boot/memtest86+.bin console=ttyS0,115200n8 } ### END /etc/grub.d/20_memtest86+ ### ### BEGIN /etc/grub.d/30_os-prober ### if [ "x${timeout}" != "x-1" ]; then if keystatus; then if keystatus --shift; then set timeout=-1 else set timeout=0 fi else if sleep --interruptible 3 ; then set timeout=0 fi fi fi ### END /etc/grub.d/30_os-prober ### ### BEGIN /etc/grub.d/40_custom ### # This file provides an easy way to add custom menu entries. Simply type the # menu entries you want to add after this comment. Be careful not to change # the 'exec tail' line above. ### END /etc/grub.d/40_custom ### ### BEGIN /etc/grub.d/41_custom ### if [ -f $prefix/custom.cfg ]; then source $prefix/custom.cfg; fi ### END /etc/grub.d/41_custom ###

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  • DLINK WBR-1310B Wireless Router seems to hang...

    - by Ira Baxter
    I have a brand new DLINK-1310B Wireless Router (box never before opened, although I bought it the neighborhood computer junk store). I am using it at home (and in fact am using it this instant from a wireless laptop). When operative, I can ping it at 192.168.0.1, and I can log into it from the PC attached to by LAN and from the wireless PC at //192.168.0.1. In the course of the day since I've installed, it seems to have locked up 3 times. Each time the symptoms are my web browser (or other internet service) stops with a "No internet connection" error. Attempts to contact the router via 192.168.0.1 get no reaction, from either the wireless laptop or from the hardwired PC sitting next to it. It doesn't respond to pings to that address either. Rebooting fixes it. Its brand new. I've seen discussion in other questions about aging cheap electronics. Its too new to be aged. Anyboyd else seen this behavior with a DLINK-1310? Or do I just need to exchange it for another and try again? (I hate rolling dice, I bought the DLINK becuase a previous Linksys died of apparant heating problems). Remarkably, nobody talks about how much software is in a router. Is the stuff just buggy?

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  • What is the IPv6 equivalent to IPv4 RFC1918 addresses?

    - by Kumba
    Having a hard time wrapping my head around IPv6 here. A lot of the lingo seems targeted at enterprise-level IPv6 deployments, discussing link-local, site-local, global unicast, scopes, etc. Not a lot of solid information on really small networks, like home networks. I want to check my thinking and make sure I am getting the correct translations from IPv4-speak to IPv6-speak. The first question is, what's the equivalent of RFC1918 for IPv6? Initial searches suggested there was no equivalent. Then I stumbled upon Unique Local Addresses (RFC4193), and that states that all ULA's should be assigned the prefix fc00, followed by a 40-bit random number in the routing prefix. This random number is to "prevent collisions when two IPv6 networks are interconnected" -- again, another reference to an enterprise-level function. If I have a small local LAN at home, numbered using 192.168.4.0/24, what's my equivalent in IPv6's ULA scope? Assuming I will never, ever, tie that IPv6 address into the real internet (a router will NAT & firewall it), can I ignore the RFC to an extent and go with fc00::4:0/120? It also seems that any address in fc00::/7 are to be globally routable. Does this mean I'll need extra protections so my router would not automatically start advertising these private IPv6 addresses to the world? Second question, what's this link-local thing? Reading suggests a default-assigned address in the fe80::/10 range that has the last 64bits of the address comprised of the interface's MAC address. Seems to be required, too, but I'm annoyed by the constant discussion of it in relation to enterprise networks. Third question, what is scope id for? Seems to be yet another term tossed around in relation to enterprise networks, especially when interconnecting them, but almost no explanation on the smaller home network level. Can I see a scope ID AND CIDR notation used together? I.e., fc00::4:0/120%6, or are scope IDs only supposed to be applied to a single /128 IPv6 address?

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  • Find the IP of the router between me and main router/gateway?

    - by Crash893
    I have a Netgear router that is the main router/gateway in and out of the network. Then I have a Linksys 54g router with WiFi that we use as are main WiFi access point The Cat5 runs from the router to the WiFi routers LAN port (not WAN). And then if you connect to that WAP you are basically on the network. I want to be able to find out what the IP address of that WAP is but so far I can't figure out how to: I've tried doing a tracert to the gateway IP but I get nothing. I've scanned all the IP addressed in the network. I've gone to the Netgear main router and looked under attached devices but it doesn't say anything. Any ideas on how I can figure out how to administer it? (I do have limited physical access but my attempt to plug into it came back with a faulty IP (in the 169 range where the rest of the office is 192.168...). I never set this router up to begin with so I'm reluctant to just kill it with the reset button because I can't get into see what the settings are set to.

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  • Can't access certain web sites - reset router, any ideas?

    - by IniTech
    EDIT: This problem was resolved by my ISP - had to do with damaged fiber in one of their locations. Thanks to everyone that helped. Not sure if this is the right site (I'm a StackOverflow user) so I thought I'd give it a shot. I'm having trouble connecting to certain sites on any of the 3 machines that are on my LAN. The following sites are returning "Problem Loading Page - The connection has timed out" Sourceforge.net CNet.com Microsoft.com OpenDNS.com even my company's webiste I was worried about possible malware/virus, but I don't think that is the case (given the inability to access my company's site and the fact that all 3 machines are having the same issues.) I've tried with IE8, FF, and Chrome I have reset my router (WRT54G) and my machine(s) multiple times. EDIT: It is also worth noting that this page spins constantly and no avatars show up (I'm assuming it is trying to access gravatar.com with no success.) EDIT: I have the same issues directly connected to the modem. So, any router config is probably not the issue I'm a programmer, not a network guy - any ideas?

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  • how would it be possible to discover a cable modem's MAC remotely?

    - by amateurenthusiast
    i was reading the back archives of a canadian privacy law blog, and he linked to a judicial decision. apparently as part of an investigation in which were used yahoo chat and google's old 'hello' image trading program the officer was able to determine a suspect's modem's MAC address: In order to determine who STEPHTOSH was, the officer did a trace on a programme called WHO IS in an effort to learn from where STEPHTOSH was coming. WHO IS is a command program available to the public. The officer was able to ascertain that the person using the name STEPHTOSH was a Rogers Internet customer. The officer was able to obtain the Internet Protocol address, also known as the I.P. There is only one location for an I.P., which is unique to that subscriber. By use of the website known as DNS STUFF.com, one is able to find with which company this I.P. is registered. It was ascertained that the I.P. address used by STEPHTOSH was registered to Rogers Cable, from the Toronto area. The officer also learned the Cable Modem MAC address used by STEPHTOSH. This was all the information the officer was able to amass. now it was my understanding that the MAC address of any given device can only be accessed if you're only one 'hop' away on the Internet. the suspect in question was in Markham and the officer part of the Toronto Police, so it's conceivable that they both might have used Rogers internet. but would that still put them only one 'hop' away from each other? i thought the first hop after the modem was usually the ISP? and if he'd used a netBIOS query against this guy's machine it would return the ethernet card's MAC, not the modem's. so is this guy on the same rogers subnet as the suspect's cable modem, is that functionality part of google's Hello (i could only think that it would be possible if Hello operated as a virtual LAN or something), does the officer have remote access to the arp caches of the routers at Rogers or is he just full of crap and lying to make his case stronger?

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  • How to Load Balance 2 Internet Connections on a Windows 7 machine?

    - by Jimmy Chandra
    It's sort of related to this particular question, but that one is on Mac. I am looking for similar solution on Windows 7. I have 2 network connections: (Connection A) Wireless terminal connecting to ISP A (3G / EVDO internet provider) (Connection B) Broadband wired connection connecting to ISP B (Cable internet provider) Both has access to the internet. When I try connecting to a website and checking the networking tab on my Task Manager, I only see the network traffic being routed to only Connection A. Is there a way to make the computer to utilize both network (in a sense using all the bandwidth available from both the Cable ISP and the 3G / EVDO ISP) at the same time? If so, what do I need to do to set this up ... on Windows 7? Here is a bit more info on my network connections (ipconfig /all): PPP adapter Wireless Terminal: IPv4: aa.bb.ccc.ddd(preferred) Subnet mask: 255.255.255.255 Default Gateway: 0.0.0.0 DNS: aa.ee.f.ggg aa.ee.f.hhh Primary Wins: jjj.ii.k.l Secondary Wins: jjj.ii.k.m Ethernet adapter LAN: IPv4: 192.168.1.100 (connected to a router by wired that itself connect to a cable modem) subnet mask: 255.255.255.0 Default gateway: 192.168.1.1 (the wireless router) DHCP: 192.168.1.1 (the wireless router) DNS: xxx.yy.zz.ww rr.sss.t.uuu For my own privacy, I don't believe the actual number matters, the patterns are representative of the ip numbering scheme...

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