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2142
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2
Helpful
6
Replies

Blocked FTP connection

collrbbrt
Level 3
Level 3

How can I check if Access Point is blocking FTP Connection. 

2 Accepted Solutions

Accepted Solutions

Mark Elsen
Hall of Fame
Hall of Fame

 

          - APs essentially providing layer1/2 (wireless) connectivity will not block FTP connections ,

 M.



-- ' Listen to the wind, it talks  
          Listen to the silence, it speaks
             Listen to your heart, it knows
Ganado Mucho (1809 to 1893 ) Navajo Indian

View solution in original post

Rich R
VIP
VIP

Marce is right - WiFi is fundamentally a layer 2 technology - the clue is in the name: Wireless LAN.

But many WiFi APs/devices these days also have higher layer technologies built into them like ACLs or content filtering and that kind of thing which could block FTP but that really depends on what equipment you're using and what features you have enabled on that equipment?

For example we've had 2 major customers complain of "WiFi problems" on Meraki networks which were proved to be caused by their indiscriminate and overzealous use of Meraki's content filtering and layer 7 filter features which were dropping their WiFi client traffic.

So what model of access point are you using?  Autonomous or lightweight (controller based)? What version of software?  How is it configured?  What other devices does the client traffic pass through?

------------------------------
Please click Helpful if this post helped you and Accept as Solution if this answered your query.
------------------------------
TAC recommended codes for AireOS WLC's   and   TAC recommended codes for 9800 WLC's
Best Practices for AireOS WLC's,   Best Practices for 9800 WLC's   and   Cisco Wireless compatibility matrix
Check your 9800 WLC config with Wireless Config Analyzer using "show tech wireless" output or "config paging disable" then "show run-config" output on AireOS and use Wireless Debug Analyzer to analyze your WLC client debugs
Field Notice: FN63942 APs and WLCs Fail to Create CAPWAP Connections Due to Certificate Expiration
Field Notice: FN72424 Later Versions of WiFi 6 APs Fail to Join WLC - Software Upgrade Required
Field Notice: FN72524 IOS APs stuck in downloading state after 4 Dec 2022 due to Certificate Expired
- Fixed in 8.10.196.0, latest 9800 releases, 8.5.182.12 (8.5.182.13 for 3504) and 8.5.182.109 (IRCM, 8.5.182.111 for 3504)
Field Notice: FN70479 AP Fails to Join or Joins with 1 Radio due to Country Mismatch, RMA needed
Field Notice: FN74383 APs Running 17.12.4/5/6/6a May Run Out of Flash Space Preventing Upgrades
How to avoid boot loop due to corrupted image on Wave 2 and Catalyst 11ax Access Points (CSCvx32806)
Field Notice: FN74035 - Wave2 APs DFS May Not Detect Radar After Channel Availability Check Time
Leo's list of bugs affecting 2800/3800/4800/1560 APs
Default AP console baud rate from 17.12.x is 115200 - introduced by CSCwe88390
AP supported channel lookup: https://apchannels.cisco.com/

View solution in original post

6 Replies 6

Mark Elsen
Hall of Fame
Hall of Fame

 

          - APs essentially providing layer1/2 (wireless) connectivity will not block FTP connections ,

 M.



-- ' Listen to the wind, it talks  
          Listen to the silence, it speaks
             Listen to your heart, it knows
Ganado Mucho (1809 to 1893 ) Navajo Indian

Rich R
VIP
VIP

Marce is right - WiFi is fundamentally a layer 2 technology - the clue is in the name: Wireless LAN.

But many WiFi APs/devices these days also have higher layer technologies built into them like ACLs or content filtering and that kind of thing which could block FTP but that really depends on what equipment you're using and what features you have enabled on that equipment?

For example we've had 2 major customers complain of "WiFi problems" on Meraki networks which were proved to be caused by their indiscriminate and overzealous use of Meraki's content filtering and layer 7 filter features which were dropping their WiFi client traffic.

So what model of access point are you using?  Autonomous or lightweight (controller based)? What version of software?  How is it configured?  What other devices does the client traffic pass through?

------------------------------
Please click Helpful if this post helped you and Accept as Solution if this answered your query.
------------------------------
TAC recommended codes for AireOS WLC's   and   TAC recommended codes for 9800 WLC's
Best Practices for AireOS WLC's,   Best Practices for 9800 WLC's   and   Cisco Wireless compatibility matrix
Check your 9800 WLC config with Wireless Config Analyzer using "show tech wireless" output or "config paging disable" then "show run-config" output on AireOS and use Wireless Debug Analyzer to analyze your WLC client debugs
Field Notice: FN63942 APs and WLCs Fail to Create CAPWAP Connections Due to Certificate Expiration
Field Notice: FN72424 Later Versions of WiFi 6 APs Fail to Join WLC - Software Upgrade Required
Field Notice: FN72524 IOS APs stuck in downloading state after 4 Dec 2022 due to Certificate Expired
- Fixed in 8.10.196.0, latest 9800 releases, 8.5.182.12 (8.5.182.13 for 3504) and 8.5.182.109 (IRCM, 8.5.182.111 for 3504)
Field Notice: FN70479 AP Fails to Join or Joins with 1 Radio due to Country Mismatch, RMA needed
Field Notice: FN74383 APs Running 17.12.4/5/6/6a May Run Out of Flash Space Preventing Upgrades
How to avoid boot loop due to corrupted image on Wave 2 and Catalyst 11ax Access Points (CSCvx32806)
Field Notice: FN74035 - Wave2 APs DFS May Not Detect Radar After Channel Availability Check Time
Leo's list of bugs affecting 2800/3800/4800/1560 APs
Default AP console baud rate from 17.12.x is 115200 - introduced by CSCwe88390
AP supported channel lookup: https://apchannels.cisco.com/

collrbbrt
Level 3
Level 3

Thank you guys, you were absolutely right. The AP's were not the issue.

What was the problem?

------------------------------
Please click Helpful if this post helped you and Accept as Solution if this answered your query.
------------------------------
TAC recommended codes for AireOS WLC's   and   TAC recommended codes for 9800 WLC's
Best Practices for AireOS WLC's,   Best Practices for 9800 WLC's   and   Cisco Wireless compatibility matrix
Check your 9800 WLC config with Wireless Config Analyzer using "show tech wireless" output or "config paging disable" then "show run-config" output on AireOS and use Wireless Debug Analyzer to analyze your WLC client debugs
Field Notice: FN63942 APs and WLCs Fail to Create CAPWAP Connections Due to Certificate Expiration
Field Notice: FN72424 Later Versions of WiFi 6 APs Fail to Join WLC - Software Upgrade Required
Field Notice: FN72524 IOS APs stuck in downloading state after 4 Dec 2022 due to Certificate Expired
- Fixed in 8.10.196.0, latest 9800 releases, 8.5.182.12 (8.5.182.13 for 3504) and 8.5.182.109 (IRCM, 8.5.182.111 for 3504)
Field Notice: FN70479 AP Fails to Join or Joins with 1 Radio due to Country Mismatch, RMA needed
Field Notice: FN74383 APs Running 17.12.4/5/6/6a May Run Out of Flash Space Preventing Upgrades
How to avoid boot loop due to corrupted image on Wave 2 and Catalyst 11ax Access Points (CSCvx32806)
Field Notice: FN74035 - Wave2 APs DFS May Not Detect Radar After Channel Availability Check Time
Leo's list of bugs affecting 2800/3800/4800/1560 APs
Default AP console baud rate from 17.12.x is 115200 - introduced by CSCwe88390
AP supported channel lookup: https://apchannels.cisco.com/

collrbbrt
Level 3
Level 3

The problem was oracle application on the client device.

> The problem was oracle application on the client device.
<smile>

------------------------------
Please click Helpful if this post helped you and Accept as Solution if this answered your query.
------------------------------
TAC recommended codes for AireOS WLC's   and   TAC recommended codes for 9800 WLC's
Best Practices for AireOS WLC's,   Best Practices for 9800 WLC's   and   Cisco Wireless compatibility matrix
Check your 9800 WLC config with Wireless Config Analyzer using "show tech wireless" output or "config paging disable" then "show run-config" output on AireOS and use Wireless Debug Analyzer to analyze your WLC client debugs
Field Notice: FN63942 APs and WLCs Fail to Create CAPWAP Connections Due to Certificate Expiration
Field Notice: FN72424 Later Versions of WiFi 6 APs Fail to Join WLC - Software Upgrade Required
Field Notice: FN72524 IOS APs stuck in downloading state after 4 Dec 2022 due to Certificate Expired
- Fixed in 8.10.196.0, latest 9800 releases, 8.5.182.12 (8.5.182.13 for 3504) and 8.5.182.109 (IRCM, 8.5.182.111 for 3504)
Field Notice: FN70479 AP Fails to Join or Joins with 1 Radio due to Country Mismatch, RMA needed
Field Notice: FN74383 APs Running 17.12.4/5/6/6a May Run Out of Flash Space Preventing Upgrades
How to avoid boot loop due to corrupted image on Wave 2 and Catalyst 11ax Access Points (CSCvx32806)
Field Notice: FN74035 - Wave2 APs DFS May Not Detect Radar After Channel Availability Check Time
Leo's list of bugs affecting 2800/3800/4800/1560 APs
Default AP console baud rate from 17.12.x is 115200 - introduced by CSCwe88390
AP supported channel lookup: https://apchannels.cisco.com/
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