Search Results

Search found 10810 results on 433 pages for 'port forwarding'.

Page 160/433 | < Previous Page | 156 157 158 159 160 161 162 163 164 165 166 167  | Next Page >

• What's the best way to block IP spoofing on a layer 3 switch?

  - by toupeira

  We're hosting Dedicated Servers and are currently using old 3com switches with IP-based ACLs. So each port has an ACL that allows all IP addresses assigned to this customer, and blocks everything else. But now 3com was bought by HP, and the follow-up model only supports basic ACL that aren't flexible enough to both allow certain IPs while blocking others. Looking at other switches in a similar price-range, we've found that most of them have similar problems or don't offer any ACL features at all. I assume this could also somehow be done with VLANs, but if I understand this correctly we'd still need some kind of ACL to actually specify the valid IP addresses for each port. What do you use to make sure your customers don't use unassigned IP addresses? Or what switches can you recommend that have flexible ACL functionality?

  Read the article

• What's a good tool for checking from my own machine that my server is up?

  - by chico

  I'm looking for a good tool (web site or not) that I can use to do a simple check whether my web server is accessible from outside LAN (it's serving in a non-standard port). To give some context, I've gone through this problem: can't access my ip from outside. Even the tools I've found are not really working. Currently to fetch the html I serve with the online bash tool I do: curl <my ip>:<my port> \ | sed 's/&/\&amp;/g; s/</\&lt;/g; s/>/\&gt;/g; s/"/\&quot;/g; s/'"'"'/\&#39;/g' I'm looking for a simple tool that can display the html properly, or just show raw text without resorting to sed html escaping and curl.

  Read the article

• Ganglia multicast with clustering

  - by luckytaxi

  Let's say I have two hosts. One acts as the server where gmetad and a local gmond resides. It also has the web interface. I then have a client that only has gmond configure as follows. Anyways, everything works fine if i remove the mcast_join line from the udp_recv_channel If I leave it as is the UI doesn't show any hosts. I'm following the quick start guide found here In my gmond.conf file i have the following. udp_send_channel { mcast_join = host1 port = 8661 ttl = 1 } udp_recv_channel { port = 8661 retry_bind = true mcast_join = host1 bind = host1 } In my gmetad.conf file i have. data_source "Infrastructure" host1:8661 host2:8661

  Read the article

• Remote access to a KVM Ubuntu virtual server

  - by Lee

  I've just setup an ubuntu virtual server and everything seems to be working fine. I used KVM to get it working with a bridged network. I've given the virtual server a static ip address on my network. I don't seem to be able to connect to the virtual machine though from outside my network. If I'm on my own network it all works fine, I can ping the ip and connect to it. The virtual server can ping other machines and sites on the internet. I changed the port forwarding rules on my router to forward any connections on a specific port to the virtual server ip address thinking that was the problem, but it was still the same. Is there something I'm missing here which is blocking outside connections to the virtual machine? Thanks.

  Read the article

• iPad USB Charging Utility for Dell Optiplex

  - by BreakPhreak

  As you probably know already, an iPad requires a certain power on USB port to be charged from. Thus, some motherboard manufacturers (such as ASUS, Gigabyte etc) had released a special driver that recognizes that an iPad is connected to the port and adjust the USB power accordingly. On one of my computers (Gigabyte motherboard) it works fine. But other one is Dell Optiplex 780 and the regular googling by "<motherboard type> + iPad charging" doesn't seem to bring encouraging results. Just for completeness: no, the iPad is not being charged without any special driver installed (out of the box) either. Any suggestions will be welcomed.

  Read the article

• HD Radeon 6950 cannot run multiple monitors

  - by Bryan S.

  I'm having troubles getting multiple monitors to run on my graphics card. I plug one via the hdmi, and one into the DVI (I have tried both available DVI ports). with one DVI port it does not even register the monitor, with the second one I go into the Catalyst Control Center and it gives me the option to swap between the HDMI and the DVI port. I guess since this is the flex edition I could just go get 2 DSP to HDMI converters, plug 2 monitors in through the available DSP, and than the 3rd one into the HDMI, but do you have any idea why it will not let me run one HDMI and one DVI?

  Read the article

• Amazon EC2 firewall rules & VPN connections

  - by John

  I'm moving from Rackspace to Amazon EC2. One thing I like about our Rackspace setup is that it is extremely secure. The MySQL box can only be accessed via internal IPs, and we have a Cisco VPN firewall that allows us to dial in remotely and access port 3306 as though we were on the internal network. I'd like to figure out how to replicate this setup with EC2. How can I make the MySQL box so that port 3306 can only be accessed on the internal network? What about the VPN piece of things? I know Amazon has the VPC service, but it seems like that's for the purpose of connecting to an existing network. I don't have an existing network. I want to essentially create one inside Amazon and connect to that. What are my options? Any good tutorials on how to get started? Thanks in advance for your help

  Read the article

• check_ssh executed from Nagios server returns "Server answer: ", nothing else

  - by phs

  Commmand works on the host I need to monitor (its IP is denoted as $HOSTADDRESS$ here): [root@host ~]# /usr/local/nagios/libexec/check_ssh localhost SSH OK - OpenSSH_4.3 (protocol 2.0) However, on the Nagios server, it does not: root@server:~# /usr/lib/nagios/plugins/check_ssh -H $HOSTADDRESS$ Server answer: I can see that the port is open: root@server:~# /usr/lib/nagios/plugins/check_tcp -H $HOSTADDRESS$ -p 22 TCP OK - 0.123 second response time on port 22|time=0.123277s;;;0.000000;10.000000 And I can verify with telnet: root@server:/etc/nagios3/conf.d# telnet $HOSTADDRESS$ 22 Trying $HOSTADDRESS$... Connected to $HOSTADDRESS$. Escape character is '^]'. After searching the web for two hours and trying different suggestions I am out of ideas. I have several other hosts with similar setup, and they don't have this problem. I have compared the configs and they look the same (I think). I am clearly missing something here.

  Read the article

• How to configure fetchmail to send messages from remote smtp server to Gmail?

  - by ifesdjeen

  Hi, I've been trying to setup email forwarding through fetchmail from remote smtp server to Gmail account, although messages are constantly coming to my local address and accessible via "mail" command. SMTP connection works perfectly, but emails do not go anywhere. System: debian, fetchmail Config: poll smtp.server protocol imap username “user” password “pass” smtpname “[email protected]” ssl Thank you!

  Read the article

• How to convert non key, value java arguments to applet params? (args like -Xmx64m)

  - by bwizzy

  I'm trying to use xvpviewer (based on TightVNC) to VNC into my VMs running on Citirx XenServer. There are a couple of caveats required with trusting the certificate from XenServer which I've got working. Essentially I'm trying to convert the java command below (which works on the command line to launch VncViewer) for use in an applet that can be accessed via HTML page. java -Djavax.net.ssl.trustStore=/tmp/kimo.jks -Xmx64m -jar VncViewer.jar HOST "/console?ref=OpaqueRef:141f4204-2240-4627-69c6-a0c7d9898e6a&session_id=OpaqueRef:91a483c4-bc40-3bb0-121c-93f2f89acc3c" PORT 443 PROXYHOST1 192.168.0.5 PROXYPORT1 443 SocketFactory "HTTPSConnectSocketFactory" I know I can put the HOST, PORT etc arguments into param tags for the applet but I'm not sure how to apply the two initial argments.

  Read the article

• Colocation and HSRP setup

  - by WinkyWolly

  My colocation provider has setup HSRP for us and has provided us 2 drops (plugged into 1/1/1 and 1/1/2) from their routers as well as a /29 with 2 HSRP IP's and the rest of the /29 usable for the switch. I know that HSRP should be pretty much plug and play as long as the ports are in the same VLAN. However I'm confused as to how to the IP setup should work. Currently I've assigned port 1/1/1 the full /29 however I think this is incorrect because if I were to unplug it port 1/1/2 wouldn't work as it has no IP assignment. What's the proper way to do this?

  Read the article

• Multiple subnets behind SonicWall TZ 180

  - by Derek

  We have a SonicWall TZ180 that acts as a VPN endpoint. Right now it has one WAN IP address and a /24 assigned to the LAN interface. Our mail cluster administrator asked if it was possible to add a second private class C behind the VPN. This second subnet would be available to the other network and then we would use address objects and acls to limit access. Is this possible? I read up on PortShield but I don't know if that's what we would need to use because we're pushing all data out of one physical port into a Cisco switch that has VLANs already set up. Addendum: It appears that PortShields will do what I want with only one limitation; it requires a direct 1-1 relationship of portshield to physical port. This would then limit us to 4 PortShields on 1 TZ180. Is there a better solution than this?

  Read the article

• HDD not detected whenever first power on (detected at BIOS level)

  - by Alvin Lim

  I am using Asus P8H61-M LX Motherboard with latest version of BIOS: 4401 One SATA-3 Western Digital Black Series 1.5TB is attached to SATA port 0 A Samsung 22x DVDRW SATA drive attached to SATA Port 1. ps/2 Logitech mouse and keyboard. CPU is i3 with DDR3 8Gb RAM. no other devices are installed. My problem is that when I turn on the computer, the WD HDD is not detected. ie cannot be booted. I have to press ctrl+alt+del in order to get it detected. I'd used the WD data lifeguard software to scan the HDD, the smart status is OK, the surface scan does not show any error at all. Where did I do wrong? Any advice is greatly appreciated.

  Read the article

• Does a single LACP channel over multiple switches increase redundancy?

  - by Sirch

  I am curious for opinions, findings, or evidence that having multiple interfaces bonded using LACP to ports in multiple switches can increase redundancy. Previously bonded interfaces have always been to a single switch, with a redundant channel to another port. Without getting into vendor specifics, my thought is that as this is a single LACP, the likelihood that an event or change could lead to a wide service outage. Without having the spare equipment or time to test this single channel over diverse switches, could anyone with a greater networking knowledge than myself, tell me if there a network side event that would bring down the network connectivity to a server that had created a bonded interface to two ports on separate switches? Does the use of bonded ethernet channels across multiple switches (that we are advised that we can use) from the server, provide both improved throughput (unquestionably), and improved redundancy (uncertain). Could/would network events such as switch failure, port migration, patching, recovery, etc, cause the channel for both server network interfaces to be unavailable? Thanks in advance.

  Read the article

• Secure copy uucp style

  - by Alexander Janssen

  I often have the case that I have to make a lot of hops to the remote host, just because there is no direct routing between my client and the remote host. When I need to copy files from a remote host two or more hops away, I always have to: client$ ssh host1 host1$ ssh host2 host2$ scp host3:/myfile . host2$ exit host1$ scp host2:myfile . host1$ exit client$ scp host1:myfile . Back when uucp still was being used this would be as simple as a uucp host1!host2!host3 /myfile . I know that there's uucp over ssh, but unfortunately I don't have the proper privileges on those machines to set it up. Also, I'm not sure if I really want to fiddle around with customer's machines. Does anyone know of a method doing this tasks without the need to setup a lot of tunnels or deploying new software to remote hosts? Maybe some kind of recursive script which clones itself to all the remote hosts, doing the hard work for me? Assume that authentication takes place with public keys and that all hosts do SSH Agent Forwarding. Edit: I'm not looking for a way to automatically forwarding my interactive sesssion to the nexthop host. I want a solution to copy files bangpath-style using scp via multiple hops without the need to install uucp on any of those machines. I don't have the (legal) rights or the privileges to make permanent changes to the ssh-config. Also, I'm sharing this username and hosts with a lot of other people. I'm willing to hack up my own script, but I wanted to know if anyone knows something which already does it. Minimum-invasive changes to hosts on the bangpath, simple invocation from the client. Edit 2: To give you an impression of how it's properly been done in interactive sessions, have a look at the GXPC clustershell. This is basically a Python-script, which spwans itself over to all remote hosts which have connectivity and where your ssh-key is installed. The great thing about it is, that you can tell "I can reach HostC via HostB via HostA." It just works. I want to have this for scp.

  Read the article

• Having internet on a VirtualBox

  - by S4M

  I am running a linux laptop and I set up a VirtualBox under windows XP. My only problem is the VirtualBox doesn't seem to be connected to internet - When I do the connection diagnosis it tells me there is no connection. I am using an NAT adapter, and I bind the port 80 from my computer to the port 80 of the VirtualBox, and same for the ports 8080, but still no result. I would be grateful is someone could help me to sort this out. EDIT: thinking of it, what is making the problem hard - and painful - is the absence of error message. If I try to use a given adapter to share my computer's connection with the VirtualBox, and it doesn't work, I have no way to know why. So, it would be really helpful if someone could share a way to access this king of information (is there a log file somewhere or a way to run VirtualBox from command line in a verbose mode?).

  Read the article

• How to host ASP.NET application externally?

  - by Josh

  I have an ASP.NET application that I can get to locally by going to 192.168.1.102:81/TestApp. I would like to host the application externally by going to domain.com:81/TestApp (I already have my domain pointing to my router and this works fine - I have apache running on port 80 on another server). I modified the router settings to point any request coming through port 81 to 192.168.1.102. I am still having trouble accessing the ASP.NET site (I get the error message that "This link appears to be broken"). Am I missing something? How can I redirect domain.com:81/TestApp to my ASP.NET application? Thanks.

  Read the article

• ssh into my mac from my ipod

  - by mechko

  Ok so this is what I got, but it don't look right... The set up is as follows: My Mac is on a wireless network, presumably behind a firewall over which I have no admin privileges. Further, said wireless network changes my internal IP randomly at random times, so I do not know what my ip is. Note that localhost is a variable ip I forward some port or the other to my dns: ssh -R 19999:localhost:22 sourceuser@remotehost connect to my remotehost from my machine: ssh sourceuser@remotehost and then connect to the port I forwarded: ssh localhost -p 19999 [solved] Second question, there are a bunch of ssh clients for the iphone. Which one should I use? EDIT: Since jailbreak is not illegal, simply frowned upon by the Corporation, I've decided to go with that. I have a nice shell with openssh and the works. Best of all, it's free and it does exactly what you expect.

  Read the article

• How to set up Drupal Plugin Manager on MAMP in a secure way?

  - by Andrei

  Hi, I use MAMP PRO as global webserver. First of all, is it a good idea? Secondly, my objective is to run a Drupal website with as easy management as possible. Now I want to use Plugin Manager module to install additional modules and themes for my website. It wants to use ftp for that, and I know that if I open access to FTP port then IT-department guys will come to me and ask to shut it down. So I wonder if there is a way to allow Plugin Manager to install modules, having the port 21 closed somehow?

  Read the article

• Do I need a Gigabit router with a 24MB/s down and 7MB/s upload speed cable modem?

  - by djangofan

  Do I need a Gigabit port capable wireless router with a 24MB/s down and 7MB/s upload speed cable modem? Does anyone know how to calculate this? FYI, I wont be using the wireless connection from my main computer system. My computer will connect via a hard wire into the router (of the wireless variety), which in turn is connected to the cable modem. My research suggests that the 100 MB/s port can easily handle it. Is that true?

  Read the article

• No remote access to PostgreSQL db

  - by gattol

  i'm stuck in connecting to a PostresSQL database from remote host. The server is accepting incoming connections on port 5432 and i've configured pg_hba.conf like this: local all all md5 host all all 0.0.0.0/0 md5 and the postgresql.conf like this: listen_addresses = '*' port = 5432 max_connections = 100 I don't have any problem accessing from local but when i try to connect via psql with something like this: psql -U myuser -h hostname db_name I get this error: psql: FATAL: no pg_hba.conf entry for host "87.zz.yy.xxx", user "myuser", database "db_name", SSL off I also tried to put the host 87.zz.yy.xxx in the pg_hba.conf file without success.

  Read the article

• How to use postfix header_checks with zarafa outgoing mail

  - by olvrlrnz

  I'm using zarafa as MDA with postfix. For privacy reasons I want to filter client internal IP-addresses and stuff like this. To do so I've added the following to master.cf: submission inet n - - - - smtpd [...] -o cleanup_service_name=subcleanup [...] and further down the file: subcleanup unix n - - - 0 cleanup -o header_checks=pcre:/etc/postfix/smtp_header_checks which works perfectly for clients delivering their mail through the submission port. But my zarafa is of course not using the submission port to send mail, hence it doesn't hit the subcleanup routine and outgoing mails contain a very nice X-Mailer: Zarafa-exact_version header which is rather unsatisfying. Is there any way to make zarafa use the subcleanup routine? Any help is much appreciated.

  Read the article

• forward ssh and ftp with a reverse proxy (squid)

  - by Arcath

  I already have a reverse proxy setup for HTTP, and im now looking to add ssh and ftp to it. i assume i can just copy the rules from the http list? how do i go about forwarding the requests? id like to have ftp on port 1235 and ssh on 1236

  Read the article

• Logging the client IP with Nginx/Varnish/Apache

  - by jetboy

  I have Nginx listening on port 443 as an SSL terminator, and proxying unencrypted traffic to Varnish on the same server. Varnish 3 is handling this traffic, and traffic coming in directly on port 80. All traffic is passed, unencrypted, to Apache instances on other servers in the cluster. The Apache instances use mod_rpaf to replace the logged client IP with the contents of the X-Forwarded-For header. My problem is that if the traffic is coming via Nginx, while the 'correct' client IP is getting logged in the VarnishNCSA logs, it looks as if Varnish is (understandably) replacing Nginx's X-Forwarded-For header with 127.0.0.1 downstream, and this is getting logged with Apache. Is there a nice simple way to stop Varnish rewriting X-Forwarded-For if it's already populated?

  Read the article

• ntpdate works, but ntpd can't synchronize

  - by dafydd

  This is in RHEL 5.5. First, ntpdate to the remote host works: $ ntpdate XXX.YYY.4.21 24 Oct 16:01:17 ntpdate[5276]: adjust time server XXX.YYY.4.21 offset 0.027291 sec Second, here are the server lines in my /etc/ntp.conf. All restrict lines have been commented out for troubleshooting. server 127.127.1.0 server XXX.YYY.4.21 I execute service ntpd start and check with ntpq: $ ntpq ntpq> peer remote refid st t when poll reach delay offset jitter ============================================================================== *LOCAL(0) .LOCL. 5 l 36 64 377 0.000 0.000 0.001 timeserver.doma .LOCL. 1 u 39 128 377 0.489 51.261 58.975 ntpq> opeer remote local st t when poll reach delay offset disp ============================================================================== *LOCAL(0) 127.0.0.1 5 l 40 64 377 0.000 0.000 0.001 timeserver.doma XXX.YYY.22.169 1 u 43 128 377 0.489 51.261 58.975 XXX.YYY.22.169 is the address of the host I'm working on. A reverse lookup on the IP address in my ntp.conf file validates that the ntpq output is correctly naming the remote server. However, as you can see, it appears to just roll over to my .LOCL. time server. Also, ntptrace just returns the local time server, and ntptrace XXX.YYY.4.21 times out. $ ntptrace localhost.localdomain: stratum 6, offset 0.000000, synch distance 0.948181 $ ntptrace XXX.YYY.4.21 XXX.YYY.4.21: timed out, nothing received ***Request timed out This looks like my ntp daemon is just querying itself. I am thinking about the possibility that the router-I-don't-control between my test network timeserver and the corporate network timeserver is blocking on source port. (I think ntpdate sends on port 123, which gets it around that filter and is why I can't use it while ntpd is running.) I have email in to the network folks to check that. Finally, telnet XXX.YYY.4.21 123 never times out or completes a connection. The questions: What am I missing, here? What else can I check to try to figure out where this connection is failing? Would strace ntptrace XXX.YYY.4.21 show me the source port ntptrace is sending from? I can deconstruct most strace calls, but I can't figure out the location of that datum. If I can't directly examine the gateway router between my test network and the timeserver, how might I build evidence that it's responsible for these disconnections? Alternately, how might I rule it out?

  Read the article

< Previous Page | 156 157 158 159 160 161 162 163 164 165 166 167  | Next Page >