Should i use CNAME for my domain to hide the original public IP address












0















I have one domain example.com which is associated with four public IP address. I want to hide my four public IPs during dig/host etc. Should I use CNAME to hide my original public IP's?



What will be the pros and cons if I choose CNAME?



Example:



MacBook-Pro-4:~ Raj$ dig example.com

; <<>> DiG 9.10.6 <<>> example.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 5974
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;example.com IN A

;; ANSWER SECTION:
example.com. 60 IN A 22.11.33.111
example.com. 60 IN A 22.11.33.112
example.com. 60 IN A 22.11.33.113
example.com. 60 IN A 22.11.33.114









share|improve this question




















  • 1





    Why do you want to hide the IP address?

    – HazardousGlitch
    Jan 11 at 12:17
















0















I have one domain example.com which is associated with four public IP address. I want to hide my four public IPs during dig/host etc. Should I use CNAME to hide my original public IP's?



What will be the pros and cons if I choose CNAME?



Example:



MacBook-Pro-4:~ Raj$ dig example.com

; <<>> DiG 9.10.6 <<>> example.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 5974
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;example.com IN A

;; ANSWER SECTION:
example.com. 60 IN A 22.11.33.111
example.com. 60 IN A 22.11.33.112
example.com. 60 IN A 22.11.33.113
example.com. 60 IN A 22.11.33.114









share|improve this question




















  • 1





    Why do you want to hide the IP address?

    – HazardousGlitch
    Jan 11 at 12:17














0












0








0








I have one domain example.com which is associated with four public IP address. I want to hide my four public IPs during dig/host etc. Should I use CNAME to hide my original public IP's?



What will be the pros and cons if I choose CNAME?



Example:



MacBook-Pro-4:~ Raj$ dig example.com

; <<>> DiG 9.10.6 <<>> example.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 5974
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;example.com IN A

;; ANSWER SECTION:
example.com. 60 IN A 22.11.33.111
example.com. 60 IN A 22.11.33.112
example.com. 60 IN A 22.11.33.113
example.com. 60 IN A 22.11.33.114









share|improve this question
















I have one domain example.com which is associated with four public IP address. I want to hide my four public IPs during dig/host etc. Should I use CNAME to hide my original public IP's?



What will be the pros and cons if I choose CNAME?



Example:



MacBook-Pro-4:~ Raj$ dig example.com

; <<>> DiG 9.10.6 <<>> example.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 5974
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;example.com IN A

;; ANSWER SECTION:
example.com. 60 IN A 22.11.33.111
example.com. 60 IN A 22.11.33.112
example.com. 60 IN A 22.11.33.113
example.com. 60 IN A 22.11.33.114






linux security dns ip domain






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Jan 11 at 11:34









Twisty Impersonator

18.2k146597




18.2k146597










asked Jan 11 at 11:15









AL-Linux-AWSAL-Linux-AWS

1




1








  • 1





    Why do you want to hide the IP address?

    – HazardousGlitch
    Jan 11 at 12:17














  • 1





    Why do you want to hide the IP address?

    – HazardousGlitch
    Jan 11 at 12:17








1




1





Why do you want to hide the IP address?

– HazardousGlitch
Jan 11 at 12:17





Why do you want to hide the IP address?

– HazardousGlitch
Jan 11 at 12:17










2 Answers
2






active

oldest

votes


















4














Using CNAME will simply redirect your name to different FQDN which should in turn resolve to IP address (possibly the same you are pointing to directly right now).



There is no way to hide your IP address if you want the site to be reachable. One way or another, the name must finally resolve to the address.






share|improve this answer































    3














    If you intend to accept direct connections over the Internet at your public IP addresses, then you cannot hide them, else other computers on the Internet won't be able to communicate with the computers at those IP addresses.



    CNAME records don't hide IP addresses. They are used to create aliases for other DNS entries. When a DNS lookup encounters a CNAME record it causes the DNS resolution process to "start over" using the name returned by the CNAME record.



    For example, suppose you may have a CNAME record named alias.example.com pointing to the name server.example.com. When a user accesses alias.example.com, their DNS resolver will:




    1. Look up alias.example.com

    2. Encounter the CNAME record

    3. Start a new lookup for the name server.example.com

    4. Obtain the IP address of server.example.com


    In the end, the IP address of server.example.com must be revealed an order for communication to occur over the Internet.






    share|improve this answer


























    • How Akami is hiding A record "MacBook-Pro-4:~ Raj$ host akami.com akami.com mail is handled by 5 alt1.aspmx.l.google.com. akami.com mail is handled by 1 aspmx.l.google.com. akami.com mail is handled by 10 aspmx2.googlemail.com. akami.com mail is handled by 10 aspmx3.googlemail.com. akami.com mail is handled by 5 alt2.aspmx.l.google.com."

      – AL-Linux-AWS
      Jan 11 at 11:56













    • MacBook-Pro-4:~ raj$ dig akami.com ; <<>> DiG 9.10.6 <<>> akami.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 47181 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;akami.com. IN A ;; AUTHORITY SECTION: akami.com. 10800 IN SOA prod-unix-extdns04.akamai.com. hostmaster.akamai.com. 2012011701 259200 21600 15724800 1209600

      – AL-Linux-AWS
      Jan 11 at 11:57













    • Is there any service like site-shied from Akami to hide the A record ?

      – AL-Linux-AWS
      Jan 11 at 11:59











    • akamai.com/uk/en/products/cloud-security/site-shield.jsp

      – AL-Linux-AWS
      Jan 11 at 12:00











    • Services such as this essentially proxy your traffic. But if you set up something like this, you would own the proxy to which the remote users connect, bringing you full circle back to hosting servers on IP addresses directly accessed by remote users.

      – Twisty Impersonator
      Jan 11 at 13:30











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    2 Answers
    2






    active

    oldest

    votes








    2 Answers
    2






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    4














    Using CNAME will simply redirect your name to different FQDN which should in turn resolve to IP address (possibly the same you are pointing to directly right now).



    There is no way to hide your IP address if you want the site to be reachable. One way or another, the name must finally resolve to the address.






    share|improve this answer




























      4














      Using CNAME will simply redirect your name to different FQDN which should in turn resolve to IP address (possibly the same you are pointing to directly right now).



      There is no way to hide your IP address if you want the site to be reachable. One way or another, the name must finally resolve to the address.






      share|improve this answer


























        4












        4








        4







        Using CNAME will simply redirect your name to different FQDN which should in turn resolve to IP address (possibly the same you are pointing to directly right now).



        There is no way to hide your IP address if you want the site to be reachable. One way or another, the name must finally resolve to the address.






        share|improve this answer













        Using CNAME will simply redirect your name to different FQDN which should in turn resolve to IP address (possibly the same you are pointing to directly right now).



        There is no way to hide your IP address if you want the site to be reachable. One way or another, the name must finally resolve to the address.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Jan 11 at 11:22









        TomekTomek

        22624




        22624

























            3














            If you intend to accept direct connections over the Internet at your public IP addresses, then you cannot hide them, else other computers on the Internet won't be able to communicate with the computers at those IP addresses.



            CNAME records don't hide IP addresses. They are used to create aliases for other DNS entries. When a DNS lookup encounters a CNAME record it causes the DNS resolution process to "start over" using the name returned by the CNAME record.



            For example, suppose you may have a CNAME record named alias.example.com pointing to the name server.example.com. When a user accesses alias.example.com, their DNS resolver will:




            1. Look up alias.example.com

            2. Encounter the CNAME record

            3. Start a new lookup for the name server.example.com

            4. Obtain the IP address of server.example.com


            In the end, the IP address of server.example.com must be revealed an order for communication to occur over the Internet.






            share|improve this answer


























            • How Akami is hiding A record "MacBook-Pro-4:~ Raj$ host akami.com akami.com mail is handled by 5 alt1.aspmx.l.google.com. akami.com mail is handled by 1 aspmx.l.google.com. akami.com mail is handled by 10 aspmx2.googlemail.com. akami.com mail is handled by 10 aspmx3.googlemail.com. akami.com mail is handled by 5 alt2.aspmx.l.google.com."

              – AL-Linux-AWS
              Jan 11 at 11:56













            • MacBook-Pro-4:~ raj$ dig akami.com ; <<>> DiG 9.10.6 <<>> akami.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 47181 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;akami.com. IN A ;; AUTHORITY SECTION: akami.com. 10800 IN SOA prod-unix-extdns04.akamai.com. hostmaster.akamai.com. 2012011701 259200 21600 15724800 1209600

              – AL-Linux-AWS
              Jan 11 at 11:57













            • Is there any service like site-shied from Akami to hide the A record ?

              – AL-Linux-AWS
              Jan 11 at 11:59











            • akamai.com/uk/en/products/cloud-security/site-shield.jsp

              – AL-Linux-AWS
              Jan 11 at 12:00











            • Services such as this essentially proxy your traffic. But if you set up something like this, you would own the proxy to which the remote users connect, bringing you full circle back to hosting servers on IP addresses directly accessed by remote users.

              – Twisty Impersonator
              Jan 11 at 13:30
















            3














            If you intend to accept direct connections over the Internet at your public IP addresses, then you cannot hide them, else other computers on the Internet won't be able to communicate with the computers at those IP addresses.



            CNAME records don't hide IP addresses. They are used to create aliases for other DNS entries. When a DNS lookup encounters a CNAME record it causes the DNS resolution process to "start over" using the name returned by the CNAME record.



            For example, suppose you may have a CNAME record named alias.example.com pointing to the name server.example.com. When a user accesses alias.example.com, their DNS resolver will:




            1. Look up alias.example.com

            2. Encounter the CNAME record

            3. Start a new lookup for the name server.example.com

            4. Obtain the IP address of server.example.com


            In the end, the IP address of server.example.com must be revealed an order for communication to occur over the Internet.






            share|improve this answer


























            • How Akami is hiding A record "MacBook-Pro-4:~ Raj$ host akami.com akami.com mail is handled by 5 alt1.aspmx.l.google.com. akami.com mail is handled by 1 aspmx.l.google.com. akami.com mail is handled by 10 aspmx2.googlemail.com. akami.com mail is handled by 10 aspmx3.googlemail.com. akami.com mail is handled by 5 alt2.aspmx.l.google.com."

              – AL-Linux-AWS
              Jan 11 at 11:56













            • MacBook-Pro-4:~ raj$ dig akami.com ; <<>> DiG 9.10.6 <<>> akami.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 47181 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;akami.com. IN A ;; AUTHORITY SECTION: akami.com. 10800 IN SOA prod-unix-extdns04.akamai.com. hostmaster.akamai.com. 2012011701 259200 21600 15724800 1209600

              – AL-Linux-AWS
              Jan 11 at 11:57













            • Is there any service like site-shied from Akami to hide the A record ?

              – AL-Linux-AWS
              Jan 11 at 11:59











            • akamai.com/uk/en/products/cloud-security/site-shield.jsp

              – AL-Linux-AWS
              Jan 11 at 12:00











            • Services such as this essentially proxy your traffic. But if you set up something like this, you would own the proxy to which the remote users connect, bringing you full circle back to hosting servers on IP addresses directly accessed by remote users.

              – Twisty Impersonator
              Jan 11 at 13:30














            3












            3








            3







            If you intend to accept direct connections over the Internet at your public IP addresses, then you cannot hide them, else other computers on the Internet won't be able to communicate with the computers at those IP addresses.



            CNAME records don't hide IP addresses. They are used to create aliases for other DNS entries. When a DNS lookup encounters a CNAME record it causes the DNS resolution process to "start over" using the name returned by the CNAME record.



            For example, suppose you may have a CNAME record named alias.example.com pointing to the name server.example.com. When a user accesses alias.example.com, their DNS resolver will:




            1. Look up alias.example.com

            2. Encounter the CNAME record

            3. Start a new lookup for the name server.example.com

            4. Obtain the IP address of server.example.com


            In the end, the IP address of server.example.com must be revealed an order for communication to occur over the Internet.






            share|improve this answer















            If you intend to accept direct connections over the Internet at your public IP addresses, then you cannot hide them, else other computers on the Internet won't be able to communicate with the computers at those IP addresses.



            CNAME records don't hide IP addresses. They are used to create aliases for other DNS entries. When a DNS lookup encounters a CNAME record it causes the DNS resolution process to "start over" using the name returned by the CNAME record.



            For example, suppose you may have a CNAME record named alias.example.com pointing to the name server.example.com. When a user accesses alias.example.com, their DNS resolver will:




            1. Look up alias.example.com

            2. Encounter the CNAME record

            3. Start a new lookup for the name server.example.com

            4. Obtain the IP address of server.example.com


            In the end, the IP address of server.example.com must be revealed an order for communication to occur over the Internet.







            share|improve this answer














            share|improve this answer



            share|improve this answer








            edited Jan 12 at 12:45

























            answered Jan 11 at 11:28









            Twisty ImpersonatorTwisty Impersonator

            18.2k146597




            18.2k146597













            • How Akami is hiding A record "MacBook-Pro-4:~ Raj$ host akami.com akami.com mail is handled by 5 alt1.aspmx.l.google.com. akami.com mail is handled by 1 aspmx.l.google.com. akami.com mail is handled by 10 aspmx2.googlemail.com. akami.com mail is handled by 10 aspmx3.googlemail.com. akami.com mail is handled by 5 alt2.aspmx.l.google.com."

              – AL-Linux-AWS
              Jan 11 at 11:56













            • MacBook-Pro-4:~ raj$ dig akami.com ; <<>> DiG 9.10.6 <<>> akami.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 47181 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;akami.com. IN A ;; AUTHORITY SECTION: akami.com. 10800 IN SOA prod-unix-extdns04.akamai.com. hostmaster.akamai.com. 2012011701 259200 21600 15724800 1209600

              – AL-Linux-AWS
              Jan 11 at 11:57













            • Is there any service like site-shied from Akami to hide the A record ?

              – AL-Linux-AWS
              Jan 11 at 11:59











            • akamai.com/uk/en/products/cloud-security/site-shield.jsp

              – AL-Linux-AWS
              Jan 11 at 12:00











            • Services such as this essentially proxy your traffic. But if you set up something like this, you would own the proxy to which the remote users connect, bringing you full circle back to hosting servers on IP addresses directly accessed by remote users.

              – Twisty Impersonator
              Jan 11 at 13:30



















            • How Akami is hiding A record "MacBook-Pro-4:~ Raj$ host akami.com akami.com mail is handled by 5 alt1.aspmx.l.google.com. akami.com mail is handled by 1 aspmx.l.google.com. akami.com mail is handled by 10 aspmx2.googlemail.com. akami.com mail is handled by 10 aspmx3.googlemail.com. akami.com mail is handled by 5 alt2.aspmx.l.google.com."

              – AL-Linux-AWS
              Jan 11 at 11:56













            • MacBook-Pro-4:~ raj$ dig akami.com ; <<>> DiG 9.10.6 <<>> akami.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 47181 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;akami.com. IN A ;; AUTHORITY SECTION: akami.com. 10800 IN SOA prod-unix-extdns04.akamai.com. hostmaster.akamai.com. 2012011701 259200 21600 15724800 1209600

              – AL-Linux-AWS
              Jan 11 at 11:57













            • Is there any service like site-shied from Akami to hide the A record ?

              – AL-Linux-AWS
              Jan 11 at 11:59











            • akamai.com/uk/en/products/cloud-security/site-shield.jsp

              – AL-Linux-AWS
              Jan 11 at 12:00











            • Services such as this essentially proxy your traffic. But if you set up something like this, you would own the proxy to which the remote users connect, bringing you full circle back to hosting servers on IP addresses directly accessed by remote users.

              – Twisty Impersonator
              Jan 11 at 13:30

















            How Akami is hiding A record "MacBook-Pro-4:~ Raj$ host akami.com akami.com mail is handled by 5 alt1.aspmx.l.google.com. akami.com mail is handled by 1 aspmx.l.google.com. akami.com mail is handled by 10 aspmx2.googlemail.com. akami.com mail is handled by 10 aspmx3.googlemail.com. akami.com mail is handled by 5 alt2.aspmx.l.google.com."

            – AL-Linux-AWS
            Jan 11 at 11:56







            How Akami is hiding A record "MacBook-Pro-4:~ Raj$ host akami.com akami.com mail is handled by 5 alt1.aspmx.l.google.com. akami.com mail is handled by 1 aspmx.l.google.com. akami.com mail is handled by 10 aspmx2.googlemail.com. akami.com mail is handled by 10 aspmx3.googlemail.com. akami.com mail is handled by 5 alt2.aspmx.l.google.com."

            – AL-Linux-AWS
            Jan 11 at 11:56















            MacBook-Pro-4:~ raj$ dig akami.com ; <<>> DiG 9.10.6 <<>> akami.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 47181 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;akami.com. IN A ;; AUTHORITY SECTION: akami.com. 10800 IN SOA prod-unix-extdns04.akamai.com. hostmaster.akamai.com. 2012011701 259200 21600 15724800 1209600

            – AL-Linux-AWS
            Jan 11 at 11:57







            MacBook-Pro-4:~ raj$ dig akami.com ; <<>> DiG 9.10.6 <<>> akami.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 47181 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;akami.com. IN A ;; AUTHORITY SECTION: akami.com. 10800 IN SOA prod-unix-extdns04.akamai.com. hostmaster.akamai.com. 2012011701 259200 21600 15724800 1209600

            – AL-Linux-AWS
            Jan 11 at 11:57















            Is there any service like site-shied from Akami to hide the A record ?

            – AL-Linux-AWS
            Jan 11 at 11:59





            Is there any service like site-shied from Akami to hide the A record ?

            – AL-Linux-AWS
            Jan 11 at 11:59













            akamai.com/uk/en/products/cloud-security/site-shield.jsp

            – AL-Linux-AWS
            Jan 11 at 12:00





            akamai.com/uk/en/products/cloud-security/site-shield.jsp

            – AL-Linux-AWS
            Jan 11 at 12:00













            Services such as this essentially proxy your traffic. But if you set up something like this, you would own the proxy to which the remote users connect, bringing you full circle back to hosting servers on IP addresses directly accessed by remote users.

            – Twisty Impersonator
            Jan 11 at 13:30





            Services such as this essentially proxy your traffic. But if you set up something like this, you would own the proxy to which the remote users connect, bringing you full circle back to hosting servers on IP addresses directly accessed by remote users.

            – Twisty Impersonator
            Jan 11 at 13:30


















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