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  • File Transfer with a double SSH login.

    - by Harpal
    I'm have trouble transfering files again from my work PC, which is a linux machine to my home windows PC. My work has changed it so I now need to SSH twice before I can access my PC. So I need to: ssh [email protected] password: xxxxx I then need to do it again. ssh computer_name password: xxxxx I've tried accessing directly via my computers IP but to of no avail. Is there a way I can use pscp or file zilla to ssh twice so I can transfer files?

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  • Ubuntu: Multiple NICs, one used only for Wake-On-LAN

    - by jcwx86
    This is similar to some other questions, but I have a specific need which is not covered in the other questions. I have an Ubuntu server (11.10) with two NICs. One is built into the motherboard and the other is a PCI express card. I want to have my server connected to the internet via my NAT router and also have it able to wake from suspend using a Magic Packet (henceforth referred to as Wake-On-LAN, WOL). I can't do this with just one of the NICs because each has an issue - the built-in NIC will crash the system if it is placed under heavy load (typically downloading data), whilst the PCI express NIC will crash the system if it is used for WOL. I have spent some time investigating these individual problems, to no avail. My plan is thus: use the built-in NIC solely for WOL, and use the PCI express card for all other network communication except WOL. Since I send the WOL Magic Packet to a specific MAC address, there is no danger of hitting the wrong NIC, but there is a danger of using the built-in NIC for general network access, overloading it and crashing the system. Both NICs are wired to the same LAN with address space 192.168.0.0/24. The built-in ethernet card is set to have interface name eth1 and the PCI express card is eth0 in Ubuntu's udev persistent rules (so they stay the same upon reboot). I have been trying to set this up with the /etc/network/interfaces file. Here is where I am currently: auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 192.168.0.3 netmask 255.255.255.0 network 192.168.0.0 broadcast 192.168.0.255 gateway 192.168.0.1 auto eth1 iface eth1 inet static address 192.168.0.254 netmask 255.255.255.0 I think by not specifying a gateway for eth1, I prevent it being used for outgoing requests. I don't mind if it can be reached on 192.168.0.254 on the LAN, i.e. via SSH -- it's IP is irrelevant to WOL, which is based on MAC addresses -- I just don't want it to be used to access internet resources. My kernel routing table (from route -n) is Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 192.168.0.1 0.0.0.0 UG 100 0 0 eth0 169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 eth0 192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1 My question is this: Is this sufficient for what I want to achieve? My research has thrown up the idea of using static routing to specify that eth1 should only be used for WOL on the local network, but I'm not sure this is necessary. I have been monitoring the activity of the interfaces using iptraf and it seems like eth0 takes the vast majority of the packets, though I am not sure that this will be consistent based on my configuration. Given that if I mess up the configuration, my system will likely crash, it is important to me to have this set up correctly!

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  • Way to connect to VPS w/Win Vista Home Basic, other than VNC or TeamViewer?

    - by Tia Peterson
    I need to connect to a VPS and I'm running Vista Home Basic. TightVNC and TeamViewer both require access to the VPS first, because they require that the server be set up with TightVNC or TeamViewer. Is there anything similar to Remote Desktop that will allow me to use the IP address and administrator password to the VPS to simply connect, rather than having to have the hosting company set up VNC or TeamViewer on the server first? Any help would be appreciated!!! Thank you!

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  • Securing DRAC/ILO

    - by The Diamond Z
    This might be a dumb question but DRAC/ILO both have HTTP server interfaces. If I were trolling IP's port 80 on and I came across such a page I'd know it to be a high value target in the sense that if I can crack it, I can take control of the server to some extent (potentially installing another OS). Other than changing the port, what are the best practices for securing DRAC/ILO on public Internet facing machines?

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  • Multi-site email relay based on email address (in AD?)

    - by MarkRobinson
    We have a multi site setup currently based around Exchange 2003, but we are getting a lot of traffic over the vpn as only one server has an internet facing IP. Is there such a product that could sit on a hosted rack somewhere that would look at an incoming email and from information in AD determine which mail server to relay the message to?

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  • Sharing a modem INTERNET on LAN

    - by Shadyabhi
    My computer is already connected to a 100Mbps LAN. I can use wvdial to connect to internet using a modem when I have my LAN disconnected. Now, I want to share this modem internet to one of the ip address available on LAN say 10.100.99.56.. First of all, can it be done? How do I go about doing that?

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  • How passively monitor for tcp packet loss? (Linux)

    - by nonot1
    How can I passively monitor the packet loss on TCP connections to/from my machine? Basically, I'd like a tool that sits in the background and watches TCP ack/nak/re-transmits to generate a report on which peer IP addresses "seem" to be experiencing heavy loss. Most questions like this that I find of SF suggest using tools like iperf. But, I need to monitor connections to/from a real application on my machine. Is this data just sitting there in the Linux TCP stack?

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  • Laptop kicks other users off the wifi when it connects, then gets disconnected itself

    - by Devon
    I've got an Acer Aspire One running Linux. When I connect to my building's wifi, everything seems fine for a short period of time (I can google a few things or start downloading an Apt package), but then other devices on the network lose their IP addresses. Shortly after that, my computer also gets disconected. My computer is set to use DHCP. What causes this, and do you know how it could be fixed? Am I causing a broadcast storm?

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  • mysql-proxy got error which cause it to crash

    - by nonus25
    I got that message and i dont know what it is means: Oct 21 12:24:26 lex mysql-proxy: 2013-10-21 12:24:26: ((error)) last message repeated 98 times Oct 21 12:24:26 lex mysql-proxy: 2013-10-21 12:24:26: ((error)) network-mysqld-packet.c.596: COM_(0x04) should not be (OK|ERR|NULL), got: 00 Oct 21 12:24:26 lex kernel: [4163416.207121] mysql-proxy[14271] trap int3 ip:7ff96e8a4313 sp:7fffb9086ad0 error:0 Any idea what can be the cause of it ?

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  • How to configure 2 LAN Cards

    - by PatDiazJr
    How do we configure two (2) LAN cards on one computer. One LAN card is connected to the internet via the DSL through a router, configured as DHCP. The other LAN card is to be connected via our office's IP/VPN (for email and other office online processes). I know it could be done, but I do not know how. By the way, the operating system is Windows XP.

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  • DELL DRAC & Ubuntu VPN Connection

    - by Mikunos
    I am trying to connect to a DELL DRAC card without success by Ubuntu VPN Connection Manager. I have these data: Protocol: PPTP SERVER IP PPTP: 1233.123.123.123 DRAC IP: 192.168.10.25 Subnet: 255.255.0.0 User: myuser Pass: mypass where have I to write these parameters? I have configured the PPTP connection using the graphical tool in Ubuntu 11.10 ... but in the /var/log/syslog I get these messages: Apr 15 11:33:15 shinet NetworkManager[1035]: <info> Starting VPN service 'pptp'... Apr 15 11:33:15 shinet NetworkManager[1035]: <info> VPN service 'pptp' started (org.freedesktop.NetworkManager.pptp), PID 18180 Apr 15 11:33:15 shinet NetworkManager[1035]: <info> VPN service 'pptp' appeared; activating connections Apr 15 11:33:15 shinet NetworkManager[1035]: <info> VPN plugin state changed: 3 Apr 15 11:33:15 shinet NetworkManager[1035]: <info> VPN connection 'Connessione VPN 1' (Connect) reply received. Apr 15 11:33:15 shinet pppd[18182]: Plugin /usr/lib/pppd/2.4.5/nm-pptp-pppd-plugin.so loaded. Apr 15 11:33:15 shinet pppd[18182]: pppd 2.4.5 started by root, uid 0 Apr 15 11:33:15 shinet pppd[18182]: Using interface ppp0 Apr 15 11:33:15 shinet pppd[18182]: Connect: ppp0 <--> /dev/pts/1 Apr 15 11:33:15 shinet NetworkManager[1035]: SCPlugin-Ifupdown: devices added (path: /sys/devices/virtual/net/ppp0, iface: ppp0) Apr 15 11:33:15 shinet NetworkManager[1035]: SCPlugin-Ifupdown: device added (path: /sys/devices/virtual/net/ppp0, iface: ppp0): no ifupdown configuration found. Apr 15 11:33:15 shinet pptp[18185]: nm-pptp-service-18180 log[main:pptp.c:314]: The synchronous pptp option is NOT activated Apr 15 11:33:46 shinet pppd[18182]: LCP: timeout sending Config-Requests Apr 15 11:33:46 shinet pppd[18182]: Connection terminated. Apr 15 11:33:46 shinet avahi-daemon[1081]: Withdrawing workstation service for ppp0. Apr 15 11:33:46 shinet NetworkManager[1035]: SCPlugin-Ifupdown: devices removed (path: /sys/devices/virtual/net/ppp0, iface: ppp0) Apr 15 11:33:46 shinet NetworkManager[1035]: <warn> VPN plugin failed: 1 Apr 15 11:33:46 shinet pppd[18182]: Modem hangup Apr 15 11:33:46 shinet NetworkManager[1035]: <warn> VPN plugin failed: 1 Apr 15 11:33:51 shinet pppd[18182]: Exit. Apr 15 11:33:51 shinet NetworkManager[1035]: <warn> VPN plugin failed: 1 Apr 15 11:33:51 shinet NetworkManager[1035]: <info> VPN plugin state changed: 6 Apr 15 11:33:51 shinet NetworkManager[1035]: <info> VPN plugin state change reason: 0 Apr 15 11:33:51 shinet NetworkManager[1035]: <warn> error disconnecting VPN: Could not process the request because no VPN connection was active. Apr 15 11:33:51 shinet NetworkManager[1035]: <info> Policy set 'Wired connection 1' (eth0) as default for IPv4 routing and DNS. Apr 15 11:33:57 shinet NetworkManager[1035]: <info> VPN service 'pptp' disappeared Thanks

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  • I'm having problems restarting httpd server due to segfault in libapr

    - by Paul
    My httpd server has stopped working, within /var/log/messages I got the following error: May 10 08:08:30 linuxbox kernel: httpd[25353]: segfault at b7fb7991 ip 009ca63b sp bfec3d50 error 7 in libapr-0.so.0.9.12[9af000+1f000] Can anyone shed light on how to fix this, i've tried ghosting the drive, then removed apr and re-installed, but the error keeps coming up.

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  • Port Forwarding

    - by Ahmet Altun
    Assuming port forwarding is done on router, can the router forward if the data is coming from local machine, rather than remote. For example: Sender targets ip like:88.251.xxx.xxx, port 8999. Receiver listens to that port. Router, forwards 8999 to receiver. They are all on local network. Should it run well?

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  • Problems pointing site to site in Hosts file

    - by coffeeaddict
    I'm on my localhost PC. I need to add an entry that maps our public site to our dev server. I tried several things with no luck: 192.168.1.40 oursite.com // where the IP here is our internal dev server or devserver oursite.com oursite.com devserver I'm not sure what I'm doing wrong here.

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  • Sharing Internet Connection

    - by user36852
    Hi :) I have a Cable Internet (Assigned IP etc) to connect to internet and I want to connect another computer to same line of cable as well. Both in Same room. Any suggestion, affordable solution please?

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  • I can't view my website in internet explorer browser after move from apache to nginx, while it work

    - by sauravdon
    After installation of nginx webserver, i run my website in firefox. It works good in firefox, i can see my website template is looks good, but in internet explorer it is not working properly, i can't see my webpage has text and images and every content in bad style. Like images are not loading, may be css is not working. Please help me to sort out this problem. Before this i was running my website on apache with different ip address and moved to nginx. Tanks saurav

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  • DJBDNS DNSCache configuration, svscan won't start

    - by SecurityGate
    I've been wracking my brain the last few days trying to setup DJBDNS on my server. I haven't been having too much luck. I have been following the guide provided by the creator of DJBDNS: http://cr.yp.to/djbdns/run-server.html Here is a run-through of where I am: Both services are up: [root@Happycat tinydns]$ svstat /service/tinydns/ /service/tinydns/: up (pid 18224) 74454 seconds [root@Happycat tinydns]$ svstat /service/dnscache/ /service/dnscache/: up (pid 2733) 2184 seconds My /etc/resolv.conf file: nameserver 127.0.0.1 My $PATH: [root@Happycat ~]$ echo $PATH /usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/sbin:/usr/sbin:/var/qmail/bin/:/usr/nexkit/bin:/root/bin My tinydns/root/data records: ..:69.160.56.65:a:259200 .ns1.benwilk.com:69.160.56.65:a:259200 .ns2.benwilk.com:69.160.56.65:a:259200 .56.160.69.in-addr.arpa:69.160.56.65:a:259200 .56.160.69.in-addr.arpa:69.160.56.65:b:259200 =benwilk.com:69.160.56.65:86400 =openbarrel.net:69.160.56.65:86400 +www.openbarrel.net:69.160.56.65:86400 +www.benwilk.com:69.160.56.65:86400 Tiny dns can recognize the records set: [root@Happycat root]$ tinydns-get a benwilk.com 1 benwilk.com: 78 bytes, 1+1+1+1 records, response, authoritative, noerror query: 1 benwilk.com answer: benwilk.com 86400 A 69.160.56.65 authority: . 259200 NS a.ns additional: a.ns 259200 A 69.160.56.65 But then it comes to a grinding halt: svscan /service/tinydns/ supervise: fatal: unable to start env/run: file does not exist supervise: fatal: unable to acquire log/supervise/lock: temporary failure supervise: fatal: unable to start supervise/run: file does not exist supervise: fatal: unable to start root/run: file does not exist supervise: fatal: unable to start env/run: file does not exist supervise: fatal: unable to start supervise/run: file does not exist supervise: fatal: unable to start root/run: file does not exist supervise: fatal: unable to start env/run: file does not exist supervise: fatal: unable to start supervise/run: file does not exist supervise: fatal: unable to start root/run: file does not exist supervise: fatal: unable to start env/run: file does not exist supervise: fatal: unable to start supervise/run: file does not exist supervise: fatal: unable to start root/run: file does not exist supervise: fatal: unable to start env/run: file does not exist supervise: fatal: unable to start supervise/run: file does not exist supervise: fatal: unable to start root/run: file does not exist supervise: fatal: unable to acquire log/supervise/lock: temporary failure supervise: fatal: unable to start env/run: file does not exist supervise: fatal: unable to start supervise/run: file does not exist supervise: fatal: unable to start root/run: file does not exist I'm assuming I have to set something with DNScache, and to be honest, it gets a bit confusing. I'm not sure whether to set it's IP address to 127.0.0.1 or one of the other IP addresses on the system. What am I missing from here?

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  • What does this TCP Packet mean ?

    - by asksuperuser
    I'm total newbie at tcp/ip and I was experimenting with Wireshark. What this mean: 1824 578.194204 xxx.xxx.xxx.xxx yyy.yyy.yyy.yyy UDP Source port: 17500 Destination port: 17500 In data I can see that my user pc name is sent (happily it's a generic name): does this mean someone is trying to hack my pc ?

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  • Netcat file transfer problem

    - by thepurplepixel
    I have two custom scripts I just wrote to facilitate transferring files between my VPS and my home server. They are both written in bash (short & sweet): To send: #!/bin/bash SENDFILE=$1 PORT=$2 HOST='<my house>' HOSTIP=`host $HOST | grep "has address" | cut --delimiter=" " -f 4` echo Transferring file \"$SENDFILE\" to $HOST \($HOSTIP\). tar -c "$SENDFILE" | pv -c -N tar -i 0.5 | lzma -z -c -6 | pv -c -N lzma -i 0.5 | nc -q 1 $HOSTIP $PORT echo Done. To receive: #!/bin/bash SERVER='<myserver>' SERVERIP=`host $SERVER | grep "has address" | cut --delimiter=" " -f 4` PORT=$1 echo Receiving file from $SERVER \($SERVERIP\) on port $PORT. nc -l $PORT | pv -c -N netcat -i 0.5 | lzma -d -c | pv -c -N lzma -i 0.5 | tar -xf - echo Done. The problem is that, for a very quick second, I see something flash along the lines of "Connection Refused" (before pv overwrites it), and no file is ever transferred. The port is forwarded through my router, and nmap confirms it: ~$ sudo nmap -sU -PN -p55515 -v <my house> Starting Nmap 5.00 ( http://nmap.org ) at 2010-04-21 18:10 EDT NSE: Loaded 0 scripts for scanning. Initiating Parallel DNS resolution of 1 host. at 18:10 Completed Parallel DNS resolution of 1 host. at 18:10, 0.00s elapsed Initiating UDP Scan at 18:10 Scanning 74.13.25.94 [1 port] Completed UDP Scan at 18:10, 2.02s elapsed (1 total ports) Host 74.13.25.94 is up. Interesting ports on 74.13.25.94: PORT STATE SERVICE 55515/udp open|filtered unknown Read data files from: /usr/share/nmap Nmap done: 1 IP address (1 host up) scanned in 2.08 seconds Raw packets sent: 2 (56B) | Rcvd: 5 (260B) Also, running netcat normally doesn't work either: squircle@summit:~$ netcat <my house> 55515 <my house> [<my IP>] 55515 (?) : Connection refused Both boxes are Ubuntu Karmic (9.10). The receiver has no firewall, and outbound traffic on that port is allowed on the sender. I have no idea what to troubleshoot next. Any ideas? P.S.: Feel free to move this to SO/SF if you feel it would fit better there.

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  • How to start nginx via different port(other than 80)

    - by Zhao Peng
    Hi I am a newbie on nginx, I tried to set it up on my server(running Ubuntu 4), which already has apache running. So after I apt-get install it, I tried to start nginx. Then I get the message like this: Starting nginx: the configuration file /etc/nginx/nginx.conf syntax is ok configuration file /etc/nginx/nginx.conf test is successful [emerg]: bind() to 0.0.0.0:80 failed (98: Address already in use) [emerg]: bind() to 0.0.0.0:80 failed (98: Address already in use) [emerg]: bind() to 0.0.0.0:80 failed (98: Address already in use) [emerg]: bind() to 0.0.0.0:80 failed (98: Address already in use) [emerg]: bind() to 0.0.0.0:80 failed (98: Address already in use) That makes sense as Apache is using port 80. Then I tried to modify nginx.conf, I reference some articles, so I changed it like so: server { listen 8080; location / { proxy_pass http://94.143.9.34:9500; proxy_set_header Host $host:8080; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Via "nginx"; } After saving this and try to start nginx again, I still get the same error as previously. I cannot really find a related post about this, could any good people shred some light? Thanks in advance :) ========================================================================= I should post all the content in conf here: user www-data; worker_processes 1; error_log /var/log/nginx/error.log; pid /var/run/nginx.pid; events { worker_connections 1024; # multi_accept on; } http { include /etc/nginx/mime.types; access_log /var/log/nginx/access.log; sendfile on; #tcp_nopush on; #keepalive_timeout 0; keepalive_timeout 65; tcp_nodelay on; gzip on; gzip_disable "MSIE [1-6]\.(?!.*SV1)"; include /etc/nginx/conf.d/*.conf; include /etc/nginx/sites-enabled/*; server { listen 81; location / { proxy_pass http://94.143.9.34:9500; proxy_set_header Host $host:81; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Via "nginx"; } } } mail { See sample authentication script at: http://wiki.nginx.org/NginxImapAuthenticateWithApachePhpScript auth_http localhost/auth.php; pop3_capabilities "TOP" "USER"; imap_capabilities "IMAP4rev1" "UIDPLUS"; server { listen localhost:110; protocol pop3; proxy on; } server { listen localhost:143; protocol imap; proxy on; } } Basically, I changed nothing except adding the server part.

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  • Which free VNC server works well with Windows 7 and how to advertise it via Samba for control by a M

    - by GJ
    Hi I need to control a Windows 7 PC via VNC from a Mac in an office LAN. Since the IPs are dynamically assigned, I'd like the PC to appear in my "Places" and in the automatically detected nearby servers in VNC client I'm using -- both of which require the PC to advertise its VNC server via Samba (right?). I tried installing ultravnc, which works when I access it directly by IP, but it doesn't seem to advertise itself in the network. Any ideas?

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  • how to connect to server continuously using an bad internet connetion

    - by Nikhil
    I have a bad Internet connection, it disconnects frequently and on reconnect, I'm assigned a different IP address by the ISP. The problem is that I connect to a remote VPS (Ubuntu), and when Internet connection is disrupted n reconnected, I can no longer do anything on the terminal. I have to restart the terminal and re-initiate the connection. Is there a way I can have persistent connection with server.

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