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  • Logs show lots of user attempts from unknown IP

    - by rodling
    I lost access to my instance which I host on AWS. Keypairing stopped to work. I detached a volume and attached it to a new instance and what I found in logs was a long list of Nov 6 20:15:32 domU-12-31-39-01-7E-8A sshd[4925]: Invalid user cyrus from 210.193.52.113 Nov 6 20:15:32 domU-12-31-39-01-7E-8A sshd[4925]: input_userauth_request: invalid user cyrus [preauth] Nov 6 20:15:33 domU-12-31-39-01-7E-8A sshd[4925]: Received disconnect from 210.193.52.113: 11: Bye Bye [preauth] Where "cyrus" is changed by hundreds if not thousands of common names and items. What could this be? Brute force attack or something else malicious? I traced IP to Singapore, and I have no connection to Singapore. May thought is that this was a DoS attack since I lost access and server seemed to stop working. Im not to versed on this, but ideas and solutions for this issue are welcome.

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  • Iptables to lock down compromised server to a single ip

    - by ollybee
    I have a Linux server which is compromised, I can see nasty looking perl scripts executing with root privileges. I want to get some data off it before I wipe it. How can I block all inbound and outbound traffic except for my ip? It's a Centos server I assume i can do this with iptables? I'm aware a the server is rooted there is a possibility that attackers could have made changes on the server that would prevent this from working. Ill be testing to make sure and only have the server online for a couple of hours before it is nuked.

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  • Converting an int to an IP address

    - by User1
    Is there an easy way to convert an int to an IP address in PostgreSQL? I was able to go from IP to int using this code: SELECT inet '1.2.3.4'-'0.0.0.0' This doesn't work: SELECT 16909060::inet I didn't see anything in the documentation. Does anyone know how to do this?

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  • IP packet proxy solutions? Riverbed alternative

    - by Ruvan
    I have stumbled upon Riverbed.com's products which basically has the capability to hash chunks of IP data and subsequently store them to disk. I'm looking for an open source / cheaper alternative. WANProxy is the exact equivalent except that it only keeps data in-memory and can't store the data to disk which is a requirement for our solution. I'm basically looking for a proxy which not only looks at the files (filenames) but the data itself being transmitted at the packet level. Anyone? Thanks!

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  • Which handsets work with IP DECT base?

    - by waldrumpus
    My workplace uses an Ascom IP DECT base station (IPBS1), and Ascom handsets as well. We're looking to replace some broken handsets; the ones by Ascom, however, are rather expensive, and we're not altogether satisfied with their quality. I've been looking at handsets from other manufacturers, which are much less expensive - however, since I don't know anything about DECT, VOIP, etc, I don't know if they will work with the base. I've perused the base's manual, but found nothing on handset compatibility. How can I find out what kind of handset works with our base?

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  • What's the difference between using ProtocolType.IP and ProtocolType.Tcp

    - by Sekhat
    I've just answered problem with sockets in c# where in my example code I initializing my socket using ProtocolType.IP as this is what I've always used in my own code, and it has never caused me problems. But I see many examples specifying ProtocolType.Tcp. I guess, what I'm asking is, by using ProtocolType.IP instead of ProtocolType.Tcp is anything being performed differently under the hood that I should be aware of?

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  • Too Many ESTABLISHED connection from a single IP address in Apache

    - by ananthan
    netstat -ntp |grep 80 shows too many ESTABLISHED connection from single IP address. Around 300 of them and it is not an attack and user is using a 2G connection to access Apache. This is the case with other 2G connections also. As a result of this Apache is running out of children. Earlier it was showing too many close_wait and after enabling tcp_tw_reuse and tcp_tw-recycle there is not much close_wait but the number of ESTABLISHED connections increased. We are using Ubuntu 11.04 having 48 GB ram keepalive On keepalive timeout 10 max clients 800 max-request-perchild 4000 timeout 300 I have set syn_ack to 1 and syn_retries to 2. On wifi there is no such issue. Connections are closing properly, but with 2G connections Apache is running out of children and too many ESTABLISHED connection. also i have tried setting timeout from default 300 to 30,but since our project is image hosting for mobile phones,clients couldn't upload images properly as they are getting frequent time out.Also there were a lot of 408 messages so changed it to the default 300

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  • Point IP to site for testing before delegation?

    - by cosmicbdog
    I'm migrating to a new server and would like to test before redelegating the domain over. I have some familiarity with setting up apache virtual hosts, but limited knowledge. How can I go about setting this up? My server already has a domain delegated to the server, and the IP by default has been setup to point to that. I've been told I can just add an entry to /etc/hosts/ which I haven't been able to understand what I can add in there to make this work. Any pointers would be greatly appreciated!

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  • Masquerade traffic from certain source IP to VPN connection

    - by Shuo Ran
    Network Setup: 10.0.0.1 Router: to internet 10.0.0.70 Server: Ubuntu based server,default gateway is 10.0.0.1 10.0.0.51 PC I created a PPTP connection(interface: ppp0) on Server to a machine on the internet, what I want to do is route all the traffic from certain IP address(10.0.0.51) through the PPTP connection and then to the internet. What I did are: Set the gateway on PC(10.0.0.51) as 10.0.0.70 Enabled ipv4 forward on 10,0,0,70 Add the masquerade rule to iptable: iptables -t nat -A POSTROUTING -o ppp0 -s 10.0.0.51 -j MASQUERADE After that, it seems none of the traffic from 10.0.0.51 be redirected to ppp0, instead these traffic are still going through 10.0.0.1 directly. Any thoughts on it?

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  • Two IP ranges on eth1 configuration for centos 6.2

    - by Trickzzz
    i have a dedicated server, with "Virtuozzo" on it running VPS's. I have: eth0 - which is configured to the internal network, that one is fine. Now I have: eth1 - which has two ranges routed through this device. x.x.134.x (which has 12 IP's sequentially) x.x.132.x (which has 5) eth1: DEVICE="eth1" HWADDR="00:25:90:37:65:67" NM_CONTROLLED="yes" ONBOOT="yes" IPADDR="x.x.134.x" NETMASK="255.255.255.240" GATEWAY="x.x.134.x" I tried using this with another file as well named "ifcfg-eth1:1" in /etc/sysconfig/network-scripts/ any ideas why the containers on eth1:1 would not link up to the network? Virtuozzo also thinks that eth1:1 is the primary network now, which isn't right?

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  • Testing a broken IP.

    - by wreing
    I'm trying to test an application and I need to make an valid IP not respond from a one of my test servers but not the others. I could do this for an fqdn using /etc/hosts but I'd like to do it for an IP. Any suggestions?

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  • IIS 7.5 Site being redirected from hostname to IP

    - by TuxOtaku
    So here's the problem. I have a site in IIS that is being redirected from the site's hostname to its IP address. The problem is, I haven't even set up redirects at all for the site; and yet when I analyze the headers that come through as the page loads, I see clear as day, "302 Temporary Redirect". What could be causing this? I thought perhaps it was something in my application's DB (it's a PHP/MySQL application), but I have ruled that out. I also thought that it might be a rewrite rule somewhere, so I deleted all my rewrite rules as well.

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  • htaccess turn on php flags if certain IP address

    - by fire
    In my .htaccess file I need to turn on the following: php_flag display_errors On php_value error_reporting 2147483647 However I only want to do this if my IP is visiting the site. Any ideas? Something like... if (ip == "x.x.x.x") { php_flag display_errors On php_value error_reporting 2147483647 } Need to do this in .htaccess NOT in the PHP thanks!

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  • cant access my local web server with the external IP

    - by TommyG
    I havent been able to find a solution to my particular problem. I have a MAC which I set up as a web server and configured my router to forward to the local IP. When trying to access my site from outside, it does say "It works!", however, when I call a simple Hello World PHP script that I have, I am getting an error that the page could not be opened. I did enable PHP on my machine so thats not the problem. I really have no idea how can I access - I followed so many tutorials and did everything correctly. My router is a Linksys WRT160N if it matters at all. In the port forwarding section, I selected to forward

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  • WIN32_NetworkAdapterConfiguration does not report IP from PPP adapter

    - by Michael
    On a Windows 7 device, the following WMI query does not report back an enabled PPP adapter: Select Index,MACAddress,IPAddress,IPSubnet,DefaultIPGateway,DNSServerSearchOrder from Win32_NetworkAdapterConfiguration where IPEnabled=true Where ipconfig gives you all the information correctly: Windows IP Configuration PPP adapter XYZ VPN: Connection-specific DNS Suffix . : IPv4 Address. . . . . . . . . . . : 123.456.789.123 Subnet Mask . . . . . . . . . . . : 255.255.255.255 Default Gateway . . . . . . . . . : 0.0.0.0 Wireless LAN adapter Wireless Network Connection: Connection-specific DNS Suffix . : IPv4 Address. . . . . . . . . . . : 192.168.178.11 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 192.168.178.1 Ethernet adapter Local Area Connection 3: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Any ideas how I can script this by using WMI or VBS?

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  • DRBD not syncing between my nodes when IP is reset

    - by ramdaz
    I am trying to setup DRBD by following the article at http://www.howtoforge.com/setting-up-network-raid1-with-drbd-on-ubuntu-11.10-p2 I am using Ubuntu 10.04 DRBD - 8.3.11 In the first run I had everything working perfectly and when shifting the systems to a production environment I decided to restart the Meta Data creation part and start from scratch. The IPs had changed entirely in the production environment. Issuing drdbadm create-md r0 in both the servers runs successfully. But when I do "drbdadm -- --overwrite-data-of-peer primary all" on the primary it fails to start the re sync. My config file is as given below resource r0 { protocol C; syncer { rate 50M; } startup { wfc-timeout 15; degr-wfc-timeout 60; } net { cram-hmac-alg sha1; shared-secret "aklsadkjlhdbskjndsf8738734jkfkjfkjf"; } on primaryds { device /dev/drbd0; disk /dev/md2; address 172.16.7.1:7788; meta-disk internal; } on secondaryds { device /dev/drbd0; disk /dev/md2; address 172.16.7.3:7788; meta-disk internal; } } Status on primary root at primaryds:~# cat /proc/drbd version: 8.3.7 (api:88/proto:86-91) GIT-hash: ea9e28dbff98e331a62bcbcc63a6135808fe2917 build by root at primaryds, 2012-05-12 15:08:01 0: cs:WFBitMapS ro:Primary/Secondary ds:UpToDate/Inconsistent C r---- ns:0 nr:0 dw:0 dr:200 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:b oos:5690352828 Status on secondary root at secondaryds:/etc/drbd.d# cat /proc/drbd version: 8.3.7 (api:88/proto:86-91) GIT-hash: ea9e28dbff98e331a62bcbcc63a6135808fe2917 build by root at secondaryds, 2012-05-12 15:25:25 0: cs:WFBitMapT ro:Secondary/Primary ds:Inconsistent/UpToDate C r---- ns:0 nr:0 dw:0 dr:0 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:b oos:5690352828 Log of Primary May 30 13:42:23 primaryds kernel: [ 1584.057076] block drbd0: role( Secondary -> Primary ) disk( Inconsistent -> UpToDate ) May 30 13:42:23 primaryds kernel: [ 1584.086264] block drbd0: Forced to consider local data as UpToDate! May 30 13:42:23 primaryds kernel: [ 1584.086303] block drbd0: Creating new current UUID May 30 13:42:26 primaryds kernel: [ 1586.405551] block drbd0: drbd_sync_handshake: May 30 13:42:26 primaryds kernel: [ 1586.405564] block drbd0: self E8A075F378173D4B:0000000000000004:0000000000000000:0000000000000000 bits:1422588207 flags:0 May 30 13:42:26 primaryds kernel: [ 1586.405574] block drbd0: peer 0000000000000004:0000000000000000:0000000000000000:0000000000000000 bits:1422588207 flags:0 May 30 13:42:26 primaryds kernel: [ 1586.405582] block drbd0: uuid_compare()=2 by rule 30 May 30 13:42:26 primaryds kernel: [ 1586.405587] block drbd0: Becoming sync source due to disk states. May 30 13:42:26 primaryds kernel: [ 1586.405592] block drbd0: Writing the whole bitmap, full sync required after drbd_sync_handshake. May 30 13:42:27 primaryds kernel: [ 1588.171638] block drbd0: 5427 GB (1422588207 bits) marked out-of-sync by on disk bit-map. May 30 13:42:27 primaryds kernel: [ 1588.172769] block drbd0: conn( Connected -> WFBitMapS ) Log in Secondary May 30 13:42:24 secondaryds kernel: [ 1563.304894] block drbd0: peer( Secondary - Primary ) pdsk( Inconsistent - UpToDate ) May 30 13:42:24 secondaryds kernel: [ 1563.339674] block drbd0: drbd_sync_handshake: May 30 13:42:24 secondaryds kernel: [ 1563.339685] block drbd0: self 0000000000000004:0000000000000000:0000000000000000:0000000000000000 bits:1422588207 flags:0 May 30 13:42:24 secondaryds kernel: [ 1563.339695] block drbd0: peer E8A075F378173D4B:0000000000000004:0000000000000000:0000000000000000 bits:1422588207 flags:0 May 30 13:42:24 secondaryds kernel: [ 1563.339703] block drbd0: uuid_compare()=-2 by rule 20 May 30 13:42:24 secondaryds kernel: [ 1563.339709] block drbd0: Becoming sync target due to disk states. May 30 13:42:24 secondaryds kernel: [ 1563.339714] block drbd0: Writing the whole bitmap, full sync required after drbd_sync_handshake. May 30 13:42:26 secondaryds kernel: [ 1565.652342] block drbd0: 5427 GB (1422588207 bits) marked out-of-sync by on disk bit-map. May 30 13:42:26 secondaryds kernel: [ 1565.652965] block drbd0: conn( Connected - WFBitMapT ) The serves are not responding once it reaches this stage. Tried redoing it couple of time but noting happens. Why could the resync not be taking place? I would like some advice? Directions?

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  • send and recive packet in the Lan with multiple mac Addresses in C#

    - by MGH
    Hi , in our Network bandwith assign to mac address and if you can get more than one , you can get more bandwith :) if there any application or class in C# that can do this .... I'm already have the http proxy or port maper to send packets in different ip addresses but because of they are use same mac address it won't work . Any help is appreciated .

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  • Howto check if two hosts are the same

    - by Michael Stoll
    Hi, I just came across an issue, where I had to check if a path points into a windows share. Part of this problem is to check if host A is the same as host B. Where host A and host B can be one of the following {IPv4-Address, IPv6-Address, Hostname, FQDN}. As I do not need to be exact it's enough to resolve and compare the IP-Addresses in my case. But is there, theoretically, a method to check if the hosts are the same?

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  • Trouble with site-to-site OpenVPN & pfSense not passing traffic

    - by JohnCC
    I'm trying to get an OpenVPN tunnel going on pfSense 1.2.3-RELEASE running on embedded routers. I have a local LAN 10.34.43.0/254. The remote LAN is 10.200.1.0/24. The local pfSense is configured as the client, and the remote is configured as the server. My OpenVPN tunnel is using the IP range 10.99.89.0/24 internally. There are also some additional LANs on the remote side routed through the tunnel, but the issue is not with those since my connectivity fails before that point in the chain. The tunnel comes up fine and the logs look healthy. What I find is this:- I can ping and telnet to the remote LAN and the additional remote LANs from the local pfSense box's shell. I cannot ping or telnet to any remote LANs from the local network. I cannot ping or telnet to the local network from the remote LAN or the remote pfSense box's shell. If I tcpdump the tun interfaces on both sides and ping from the local LAN, I see the packets hit the tunnel locally, but they do not appear on the remote side (nor do they appear on the remote LAN interface if I tcpdump that). If I tcpdump the tun interfaces on both sides and ping from the local pfSense shell, I see the packets hit the tunnel locally, and exit the remote side. I can also tcpdump the remote LAN interface and see them pass there too. If I tcpdump the tun interfaces on both sides and ping from the remote pfSense shell, I see the packets hit the remote tun but they do not emerge from the local one. Here is the config file the remote side is using:- #user nobody #group nobody daemon keepalive 10 60 ping-timer-rem persist-tun persist-key dev tun proto udp cipher BF-CBC up /etc/rc.filter_configure down /etc/rc.filter_configure server 10.99.89.0 255.255.255.0 client-config-dir /var/etc/openvpn_csc push "route 10.200.1.0 255.255.255.0" lport <port> route 10.34.43.0 255.255.255.0 ca /var/etc/openvpn_server0.ca cert /var/etc/openvpn_server0.cert key /var/etc/openvpn_server0.key dh /var/etc/openvpn_server0.dh comp-lzo push "route 205.217.5.128 255.255.255.224" push "route 205.217.5.64 255.255.255.224" push "route 165.193.147.128 255.255.255.224" push "route 165.193.147.32 255.255.255.240" push "route 192.168.1.16 255.255.255.240" push "route 192.168.2.16 255.255.255.240" Here is the local config:- writepid /var/run/openvpn_client0.pid #user nobody #group nobody daemon keepalive 10 60 ping-timer-rem persist-tun persist-key dev tun proto udp cipher BF-CBC up /etc/rc.filter_configure down /etc/rc.filter_configure remote <host> <port> client lport 1194 ifconfig 10.99.89.2 10.99.89.1 ca /var/etc/openvpn_client0.ca cert /var/etc/openvpn_client0.cert key /var/etc/openvpn_client0.key comp-lzo You can see the relevant parts of the routing tables extracted from pfSense here http://pastie.org/5365800 The local firewall permits all ICMP from the LAN, and my PC is allowed everything to anywhere. The remote firewall treats its LAN as trusted and permits all traffic on that interface. Can anyone suggest why this is not working, and what I could try next?

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  • What networking hardware do I need in this situation (Fairpoint [ISP] "E-DIA" connection)?

    - by Tegeril
    Right away you'd probably want to say, "Well just ask Fairpoint." I've done that, a number of times in as many different ways I can phrase it and just keep hitting a brick wall where they will not commit to giving any useful information and instead recommend contracting an outside firm and spending a pile of money. Anyway... I'm trying to help a family member out with an office connection that is being setup. I've managed to scrape tiny details here and there from our discussions with the ISP (Fairpoint in Maine) about what is going to be done and what is going to be needed. This is the connection that is being setup: http://www.fairpoint.com/enterprise/vantagepoint/e-dia/index.jsp Information I have been given: Via this connection I can get IPs across different C blocks if that were necessary (it is not) Fairpoint is bringing hardware with them that they claim simply does the conversion from whatever line is coming in the building to ethernet, they have referred to this as the "Fairpoint Netvanta" which I know suggests a line of products that I have looked up, but some (most? all?) of those seems to handle all the routing that I saw. Fairpoint says that I need to bring my own router to sit behind their device. They have literally declined to even suggest products that have worked for other clients in the past and fall back on "any business router works, not a home router." That alone makes my head spin. Detail and clarity hit a brick wall from there. At one moment I got them to cough up that the router I provide needs to be able to do VPN tunneling but they typically fall back to "not a home router" and I was even given "just a business router, Cisco or something, it'll be $500-$1000". Now I know that VPN tunneling routers exist well below that price point and since this connection is going to one machine, possibly two only via ethernet, my desire to purchase networking hardware that over-delivers what I need is not very high. They are literally setting all this up, have provided no configuration details for after they finish, and expect me to just plunk a $500+ router behind it and cross my fingers or contract out to a third party company. If there were other options available for the location, I would have dropped them in a second, but there aren't. The device that is connected requires a static IP and I'm honestly a bit hazy on the necessity of an additional router behind their device and generally a bit over my head. I presume that the router needs to be able to serve external static IPs to its clients, but I really don't know what is going to show up when they come to do the install. This was originally going to be run via an ADSL bridge modem with a range of static IPs (which is easy and is currently setup properly) but the location is too far from the telco to get speeds that we really want for upload and this is also a connection that needs high availability. Any suggestions would be greatly appreciated (I see a number of options in the Cisco Small Business line and other competitors that aren't going to break the bank…), especially if you've worked with Fairpoint before! Thanks for reading my wall of text.

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  • How to Validate mac address & ipaddress in client side(using javascript) & server side(using c#)

    - by amexn
    My team doing a project related to network using Asp.net MVC(c#). I need to validate mac address & ipaddress in client side(using javascript) & server side(using c#). I didn't get a good solution for validating mac address & ip addresss. I searched google for finding a good user interface for validating mac address by giving colon after two number eg: "XX:XX:XX:XX:XX:XX" by using Masked Input.Please give reference/guidance for implementing this. Any jquery plugin for implementing Masked Input.

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  • How to detect changes to Address Book after ABPersonViewController presentation

    - by nkhorman
    I have two view controllers that allow changes to the Address Book. The first one lets you add or create an entry based on an ABRedordRef or edit an existing ABRecordRef, by presentation of either ABUnknownPersonViewController or ABPersonViewController. The second one is a standard ABPeoplePickerNavigationController that allows you to view/edit any of the contents of the Address Book. Both views are accessible easily accessible to the use via the main application UITabBarController. How can I determine that changes were made by either view controller, so that I can force data dependency changes to a third separate view controller. I thought that I saw a notification center message that I could subscribe to, but I can't seem to find it again... I don't care if the notification center is the method that should be used, or a delegate protocol or... whatever, I don't care, I just need to know how to detect the change or the need to re-sync with the Address Book. Can someone Please point me in the right direction. Thank you.

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  • Hide Address bar for Xpages Mobile Web Application on Ipad (iOS5) and Mobile safari (v5.1)

    - by prasad katankot
    With reference to the question I asked couple of days back, it seems to me that address bar cannot be hidden from a xpages mobile web application when it is launched from a href link. Choice is limited to href as "location.assign" or any javascript will not work on mails accessed by lotus traveller. I tried almost 20 different variations published by other experts to hide address bar and none seems to work. Am I wrong in stating that "it is not possible to hide address bar in Xpages mobile web application on ipad when not launched from home screen"?

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  • Checking for a valid and in-use email address in PHP

    - by espais
    I'm not sure if this is exactly possible, but figured I'd throw it out there. I have a client that is getting some hate-mail from somebody he knows via a contact form on a website that I developed for him. Currently I do the normal checks for a validly-formatted email address, along with a Captcha, but the client has requested that a user enter his/her own email address in the form. Now I realize that something like this could be easily spoofed by setting up a fake Yahoo account, etc, but the client's thinking is that this person is not quite that computer-literate. Is there any possibility for checking if an email address is valid and in-use? The only other things I can think of is turning his contact form into a mailto: link.

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