Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

dechir_21483's avatar
dechir_21483
Icon for Nimbostratus rankNimbostratus
Jul 12, 2012

problem with FTP access on BIG IP V11.2.0 HF1

Hi,       we have upgrade our 2 BIG IP on active/standby to version 11.2 HF1 and we met a problem with FTP access to our servers(vs ftp on port 21 and pool with members on ports 21), Ho...
security
nitass's avatar
nitass
Icon for Employee rankEmployee
Jul 12, 2012
this is my testing. 

root@(ve11a)(cfg-sync Changes Pending)(Active)(/Common)(tmos) show sys version

Sys::Version
Main Package
  Product  BIG-IP
  Version  11.2.0
  Build    2451.0
  Edition  Hotfix HF1
  Date     Tue Jun  5 23:45:09 PDT 2012

Hotfix List
ID387964  ID387843

root@(ve11a)(cfg-sync Changes Pending)(Active)(/Common)(tmos) list ltm virtual ftpvs
ltm virtual ftpvs {
    destination 172.28.19.252:21
    ip-protocol tcp
    mask 255.255.255.255
    pool ftppool
    profiles {
        ftp { }
        tcp { }
    }
    snat automap
    vlans-disabled
}
root@(ve11a)(cfg-sync Changes Pending)(Active)(/Common)(tmos) list ltm pool ftppool
ltm pool ftppool {
    members {
        200.200.200.101:21 {
            address 200.200.200.101
        }
    }
}

 on client

[root@centos251 ~] netstat -tan
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address               Foreign Address             State
tcp        0      0 172.28.19.251:33751         172.28.19.252:20            ESTABLISHED
tcp        0      0 172.28.19.251:57367         172.28.19.252:21            ESTABLISHED