Vacationloading658

System redhat7
, httpd started

Why does the above command only show tcp6 but not tcp?

After listening to tcp6, tcp can also be used.

Httpd: Updated IPv6 route display with Asus's GPL 1354 implementation Loading branch information; RMerl committed Feb 12, 2016. 1 parent c61499d.

1. How To Turn On IPv6 in NGINX and Apache. Before you begin, you’ll need to make sure your web server is even accessible over IPv6. This will usually involve you requesting an IPv6 address from your VPS provider. For AWS, IPv6 addresses are created automatically for EC2 instances, and are assigned to the ENI—not the instance itself.
2. If your report represented a question or confusion about how to use an httpd feature, an unexpected server behavior, problems building or installing httpd, or working with an external component (a third party module, browser etc.) we ask you to start by bringing your question to the User Support and Discussion mailing list, see https://httpd.

Although this only shows the port monitor of IPv6, it does not mean that only IPv6 connections are accepted. In fact, apache will accept IPv4 connections by mapped address (::FFFF:a.b.c.d). Except for a few platforms such as FreeBSD, NetBSD and OpenBSD, Apache has enabled the-enable-v4-mapped option by default when compiling. Therefore, Apache will accept both IPv6 and IPv4 connection requests.
Unless IPV6_V6ONLY mode is on, two different socket are needed to listen to IPv6 and IPv4 respectively. IPv6 _ V6Only mode can be controlled by sysctl net.ipv6.bindv6only, which is off by default. If you really want to see only the monitoring of IPv4 port in netstat, then you can fix apachezhttp.conf to
Listen 80
Revise to
Listen 0.0.0.0:80

For specific information, please refer tohttp://httpd.apache.org/docs/ …

Since 2002, Nmap has offered IPv6 support for its most popularfeatures. In particular, ping scanning (TCP-only), connectscanning, and version detection all support IPv6. The command syntaxis the same as usual except that you also add the -6option. Of course, you must use IPv6 syntax if you specify an addressrather than a hostname. An address might look like3ffe:7501:4819:2000:210:f3ff:fe03:14d0, so hostnamesare recommended. Example 4.4 shows atypical port scanning session. The output looks the same as it usuallydoes, with the IPv6 address on the “interesting ports”line being the only IPv6 give away.

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Example 4.4. A simple IPv6 scan

Centos Httpd Ipv6 Only

While IPv6 hasn't exactly taken the world by storm, it getssignificant use in some countries and most modernoperating systems support it. To use Nmap with IPv6, both the sourceand target of your scan must be configured for IPv6. If your ISP(like most of them) does not allocate IPv6 addresses to you, freetunnel brokersare widely available and work fine with Nmap.I use the free IPv6 tunnel broker service athttp://www.tunnelbroker.net. Other tunnel brokers arelistedat Wikipedia. Coreldraw x6 for mac os torrent. 6to4 tunnels are another popular, freeapproach.

Httpd Ipv6 Ip

Systems that support IPv6 don't always have their IPv4 and IPv6firewall rules in sync. the section called “IPv6 Attacks”shows a real-life example of reaching ports through IPv6 that arefiltered in IPv4.

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