Passive FTP using FTP profile
Hi Community, I have an F5 Big-IP 16.0.1.1 running on AWS with a FTP server behind running vsftpd. The idea is balance passive ftp publically. So, clients should hit public IP of the F5 for passive ftp. This scenario is running perfectly without an FTP profile, just a tcp profile (all ports) and the option pasv_address on the ftp server pointing to the public IP address of the F5. But I need to have this working with the FTP profile in order to implement extra security for FTP on the F5. I've tried to implement FTP passive load balancing using official documentations like (https://techdocs.f5.com/en-us/bigip-15-0-0/big-ip-local-traffic-manager-implementations/load-balancing-passive-mode-ftp-traffic.html ) , but no matter what combination or configuration is implemented on the F5 & the ftp server, if I have the ftp profile the message ("passive mode refused") is always received after request PASV and only works if I use this for internal passive ftp, meaning that I not configure a "pasv_address" on the ftp server, and the client that request the connection is in the same Lan than the F5 & ftp server, resolving everything internally. As a said, i've tried a lot of combinations and settings on the F5 and ftp servers, but nothing works. Could someone give me a little of guidance here? Thanks in advance.
ARP problem with F5
Hi all, we have deployed BIG IP 13.1.0 in our customer and everything is working fine exept two things: The F5 has virtual server in network (let's call this network X) , which acts as forwarding proxy. The problem is that, communication between hosts in network X is very strange. When we ping from some host A to another host B the ping is successful, but the arp table on host A says that MAC address on host B is the F5 ?? F5 only has some address in this network, that's all. The second problem is that FTP is not working. When clients wants to reach some ftp severs outside the organization is not working. We have virtual servers for ftp, but still we face this problem.. What could be the problem ?
Passing client IP's for FTP
Our FTP server(behind our f5) has an auto ban feature that is blocking the self ip address of F5 after multiple invalid logins. This in turn blocks all FTP traffic. I have use x-forwarder-for in the past but I cant seem to find the equivalent for FTP. Our workaround is to not auto ban IP addresses but this is a security risk. My solution is to move from Automap/SNAT to None (Routed Mode) and make the F5 the default gateway of the SFTP server (This would pass the real client IP at Layer 3). I seem to have a hit a roadblock on how to exactly do that. Current Config EXT listener (F5 virtual server) 10.10.10.181 > Pool Member (ftp server) 192.168.66.3 Self IP of F5 192.168.1.3 How would I specifically configure the Virtual Forwarding (IP) VS so it sends traffic destined for 10.10.10.181 to 192.168.66.3 while passing the real IP address? Do I need to create a static route on my router since the F5 and server are on different VLANs. When I set the DG to the self IP of F5 all traffic dies to that server (as expected). Any help is appreciated!
FTP Proxy , user based forwarding with iRule
Im looking into using a VS as an FTP Proxy towards my backend webserver. Currently i already works for one webserver behind the VS. Im now trying to write an iRule to forward traffic to the right server based on the username the ftp-connection is initiated with. Secondly i need to rewrite the username and remove the web-paramater Example: USER1 connects to with following credential USER1@WEB1 @WEB1 is removed from the credential and forwarded towards pool WEB1 Anybody any ideas how to do this last part ?
FTp proxy via iRule
Hello, I'm trying to do an anonymous ftp connection through an F5 irule. My logs of the irule look like this: Rule /Common/iRule_ftp_proxy <CLIENT_ACCEPTED>: client FTP accepted Rule /Common/iRule_ftp_proxy <CLIENT_DATA>: client payload - USER anonymous@193.190.198.27 Rule /Common/iRule_ftp_proxy <CLIENT_DATA>: sitename:193.190.198.27 - cmd:USER - uid:anonymous Rule /Common/iRule_ftp_proxy <CLIENT_DATA>: address 193.190.198.27 port 21 Rule /Common/iRule_ftp_proxy <SERVER_CONNECTED>: connected to server Rule /Common/iRule_ftp_proxy <SERVER_DATA>: server payload 220-Welcome to the Belnet public FTP server ftp.belnet.be !This server is located in Brussels, Belgium and operated by Belnet, the BelgianEducation and Research Network. If you have any problem, question or mirrorrequest, please send them to ftpmaint@belnet.be.This archive is available through the following means:RSYNC rsync://rsync.belnet.be (IPv4)HTTP http://ftp.belnet.be (IPv4 + IPv6)FTP ftp://ftp.belnet.be (IPv4 + IPv6) Rule /Common/iRule_ftp_proxy <SERVER_DATA>: server found 220 ok Rule /Common/iRule_ftp_proxy <SERVER_DATA>: server payloadNote: opening too many parallel connections to this host is considered an abuse.All access is logged.Currently used storage capacity : 34T / 100T on /ftp220 193.190.198.27 FTP server ready Rule /Common/iRule_ftp_proxy <SERVER_DATA>: server payload 331 Anonymous login ok, send your complete email address as your password When I check with a wireshark capture on my client; the '331 Anonymous login ok, send your complete email address as your password' never reaches the client. Without the proxy, it does reach the client and filezilla knows how to deal with it. This is my server_data in the irule; when SERVER_DATA { if { $static::debug } { log local0. "server payload [TCP::payload]" } if { [TCP::payload] starts_with "220" }{ if { $static::debug } { log local0. "server found 220 ok" } TCP::respond "USER $uid\r\n" TCP::payload replace 0 [TCP::payload length] "" } TCP::release TCP::collect } I also tried modifying the rule like this: when SERVER_DATA { if { $static::debug } { log local0. "server payload [TCP::payload]" } if { [TCP::payload] starts_with "220" }{ if { $static::debug } { log local0. "server found 220 ok" } TCP::respond "USER $uid\r\n" TCP::payload replace 0 [TCP::payload length] "" } if { [TCP::payload] starts_with "331" }{ TCP::respond "PASS $uid@example.com\r\n" TCP::payload replace 0 [TCP::payload length] "" } TCP::release TCP::collect } This get's me one step further, but I'm still not able to connect. When I check with a wireshark capture on my client; the '331 Anonymous login ok, send your complete email address as your password' never reaches the client. Without the proxy, it does reach the client and filezilla knows how to deal with it. Rule /Common/iRule_ftp_proxy <SERVER_DATA>: server payload 230 Anonymous access granted, restrictions apply Why is the '331 server_data' not being forwarded to my client so it can respond to it, or is this the task of the proxy? And why is the '230 server data' not reaching the client? CheersFTP Proxy : pwd problem
Hello, Im currently using following code snippet for FTP proxy. https://devcentral.f5.com/codeshare/ftp-proxy-lite when CLIENT_ACCEPTED { TCP::respond "220 Welcome to the F5 FTP Proxy\r\n" log local0. "client accepted" TCP::collect } when CLIENT_DATA { set ftplogin [TCP::payload] if { $ftplogin starts_with "USER" } { set cuser [TCP::payload] scan $cuser {%[^@]@%s} garbage remote_ftp_site_addr scan $garbage %s%s cmd uid TCP::payload replace 0 [string length $cuser ] "USER $uid\r\n" node $remote_ftp_site_addr [TCP::local_port] } TCP::release } ` But it looks like the passwd doesnt get passed when connecting to the ftp server. I get this behavior with WINSCP and Filezilla Answer : 530 Please login with USER and PASS. Server Log: > `Thu Mar 7 10:13:12 2019 [pid 17174] FTP command: Client "::ffff:130.0.0.150", "USER ictst" Thu Mar 7 10:13:12 2019 [pid 17174] [ictst] FTP response: Client "::ffff:130.0.0.150", "331 Please specify the password." Thu Mar 7 10:13:12 2019 [pid 17174] [ictst] FTP command: Client "::ffff:130.0.0.150", "SYST" Thu Mar 7 10:13:12 2019 [pid 17174] [ictst] FTP response: Client "::ffff:130.0.0.150", "530 Please login with USER and PASS." Thu Mar 7 10:13:12 2019 [pid 17174] [ictst] FTP command: Client "::ffff:130.0.0.150", "FEAT" Thu Mar 7 10:13:12 2019 [pid 17174] [ictst] FTP response: Client "::ffff:130.0.0.150", "211-Features:" Thu Mar 7 10:13:12 2019 [pid 17174] [ictst] FTP response: Client "::ffff:130.0.0.150", " EPRT??" Thu Mar 7 10:13:12 2019 [pid 17174] [ictst] FTP response: Client "::ffff:130.0.0.150", " EPSV??" Thu Mar 7 10:13:12 2019 [pid 17174] [ictst] FTP response: Client "::ffff:130.0.0.150", " MDTM??" Thu Mar 7 10:13:12 2019 [pid 17174] [ictst] FTP response: Client "::ffff:130.0.0.150", " PASV??" Thu Mar 7 10:13:12 2019 [pid 17174] [ictst] FTP response: Client "::ffff:130.0.0.150", " REST STREAM??" Thu Mar 7 10:13:12 2019 [pid 17174] [ictst] FTP response: Client "::ffff:130.0.0.150", " SIZE??" Thu Mar 7 10:13:12 2019 [pid 17174] [ictst] FTP response: Client "::ffff:130.0.0.150", " TVFS??" Thu Mar 7 10:13:12 2019 [pid 17174] [ictst] FTP response: Client "::ffff:130.0.0.150", "211 End" Thu Mar 7 10:13:12 2019 [pid 17174] [ictst] FTP command: Client "::ffff:130.0.0.150", "PWD" Thu Mar 7 10:13:12 2019 [pid 17174] [ictst] FTP response: Client "::ffff:130.0.0.150", "530 Please login with USER an The Virtual server has a FTP-Profile on it. Anybody have an idea why this could be the case ? Leander
FTP Error when listing directories:GnuTLS error -15: An unexpected TLS packet was received.
Hello. I'm having issues with a F5 Performance L4 Virtual Server for my vsftp server for ftpes. When I connect directly to my vsftp server from my Filezilla client I get the directory listing. Status:Initializing TLS... Status:Verifying certificate... Status:TLS connection established. Status:Logged in Status:Retrieving directory listing... Status:Directory listing of "/home/xxxxxxx" successful But when I try it through my F5 Virtual Server, I get the following error: Status:Server sent passive reply with unroutable address. Using server address instead. Command:LIST Error:GnuTLS error -15: An unexpected TLS packet was received. Error:The data connection could not be established: ECONNABORTED - Connection aborted Error:Connection timed out after 20 seconds of inactivity Error:Failed to retrieve directory listing The List problem is only with my ftpes. I can get in fine through the F5 virtual server on sftp (port 20). Any help will be appreciated. Thank you, TadashiOpening a Port Range
This may be quite simple for the BIGIP pros but I'm not sure of the best way to do what I need. I have an FTP site in IIS with a data channel port range defined (30000-30300) and the IP address of the external firewall i.e. the TMG listener IP and SSL is required. I also have an HTTPS (443) site bound to the FTP site so the directory can be browsed and HTTPS download links provided. In TMG to access the HTTPS site is a simple web publishing rule and I can replicate this on F5 using the http iApp easily enough. But also currently in TMG I have a server publishing rule that applies from [anywhere] to [ftp server IP] using the listener IP defined for the FTP service on the external network. In addition this rule has a custom protocol with the port ranges opened for both inbound and outbound connections 21, 989-990, 30000-30300. This is to allow me to configure an FTP client (Filezilla) to use FTPES (explicit/passive) for uploads and downloads and works fine. How though so I configure this second part on my F5 LTM?external FTP monitor via explicit FTP proxy
Dear all, I have a couple of forward proxy servers load balanced behind the F5 and we are wondering how to monitor the FTP proxy services, so basically we are looking for a way to send a FTP command via an external explicit FTP proxy just like we do with http curl command for web services (see below). Does someone have a solution to monitor FTP via explicit proxy? curl -k -v ${URI} --proxy ${IP}:${PORT} --http1.1 2>&1 | grep -i "${RECV}"
