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Does a Web Application Firewall impact SEO?
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Our site recently got hacked and after hardening the site we installed a web application firewall.
My question is does a web application firewall negatively impact SEO and rankings? I.e. in terms of rankings, speed and crawl-ability?
seo firewall
asked Sep 6 at 8:49
user2381937
63
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user2381937 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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up vote
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Our site recently got hacked and after hardening the site we installed a web application firewall.
My question is does a web application firewall negatively impact SEO and rankings? I.e. in terms of rankings, speed and crawl-ability?
seo firewall
asked Sep 6 at 8:49
user2381937
63
New contributor
user2381937 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I assume you are using this to try to prevent cross site scripting attacks and SQL injection attacks? Which firewall did you choose and how did you configure it? Did you do any load testing or speed measurements before and after it was installed?
– Stephen Ostermiller♦
Sep 6 at 9:22
We chose Cloudbric with out-the-box settings. Unfortunately, we did not do a speed test on the site before it was installed - that would've been ideal. The main question is if a firewall could affect the SEO ranking in anyway?
– user2381937
Sep 6 at 10:33
I've posted an answer which addresses some issues the accepted answer doesn't. Essentially not having a firewall can affect SEO, whereas having one would have a negligible effect.
– Andy
Sep 6 at 13:37
add a comment |Â
up vote
0
down vote
favorite
up vote
0
down vote
favorite
Our site recently got hacked and after hardening the site we installed a web application firewall.
My question is does a web application firewall negatively impact SEO and rankings? I.e. in terms of rankings, speed and crawl-ability?
seo firewall
asked Sep 6 at 8:49
user2381937
63
New contributor
user2381937 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Our site recently got hacked and after hardening the site we installed a web application firewall.
My question is does a web application firewall negatively impact SEO and rankings? I.e. in terms of rankings, speed and crawl-ability?
seo firewall
asked Sep 6 at 8:49
user2381937
63
New contributor
user2381937 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited Sep 6 at 12:50
asked Sep 6 at 8:49
user2381937
63
New contributor
user2381937 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked Sep 6 at 8:49
user2381937
63
asked Sep 6 at 8:49
user2381937
63
63
New contributor
user2381937 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
user2381937 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
user2381937 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I assume you are using this to try to prevent cross site scripting attacks and SQL injection attacks? Which firewall did you choose and how did you configure it? Did you do any load testing or speed measurements before and after it was installed?
– Stephen Ostermiller♦
Sep 6 at 9:22
We chose Cloudbric with out-the-box settings. Unfortunately, we did not do a speed test on the site before it was installed - that would've been ideal. The main question is if a firewall could affect the SEO ranking in anyway?
– user2381937
Sep 6 at 10:33
I've posted an answer which addresses some issues the accepted answer doesn't. Essentially not having a firewall can affect SEO, whereas having one would have a negligible effect.
– Andy
Sep 6 at 13:37
add a comment |Â
I assume you are using this to try to prevent cross site scripting attacks and SQL injection attacks? Which firewall did you choose and how did you configure it? Did you do any load testing or speed measurements before and after it was installed?
– Stephen Ostermiller♦
Sep 6 at 9:22
We chose Cloudbric with out-the-box settings. Unfortunately, we did not do a speed test on the site before it was installed - that would've been ideal. The main question is if a firewall could affect the SEO ranking in anyway?
– user2381937
Sep 6 at 10:33
I've posted an answer which addresses some issues the accepted answer doesn't. Essentially not having a firewall can affect SEO, whereas having one would have a negligible effect.
– Andy
Sep 6 at 13:37
I assume you are using this to try to prevent cross site scripting attacks and SQL injection attacks? Which firewall did you choose and how did you configure it? Did you do any load testing or speed measurements before and after it was installed?
– Stephen Ostermiller♦
Sep 6 at 9:22
I assume you are using this to try to prevent cross site scripting attacks and SQL injection attacks? Which firewall did you choose and how did you configure it? Did you do any load testing or speed measurements before and after it was installed?
– Stephen Ostermiller♦
Sep 6 at 9:22
We chose Cloudbric with out-the-box settings. Unfortunately, we did not do a speed test on the site before it was installed - that would've been ideal. The main question is if a firewall could affect the SEO ranking in anyway?
– user2381937
Sep 6 at 10:33
We chose Cloudbric with out-the-box settings. Unfortunately, we did not do a speed test on the site before it was installed - that would've been ideal. The main question is if a firewall could affect the SEO ranking in anyway?
– user2381937
Sep 6 at 10:33
I've posted an answer which addresses some issues the accepted answer doesn't. Essentially not having a firewall can affect SEO, whereas having one would have a negligible effect.
– Andy
Sep 6 at 13:37
I've posted an answer which addresses some issues the accepted answer doesn't. Essentially not having a firewall can affect SEO, whereas having one would have a negligible effect.
– Andy
Sep 6 at 13:37
add a comment |Â
3 Answers
3
active
oldest
votes
up vote
0
down vote
accepted
Not having one can affect SEO, and here's why:
If your site were to be hacked or compromised - it's possible that this would affect your search engine position. A site being offline for any period of time (due to a compromise/hacking attempt) will result in search engines lowering the ranking due to it being inaccessible. Google can also detect sites infected with malware and these are heavily penalised in terms of SEO - to the point users are warned not to access them.
Most search engines base their rankings on various factors, which includes the security of a website. For example, sites which are not served over HTTPS** were historically given a lower ranking, especially if they were deemed to be handling customer information - e.g. ecommerce.
Therefore, not having a firewall can negatively affect your SEO.
From a technical perspective there are only 2 things which having one might affect it:
Blocking search engine crawlers. No application firewall (hardware or software) does this by default.
If the incoming http requests were processed less quickly due to the firewall rules, this may incur a penalty since search engines give preferences to sites which load quickly. However, no firewall in a default configuration - or with average rules being applied - would make any significant difference in terms of page load time.
** the HTTP vs HTTPS issue has nothing to do with a firewall but illustrates other aspects of web security that search engines take into account
TL/DR: if your site is infected with malware and/or offline for extended periods, that will definitely have a negative affect on your search engine position. Therefore not using things to prevent that (like a firewall) can have a negative impact.
Further reading: https://medium.com/@oliversild/positive-and-negative-impact-of-security-to-your-seo-ranking-77ef5722a4e0
answered Sep 6 at 13:31
Andy
20228
1
This is the insight I was looking for. Thank you
– user2381937
yesterday
add a comment |Â
up vote
3
down vote
Hard to tell without more information. However, the only thing that could impact SEO is if your firewall is messing with the following points:
- Load time of the site.
- Prevent searchers bots to access and index the site (rate limit, ip filters, user agent filters, geo lockdown, security rules, etc).
- Real-time changes of URLs/content.
As long as your source code/rendered page is accessible by searchers you should not have any problems.
answered Sep 6 at 9:34
Emirodgar
1,83012
This is the wrong answer. It doesn't take into account things like a site being hacked or compromised with malware (which a firewall can help prevent). It's only addressing it from the perspective of crawlers requesting content on the site, which isn't adversely affected by a firewall.
– Andy
Sep 6 at 13:44
That being true, it would be an uncompleted answer, but not wrong. Nevertheless, the question is: "does a web application firewall negatively impact SEO and rankings?". He is not asking about what could go wrong without a firewall.
– Emirodgar
Sep 6 at 14:10
add a comment |Â
up vote
0
down vote
It most probably won't affect the SEO rating. That is, unless you block Google out.
answered Sep 6 at 12:04
Maschter
1
New contributor
Maschter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Hi there, this question has already an accepted answer, that means the OP found a solution. You can filter the unanswered questions to help other people :) let me know if you have doubts about this platform.
– Emirodgar
Sep 6 at 12:33
A one line answer is not high quality. Your answer would be better if you supported it with anecdotes from your personal experience or with links to references. Please edit your answer to add to it.
– Stephen Ostermiller♦
Sep 6 at 13:27
add a comment |Â
3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
0
down vote
accepted
Not having one can affect SEO, and here's why:
If your site were to be hacked or compromised - it's possible that this would affect your search engine position. A site being offline for any period of time (due to a compromise/hacking attempt) will result in search engines lowering the ranking due to it being inaccessible. Google can also detect sites infected with malware and these are heavily penalised in terms of SEO - to the point users are warned not to access them.
Most search engines base their rankings on various factors, which includes the security of a website. For example, sites which are not served over HTTPS** were historically given a lower ranking, especially if they were deemed to be handling customer information - e.g. ecommerce.
Therefore, not having a firewall can negatively affect your SEO.
From a technical perspective there are only 2 things which having one might affect it:
Blocking search engine crawlers. No application firewall (hardware or software) does this by default.
If the incoming http requests were processed less quickly due to the firewall rules, this may incur a penalty since search engines give preferences to sites which load quickly. However, no firewall in a default configuration - or with average rules being applied - would make any significant difference in terms of page load time.
** the HTTP vs HTTPS issue has nothing to do with a firewall but illustrates other aspects of web security that search engines take into account
TL/DR: if your site is infected with malware and/or offline for extended periods, that will definitely have a negative affect on your search engine position. Therefore not using things to prevent that (like a firewall) can have a negative impact.
Further reading: https://medium.com/@oliversild/positive-and-negative-impact-of-security-to-your-seo-ranking-77ef5722a4e0
answered Sep 6 at 13:31
Andy
20228
1
This is the insight I was looking for. Thank you
– user2381937
yesterday
add a comment |Â
up vote
0
down vote
accepted
Not having one can affect SEO, and here's why:
If your site were to be hacked or compromised - it's possible that this would affect your search engine position. A site being offline for any period of time (due to a compromise/hacking attempt) will result in search engines lowering the ranking due to it being inaccessible. Google can also detect sites infected with malware and these are heavily penalised in terms of SEO - to the point users are warned not to access them.
Most search engines base their rankings on various factors, which includes the security of a website. For example, sites which are not served over HTTPS** were historically given a lower ranking, especially if they were deemed to be handling customer information - e.g. ecommerce.
Therefore, not having a firewall can negatively affect your SEO.
From a technical perspective there are only 2 things which having one might affect it:
Blocking search engine crawlers. No application firewall (hardware or software) does this by default.
If the incoming http requests were processed less quickly due to the firewall rules, this may incur a penalty since search engines give preferences to sites which load quickly. However, no firewall in a default configuration - or with average rules being applied - would make any significant difference in terms of page load time.
** the HTTP vs HTTPS issue has nothing to do with a firewall but illustrates other aspects of web security that search engines take into account
TL/DR: if your site is infected with malware and/or offline for extended periods, that will definitely have a negative affect on your search engine position. Therefore not using things to prevent that (like a firewall) can have a negative impact.
Further reading: https://medium.com/@oliversild/positive-and-negative-impact-of-security-to-your-seo-ranking-77ef5722a4e0
answered Sep 6 at 13:31
Andy
20228
1
This is the insight I was looking for. Thank you
– user2381937
yesterday
add a comment |Â
up vote
0
down vote
accepted
up vote
0
down vote
accepted
Not having one can affect SEO, and here's why:
If your site were to be hacked or compromised - it's possible that this would affect your search engine position. A site being offline for any period of time (due to a compromise/hacking attempt) will result in search engines lowering the ranking due to it being inaccessible. Google can also detect sites infected with malware and these are heavily penalised in terms of SEO - to the point users are warned not to access them.
Most search engines base their rankings on various factors, which includes the security of a website. For example, sites which are not served over HTTPS** were historically given a lower ranking, especially if they were deemed to be handling customer information - e.g. ecommerce.
Therefore, not having a firewall can negatively affect your SEO.
From a technical perspective there are only 2 things which having one might affect it:
Blocking search engine crawlers. No application firewall (hardware or software) does this by default.
If the incoming http requests were processed less quickly due to the firewall rules, this may incur a penalty since search engines give preferences to sites which load quickly. However, no firewall in a default configuration - or with average rules being applied - would make any significant difference in terms of page load time.
** the HTTP vs HTTPS issue has nothing to do with a firewall but illustrates other aspects of web security that search engines take into account
TL/DR: if your site is infected with malware and/or offline for extended periods, that will definitely have a negative affect on your search engine position. Therefore not using things to prevent that (like a firewall) can have a negative impact.
Further reading: https://medium.com/@oliversild/positive-and-negative-impact-of-security-to-your-seo-ranking-77ef5722a4e0
answered Sep 6 at 13:31
Andy
20228
Not having one can affect SEO, and here's why:
If your site were to be hacked or compromised - it's possible that this would affect your search engine position. A site being offline for any period of time (due to a compromise/hacking attempt) will result in search engines lowering the ranking due to it being inaccessible. Google can also detect sites infected with malware and these are heavily penalised in terms of SEO - to the point users are warned not to access them.
Most search engines base their rankings on various factors, which includes the security of a website. For example, sites which are not served over HTTPS** were historically given a lower ranking, especially if they were deemed to be handling customer information - e.g. ecommerce.
Therefore, not having a firewall can negatively affect your SEO.
From a technical perspective there are only 2 things which having one might affect it:
Blocking search engine crawlers. No application firewall (hardware or software) does this by default.
If the incoming http requests were processed less quickly due to the firewall rules, this may incur a penalty since search engines give preferences to sites which load quickly. However, no firewall in a default configuration - or with average rules being applied - would make any significant difference in terms of page load time.
** the HTTP vs HTTPS issue has nothing to do with a firewall but illustrates other aspects of web security that search engines take into account
TL/DR: if your site is infected with malware and/or offline for extended periods, that will definitely have a negative affect on your search engine position. Therefore not using things to prevent that (like a firewall) can have a negative impact.
Further reading: https://medium.com/@oliversild/positive-and-negative-impact-of-security-to-your-seo-ranking-77ef5722a4e0
answered Sep 6 at 13:31
Andy
20228
edited yesterday
answered Sep 6 at 13:31
Andy
20228
answered Sep 6 at 13:31
Andy
20228
answered Sep 6 at 13:31
Andy
20228
20228
1
This is the insight I was looking for. Thank you
– user2381937
yesterday
add a comment |Â
1
This is the insight I was looking for. Thank you
– user2381937
yesterday
1
1
This is the insight I was looking for. Thank you
– user2381937
yesterday
This is the insight I was looking for. Thank you
– user2381937
yesterday
add a comment |Â
up vote
3
down vote
Hard to tell without more information. However, the only thing that could impact SEO is if your firewall is messing with the following points:
- Load time of the site.
- Prevent searchers bots to access and index the site (rate limit, ip filters, user agent filters, geo lockdown, security rules, etc).
- Real-time changes of URLs/content.
As long as your source code/rendered page is accessible by searchers you should not have any problems.
answered Sep 6 at 9:34
Emirodgar
1,83012
This is the wrong answer. It doesn't take into account things like a site being hacked or compromised with malware (which a firewall can help prevent). It's only addressing it from the perspective of crawlers requesting content on the site, which isn't adversely affected by a firewall.
– Andy
Sep 6 at 13:44
That being true, it would be an uncompleted answer, but not wrong. Nevertheless, the question is: "does a web application firewall negatively impact SEO and rankings?". He is not asking about what could go wrong without a firewall.
– Emirodgar
Sep 6 at 14:10
add a comment |Â
up vote
3
down vote
Hard to tell without more information. However, the only thing that could impact SEO is if your firewall is messing with the following points:
- Load time of the site.
- Prevent searchers bots to access and index the site (rate limit, ip filters, user agent filters, geo lockdown, security rules, etc).
- Real-time changes of URLs/content.
As long as your source code/rendered page is accessible by searchers you should not have any problems.
answered Sep 6 at 9:34
Emirodgar
1,83012
This is the wrong answer. It doesn't take into account things like a site being hacked or compromised with malware (which a firewall can help prevent). It's only addressing it from the perspective of crawlers requesting content on the site, which isn't adversely affected by a firewall.
– Andy
Sep 6 at 13:44
That being true, it would be an uncompleted answer, but not wrong. Nevertheless, the question is: "does a web application firewall negatively impact SEO and rankings?". He is not asking about what could go wrong without a firewall.
– Emirodgar
Sep 6 at 14:10
add a comment |Â
up vote
3
down vote
up vote
3
down vote
Hard to tell without more information. However, the only thing that could impact SEO is if your firewall is messing with the following points:
- Load time of the site.
- Prevent searchers bots to access and index the site (rate limit, ip filters, user agent filters, geo lockdown, security rules, etc).
- Real-time changes of URLs/content.
As long as your source code/rendered page is accessible by searchers you should not have any problems.
answered Sep 6 at 9:34
Emirodgar
1,83012
Hard to tell without more information. However, the only thing that could impact SEO is if your firewall is messing with the following points:
- Load time of the site.
- Prevent searchers bots to access and index the site (rate limit, ip filters, user agent filters, geo lockdown, security rules, etc).
- Real-time changes of URLs/content.
As long as your source code/rendered page is accessible by searchers you should not have any problems.
answered Sep 6 at 9:34
Emirodgar
1,83012
answered Sep 6 at 9:34
Emirodgar
1,83012
answered Sep 6 at 9:34
Emirodgar
1,83012
answered Sep 6 at 9:34
Emirodgar
1,83012
1,83012
This is the wrong answer. It doesn't take into account things like a site being hacked or compromised with malware (which a firewall can help prevent). It's only addressing it from the perspective of crawlers requesting content on the site, which isn't adversely affected by a firewall.
– Andy
Sep 6 at 13:44
That being true, it would be an uncompleted answer, but not wrong. Nevertheless, the question is: "does a web application firewall negatively impact SEO and rankings?". He is not asking about what could go wrong without a firewall.
– Emirodgar
Sep 6 at 14:10
add a comment |Â
This is the wrong answer. It doesn't take into account things like a site being hacked or compromised with malware (which a firewall can help prevent). It's only addressing it from the perspective of crawlers requesting content on the site, which isn't adversely affected by a firewall.
– Andy
Sep 6 at 13:44
That being true, it would be an uncompleted answer, but not wrong. Nevertheless, the question is: "does a web application firewall negatively impact SEO and rankings?". He is not asking about what could go wrong without a firewall.
– Emirodgar
Sep 6 at 14:10
This is the wrong answer. It doesn't take into account things like a site being hacked or compromised with malware (which a firewall can help prevent). It's only addressing it from the perspective of crawlers requesting content on the site, which isn't adversely affected by a firewall.
– Andy
Sep 6 at 13:44
This is the wrong answer. It doesn't take into account things like a site being hacked or compromised with malware (which a firewall can help prevent). It's only addressing it from the perspective of crawlers requesting content on the site, which isn't adversely affected by a firewall.
– Andy
Sep 6 at 13:44
That being true, it would be an uncompleted answer, but not wrong. Nevertheless, the question is: "does a web application firewall negatively impact SEO and rankings?". He is not asking about what could go wrong without a firewall.
– Emirodgar
Sep 6 at 14:10
That being true, it would be an uncompleted answer, but not wrong. Nevertheless, the question is: "does a web application firewall negatively impact SEO and rankings?". He is not asking about what could go wrong without a firewall.
– Emirodgar
Sep 6 at 14:10
add a comment |Â
up vote
0
down vote
It most probably won't affect the SEO rating. That is, unless you block Google out.
answered Sep 6 at 12:04
Maschter
1
New contributor
Maschter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Hi there, this question has already an accepted answer, that means the OP found a solution. You can filter the unanswered questions to help other people :) let me know if you have doubts about this platform.
– Emirodgar
Sep 6 at 12:33
A one line answer is not high quality. Your answer would be better if you supported it with anecdotes from your personal experience or with links to references. Please edit your answer to add to it.
– Stephen Ostermiller♦
Sep 6 at 13:27
add a comment |Â
up vote
0
down vote
It most probably won't affect the SEO rating. That is, unless you block Google out.
answered Sep 6 at 12:04
Maschter
1
New contributor
Maschter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Hi there, this question has already an accepted answer, that means the OP found a solution. You can filter the unanswered questions to help other people :) let me know if you have doubts about this platform.
– Emirodgar
Sep 6 at 12:33
A one line answer is not high quality. Your answer would be better if you supported it with anecdotes from your personal experience or with links to references. Please edit your answer to add to it.
– Stephen Ostermiller♦
Sep 6 at 13:27
add a comment |Â
up vote
0
down vote
up vote
0
down vote
It most probably won't affect the SEO rating. That is, unless you block Google out.
answered Sep 6 at 12:04
Maschter
1
New contributor
Maschter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
It most probably won't affect the SEO rating. That is, unless you block Google out.
answered Sep 6 at 12:04
Maschter
1
New contributor
Maschter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered Sep 6 at 12:04
Maschter
1
New contributor
Maschter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered Sep 6 at 12:04
Maschter
1
answered Sep 6 at 12:04
Maschter
1
1
New contributor
Maschter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Maschter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Maschter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Hi there, this question has already an accepted answer, that means the OP found a solution. You can filter the unanswered questions to help other people :) let me know if you have doubts about this platform.
– Emirodgar
Sep 6 at 12:33
A one line answer is not high quality. Your answer would be better if you supported it with anecdotes from your personal experience or with links to references. Please edit your answer to add to it.
– Stephen Ostermiller♦
Sep 6 at 13:27
add a comment |Â
Hi there, this question has already an accepted answer, that means the OP found a solution. You can filter the unanswered questions to help other people :) let me know if you have doubts about this platform.
– Emirodgar
Sep 6 at 12:33
A one line answer is not high quality. Your answer would be better if you supported it with anecdotes from your personal experience or with links to references. Please edit your answer to add to it.
– Stephen Ostermiller♦
Sep 6 at 13:27
Hi there, this question has already an accepted answer, that means the OP found a solution. You can filter the unanswered questions to help other people :) let me know if you have doubts about this platform.
– Emirodgar
Sep 6 at 12:33
Hi there, this question has already an accepted answer, that means the OP found a solution. You can filter the unanswered questions to help other people :) let me know if you have doubts about this platform.
– Emirodgar
Sep 6 at 12:33
A one line answer is not high quality. Your answer would be better if you supported it with anecdotes from your personal experience or with links to references. Please edit your answer to add to it.
– Stephen Ostermiller♦
Sep 6 at 13:27
A one line answer is not high quality. Your answer would be better if you supported it with anecdotes from your personal experience or with links to references. Please edit your answer to add to it.
– Stephen Ostermiller♦
Sep 6 at 13:27
add a comment |Â
user2381937 is a new contributor. Be nice, and check out our Code of Conduct.
user2381937 is a new contributor. Be nice, and check out our Code of Conduct.
user2381937 is a new contributor. Be nice, and check out our Code of Conduct.
user2381937 is a new contributor. Be nice, and check out our Code of Conduct.
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I assume you are using this to try to prevent cross site scripting attacks and SQL injection attacks? Which firewall did you choose and how did you configure it? Did you do any load testing or speed measurements before and after it was installed?
– Stephen Ostermiller♦
Sep 6 at 9:22
We chose Cloudbric with out-the-box settings. Unfortunately, we did not do a speed test on the site before it was installed - that would've been ideal. The main question is if a firewall could affect the SEO ranking in anyway?
– user2381937
Sep 6 at 10:33
I've posted an answer which addresses some issues the accepted answer doesn't. Essentially not having a firewall can affect SEO, whereas having one would have a negligible effect.
– Andy
Sep 6 at 13:37