At my company we use port forwarding as an alternative to VPN. In previous releases of openssh (pre 6.0) we could run a script and fetch the thousands of forwards to our local machine to connect to remote machines. Since openssh 6.x, whenever we run the same script we get a bufferoverflow error. ---- debug1: channel 4577: new [port listener] debug1: channel 4578: new [client-session] debug1: Requesting no-more-sessions@xxxxxxxxxxx debug1: Entering interactive session. *** buffer overflow detected ***: ssh terminated ======= Backtrace: ========= /lib64/libc.so.6(__fortify_fail+0x37)[0x7f3516baf8f7] /lib64/libc.so.6(+0x10bac0)[0x7f3516badac0] /lib64/libc.so.6(+0x10d867)[0x7f3516baf867] ssh(+0x26825)[0x7f3519304825] ssh(+0x2aece)[0x7f3519308ece] ssh(+0x12d05)[0x7f35192f0d05] ssh(+0xb3ee)[0x7f35192e93ee] /lib64/libc.so.6(__libc_start_main+0xf5)[0x7f3516ac3af5] ssh(+0xc289)[0x7f35192ea289] ---- I assume this is a security measure to thwart overflow attacks. I've tried utilizing multiplexing, but received the same type of buffer overflow. Are there any settings that I can change to allow for more forwards? At the moment we have a work around to only pull back ports in batches but that isn't a long term solution. Any advice would be appreciated. Thanks -Todd Morgan _______________________________________________ openssh-unix-dev mailing list openssh-unix-dev@xxxxxxxxxxx https://lists.mindrot.org/mailman/listinfo/openssh-unix-dev
