22 lines
578 B
Bash
22 lines
578 B
Bash
#!/bin/sh -eux
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SSHD_CONFIG="/etc/ssh/sshd_config"
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# ensure that there is a trailing newline before attempting to concatenate
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# shellcheck disable=SC1003
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sed -i -e '$a\' "$SSHD_CONFIG"
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USEDNS="UseDNS no"
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if grep -q -E "^[[:space:]]*UseDNS" "$SSHD_CONFIG"; then
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sed -i "s/^\s*UseDNS.*/${USEDNS}/" "$SSHD_CONFIG"
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else
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echo "$USEDNS" >>"$SSHD_CONFIG"
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fi
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GSSAPI="GSSAPIAuthentication no"
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if grep -q -E "^[[:space:]]*GSSAPIAuthentication" "$SSHD_CONFIG"; then
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sed -i "s/^\s*GSSAPIAuthentication.*/${GSSAPI}/" "$SSHD_CONFIG"
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else
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echo "$GSSAPI" >>"$SSHD_CONFIG"
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fi
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