# Openssh-sftp-client bug **URL:** \ **Category:** Installing and Using OpenWrt\ **Created:** [October 22, 2022, 8:50pm UTC](https://forum.openwrt.org/t/openssh-sftp-client-bug/140515 "2022-10-22T20:50:01Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![hoarder](https://forum.openwrt.org/letter_avatar/hoarder/32/5_5575768a8748004e209b776fc1b2916d.png) [@hoarder](https://forum.openwrt.org/u/hoarder)\ **Post date:** [October 22, 2022, 8:50pm UTC](https://forum.openwrt.org/t/openssh-sftp-client-bug/140515/1 "2022-10-22T20:50:01Z")
Hello everyone, Linksys EA6350V4 with 22.03.1 here. I have quite a weird bug with sftp client: ![image](https://forum.openwrt.org/uploads/default/original/3X/2/a/2a856237e9fdf1c5adbb4172987c3750baf5032f.png) as you can see from the screen snip, when I log in to the sftp server the console doesn't work properly: - `sftp>` is not there - when I try to `cd Do` into Downloads folder, weird thing happens - I press Enter couple of times and then ctrl+c - shows me all the `sftp>` that were supposed to be there. I tried sftp locally on the sftp server PC and everything worked as expected. Router was rebooted. Edit: `lftp sftp://username@ip-address` works flawlessly though, but it's heavy af. I'd prefer simple sftp-client... ---
**Author:** ![Fiouz](https://forum.openwrt.org/letter_avatar/fiouz/32/5_5575768a8748004e209b776fc1b2916d.png) [@Fiouz](https://forum.openwrt.org/u/Fiouz)\ **Post date:** [October 23, 2022, 12:58am UTC](https://forum.openwrt.org/t/openssh-sftp-client-bug/140515/2 "2022-10-23T00:58:21Z")
Maybe [Ash: /usr/libexec/sftp-server: not found when using scp - #3 by colo](https://forum.openwrt.org/t/ash-usr-libexec-sftp-server-not-found-when-using-scp/125772/3) applies (i.e. use _scp/rcp protocol_ instead of _SFTP protocol_), and lftp has automatic fallback to scp/rcp protocol (increasing lftp logging verbosity might confirm that). ---
**Author:** ![hoarder](https://forum.openwrt.org/letter_avatar/hoarder/32/5_5575768a8748004e209b776fc1b2916d.png) [@hoarder](https://forum.openwrt.org/u/hoarder)\ **Post date:** [October 23, 2022, 7:41pm UTC](https://forum.openwrt.org/t/openssh-sftp-client-bug/140515/3 "2022-10-23T19:41:55Z")
hmmm, maybe you are right, versions are different: ```nohighlight debug1: Local version string SSH-2.0-OpenSSH_8.9 debug1: Remote protocol version 2.0, remote software version OpenSSH_7.6p1 Ubuntu-4ubuntu0.7 debug1: compat_banner: match: OpenSSH_7.6p1 Ubuntu-4ubuntu0.7 pat OpenSSH_7.0*,OpenSSH_7.1*,OpenSSH_7.2*,OpenSSH_7.3*,OpenSSH_7.5*,OpenSSH_7.6*,OpenSSH_7.7* compat 0x04000002 ``` let's see, if it works after update and reboot ---
**Author:** ![hoarder](https://forum.openwrt.org/letter_avatar/hoarder/32/5_5575768a8748004e209b776fc1b2916d.png) [@hoarder](https://forum.openwrt.org/u/hoarder)\ **Post date:** [October 23, 2022, 8:51pm UTC](https://forum.openwrt.org/t/openssh-sftp-client-bug/140515/4 "2022-10-23T20:51:44Z")
here is a verbose of the connection process: ```nohighlight root@OpenWrt:~# sftp -v username@hostname OpenSSH_8.9p1, OpenSSL 1.1.1q 5 Jul 2022 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Connecting to hostname [hostname] port 22. debug1: Connection established. debug1: identity file /root/.ssh/id_rsa type -1 debug1: identity file /root/.ssh/id_rsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa type -1 debug1: identity file /root/.ssh/id_ecdsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa_sk type -1 debug1: identity file /root/.ssh/id_ecdsa_sk-cert type -1 debug1: identity file /root/.ssh/id_ed25519 type -1 debug1: identity file /root/.ssh/id_ed25519-cert type -1 debug1: identity file /root/.ssh/id_ed25519_sk type -1 debug1: identity file /root/.ssh/id_ed25519_sk-cert type -1 debug1: identity file /root/.ssh/id_xmss type -1 debug1: identity file /root/.ssh/id_xmss-cert type -1 debug1: identity file /root/.ssh/id_dsa type -1 debug1: identity file /root/.ssh/id_dsa-cert type -1 debug1: Local version string SSH-2.0-OpenSSH_8.9 debug1: Remote protocol version 2.0, remote software version OpenSSH_7.6p1 Ubuntu-4ubuntu0.7 debug1: compat_banner: match: OpenSSH_7.6p1 Ubuntu-4ubuntu0.7 pat OpenSSH_7.0*,OpenSSH_7.1*,OpenSSH_7.2*,OpenSSH_7.3*,OpenSSH_7.5*,OpenSSH_7.6*,OpenSSH_7.7* compat 0x04000002 debug1: Authenticating to hostname:22 as 'username' debug1: load_hostkeys: fopen /root/.ssh/known_hosts2: No such file or directory debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or directory debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: algorithm: curve25519-sha256 debug1: kex: host key algorithm: ssh-ed25519 debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: compression: none debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: compression: none debug1: expecting SSH2_MSG_KEX_ECDH_REPLY debug1: SSH2_MSG_KEX_ECDH_REPLY received debug1: Server host key: ssh-ed25519 SHA256:ISB2CAxeVVNabHf8l9PNCTKnxUqYQtYbeKd/22bOaXk debug1: load_hostkeys: fopen /root/.ssh/known_hosts2: No such file or directory debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or directory debug1: Host 'hostname' is known and matches the ED25519 host key. debug1: Found key in /root/.ssh/known_hosts:1 debug1: rekey out after 134217728 blocks debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: rekey in after 134217728 blocks debug1: Will attempt key: /root/.ssh/id_rsa debug1: Will attempt key: /root/.ssh/id_ecdsa debug1: Will attempt key: /root/.ssh/id_ecdsa_sk debug1: Will attempt key: /root/.ssh/id_ed25519 debug1: Will attempt key: /root/.ssh/id_ed25519_sk debug1: Will attempt key: /root/.ssh/id_xmss debug1: Will attempt key: /root/.ssh/id_dsa debug1: SSH2_MSG_EXT_INFO received debug1: kex_input_ext_info: server-sig-algs= debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,password debug1: Next authentication method: publickey debug1: Trying private key: /root/.ssh/id_rsa debug1: Trying private key: /root/.ssh/id_ecdsa debug1: Trying private key: /root/.ssh/id_ecdsa_sk debug1: Trying private key: /root/.ssh/id_ed25519 debug1: Trying private key: /root/.ssh/id_ed25519_sk debug1: Trying private key: /root/.ssh/id_xmss debug1: Trying private key: /root/.ssh/id_dsa debug1: Next authentication method: password username@hostname's password: Authenticated to hostname ([hostname]:22) using "password". debug1: channel 0: new [client-session] debug1: Requesting no-more-sessions@openssh.com debug1: Entering interactive session. debug1: pledge: filesystem debug1: client_input_global_request: rtype hostkeys-00@openssh.com want_reply 0 debug1: client_input_hostkeys: searching /root/.ssh/known_hosts for hostname / (none) debug1: client_input_hostkeys: searching /root/.ssh/known_hosts2 for hostname / (none) debug1: client_input_hostkeys: hostkeys file /root/.ssh/known_hosts2 does not exist debug1: Sending subsystem: sftp debug1: client_global_hostkeys_private_confirm: server used untrusted RSA signature algorithm ssh-rsa for key 0, disregarding debug1: update_known_hosts: known hosts file /root/.ssh/known_hosts2 does not exist Connected to hostname. ``` except having different OpenSSH versions, I see no problems. updating openssh on older ubuntu is a bit complicated. Since I have no physical access to the server, I'd prefer to not tinker with ssh config.