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8

Here are ways to get your Linux machine IP address: /sbin/ifconfig If you know the name of your Network Interface card, you can specify it in the command and get the results for that specific NIC: /sbin/ifconfig eth0 Another command is: /sbin/ip addr If you know the name of your Network Interface card, you can specify it in the command and get the ...


7

Disclaimer: This answer was speculation one until GMail person confirmed it. Looks like it's GMail mishandle your fetched email here. Some peoples also report similar case with yours in here, here or here The problem is: GMail also deploying SPF measure when scanning email after fetching it via POP3. Normally SPF-checking take place in SMTP transaction ...


7

My suggestion is to read the information provided. java.net.ConnectException: Connection refused; This generally means nothing is listening on the specified IP:Port. Note also this information is provided http://wiki.apache.org/hadoop/ConnectionRefused and it's first line You get a ConnectionRefused Exception when there is a machine at the ...


4

Even if they could reclaim every unused IP (no easy task), it will only postpone things a short period of time. Delaying won't solve the problem.


4

I used chain which logs everything with limits so it won't spam your syslog $IPT -N DUMP > /dev/null $IPT -F DUMP $IPT -A DUMP -p tcp -m limit --limit 3/minute --limit-burst 3 -j LOG --log-prefix "TCP DUMP: " $IPT -A DUMP -p udp -m limit --limit 3/minute --limit-burst 3 -j LOG --log-prefix "UDP DUMP: " $IPT -A DUMP -p tcp -j REJECT --reject-with ...


4

Set a route to the payment processor via the dedicated IP. The ip route add command is your friend.


3

That's one of a pair of routes that certain VPN software sets when you tell it to redirect all of your traffic through the VPN. The other route is: 0.0.0.0/1 via 10.144.1.8 dev ppp0 ... The reason for setting these routes, of course, is so that (almost) all of your traffic goes through the VPN link. It is done this way so as not to override the default ...


3

Easy: Because you didn't define an A record for it. A dig +trace +additional ns1.imagihost.com A shows us your nameservers, the glue records, and the output from a nameserver responsible for imagihost.com: imagihost.com. 172800 IN NS ns2.altairhost.com. imagihost.com. 172800 IN NS ns1.altairhost.com. ...


2

Basically, they cannot. They can identify the country and the ISP of the originating IP address (you can do this for example using https://apps.db.ripe.net/search/query.html, the API also can be used to add some automation level), but not the type of connection. Some ISP do indicate the type of connection in the reverse-lookup DNS records, but this isn't a ...


2

This commands scans all IP addresses in a range and shows the MAC address of each IP address. It does this in a greppable format, or in other words; displays IP and MAC address on a single line. Thats handy if you want to export to Excel or run a grep on it. nmap -n -sP 10.0.3.0/24 | awk '/Nmap scan report/{printf $5;printf " ";getline;getline;print $3;}' ...


1

What's at 198.231? Presumably it's a NAT address for traffic being sent to the internet via your 192.168.1 network? Your default gateway's on the inside interface, so that's the path that will be taken to get the internet. You'll need to determine what you want this server's networking configuration to look like from a routing perspective; perhaps default ...


1

Am I correct in assuming that SNI is essentially globally supported now? If you consider browsers - yes. If you have to deal with other kind of applications - not really: Python 3 has support, but Python 2.7. got only support with the just released version 2.7.9 Android has limited support. The HTTPUrlConnection had support for a long time, but the ...


1

Am I correct in assuming that SNI is essentially globally supported now? Essentially, yes - though you'll likely run into some edge case users who will complain about brokenness if SNI is required. If you have the capability to tell those people "use a browser from this decade, please" for your service, then you're set. Are there scenarios that I ...


1

It seems to be a bug that Gmail does not respect the ESMTPA in the Received header to show the MUA is a trusted host. Some possible workarounds come to mind: use split MX, that is, one Exim instance to receive and forward from authenticated clients, and a second to receive into mailboxes. That simulates the ISP-to-ISP mail that Gmail may be expecting, ...


1

Pointing the A record to the IP of 127.0.0.1 will definitely do what you want, yup.


1

Still no look up in this case. whatever is after the / in your url is meaningless for dns, it is just a page address on the server. DNS is just there for your browser to find the server. Apache (or whatever web server your using) will be in charge of finding the ressource.


1

Although what you've come up with is clever, one issue would be that routing of the packets could switch back and forth between the two machines arbitrarily. I emphasize packets, not TCP connections. So randomly TCP connections would be reset as the routing bounces back and forth. For a pure single-packet UDP service, you might have a little bit better ...


1

Configure a virtual IP (in the APIPA range) on another (and maybe less important) server that is on the same physical subnet as the problematic server, and then you'll be able to connect.



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